Darunavir Ethanolate[CAS:635728-49-3] [(3R, 3aS, 6aR)-Hydroxyhexa hydrofuro [2, 3-è] furanyl Succin[CAS:253265-97-3] HANGZHOU THINK CHEMICAL CO., LTD. (THINKCHEM) is an integrative corporation of trade, research and contract manufac
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inquiryDayangchem's R&D center can offer custom synthesis according to the contract research and development services for the fine chemicals, pharmaceutical, biotechnique and some of the other chemicals. DayangChem can provide different quantities
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inquiryCAS No.: 253265-97-3 Other Names: 253265-97-3 MF: C11H13NO7 EINECS No.: - Place of Origin: Shannxi, China (Mainland) Type: Pharmaceutical Intermediates, Synt
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inquiryCompetitive Price High Quality Fast Delivery custom-made Welcome to Henan Tianfu Chemical Co., Ltd. website. Our company engages in Sodium Tripolyphosphate (STPP) and Sodium Hexametabphosphate (SHMP) production; development of noble me
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inquiryProduct Description Product name Carbonic acid 2,5-dioxo-1-pyrrolidinyl [(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yl] ester CAS number 2
Cas:253265-97-3
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inquiryOur advantages: 1. All inquiries will be replied within 12 hours. 2. Dedication to quality, supply & service. 3. Strictly on selecting raw materials. 4. Reasonable & competitive price, fast lead time. 5. Sample is available for your eva
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inquiry[(3R,3aS,6aR)-Hydroxyhexahydrofuro[2,3-β]furanyl Succinimidyl Carbonate CAS: 253265-97-3 Qingdao Belugas Import and Export Co., Ltd. is a scientific and technological company integrating research and development, production and trade of chemica
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inquiryHello, dear friend! I'm Hansen and Allen from China. Welcome to my lookchem mall! The following is a brief introduction of our company's products and services. If you are interested in our products, please contact us by emai
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inquiryAppearance:white or light yellow crystalline powder Storage:Store in a cool,dry place and keep away from direct strong light Package:As customer request Application:Used for research and industrial manufacture. Transportation:By
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inquiryCompany Introduction 1. Established in 2005, with two independent business divisions: Fine chemicals division; Pharmaceutical division. 2. Main product: Optical brightener Textile auxiliary Dye stuff Pigments
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inquiryWe are supplying below Darunavir Intermediate with good quality and competitive price. (3aS,4S,6aR)-Tetrahydro-4-methoxy-furo[3,4-b]furan-2(3H)-one CAS No 866594-60-7 4-Amino-N-[(2R,3S)-3-amino-2-hydroxy-4-phenylbutyl]-N-(2-methylpropyl)
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inquiryVapor Pressure:2.41E-06mmHg at 25°C Melting Point:122-125℃ Refractive Index:1.562 Boiling Point:391.8 °C at 760 mmHg Flash Point:190.7 °C PSA:91.37000 Density:1.51 g/cm3 LogP:-0.09710 Storage Temp.:2-8°C Solubility
Cas:253265-97-3
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inquiryWe are concentrating on APIs and pharmaceutical intermediates. It is made obtainable from us at the most reasonable rate. Appearance:White powder Storage:Store at +4°C Package:25KG/DRUM Application:Blood lipid regulation, anti - atherosclerosis d
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inquirySuperior quality, moderate price & quick delivery. Appearance:white powder Storage:Stored in cool, dry and ventilation place; Away from fire and heat Package:25kg/drum, or as per your request. Application:Used as Pharmaceutical Intermediates Tr
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inquiryProduct name: 1-({[(3R,3aS,6aR)-Hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl}oxy)pyrrolidine-2,5-dione CAS No.:253265-97-3 Molecule Formula:C11H13NO7 Molecule Weight:271.22 Purity: 98.0% Package: 25kg/drum Description:White to off-white p
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inquiryProduct Details Grade: pharmaceutical grade Purity:99%+ ProductionCapacity: 1000 Kilogram/Month Scope of use: For scientific research only(The product must be used legally) Our Advantage 1. Best quality with competitive price. 2. Quick shipping,
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inquiry1-hydroxy-pyrrolidine-2,5-dione
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
With triethylamine In tetrahydrofuran for 2h; Reflux; | 99.6% |
di(succinimido) carbonate
(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-ol
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
With pyridine In tert-butyl methyl ether at 25 - 40℃; for 62h; Solvent; | 90% |
With triethylamine In acetonitrile at 23℃; for 7h; | 66% |
With triethylamine In dichloromethane Solvent; Reagent/catalyst; Inert atmosphere; Reflux; Large scale; | 62% |
γ-benzyloxymethyl-α,β-butenolide
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
Multi-step reaction with 7 steps 1: benzophenone / 9 h / 0 °C / UV-irradiation 2: 89 percent / H2 / Pd/C / methanol / 24 h / 23 °C 3: LiAlH4 / tetrahydrofuran / 4 h / 0 °C 4: 145 mg / HCl / tetrahydrofuran; H2O / 40 h / 23 °C / pH 2 - 3 5: triphenylphosphine; diisopropyl azodicarboxylate / benzene / 1.5 h / 23 °C 6: 326 mg / LiOH; Et3N / methanol; H2O / 2 h / 23 °C 7: 66 percent / Et3N / acetonitrile / 7 h / 23 °C View Scheme | |
Multi-step reaction with 7 steps 1: benzophenone / 9 h / 0 °C / UV-irradiation 2: 89 percent / H2 / Pd/C / methanol / 24 h / 23 °C 3: LiAlH4 / tetrahydrofuran / 4 h / 0 °C 4: 145 mg / HCl / tetrahydrofuran; H2O / 40 h / 23 °C / pH 2 - 3 5: 94 percent / 4-methylmorpholino-N-oxide; tetrapropylammonium perruthenate / CH2Cl2 / 0.17 h / 23 °C 6: 70 percent / NaBH4 / ethanol / 2.5 h / -18 °C 7: 66 percent / Et3N / acetonitrile / 7 h / 23 °C View Scheme |
(5S)-5-(hydroxymethyl)-5H-furan-2-one
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
Multi-step reaction with 6 steps 1: benzophenone / 4 h / 0 °C / UV-irradiation 2: LiAlH4 / tetrahydrofuran / 4 h / 0 °C 3: 145 mg / HCl / tetrahydrofuran; H2O / 40 h / 23 °C / pH 2 - 3 4: triphenylphosphine; diisopropyl azodicarboxylate / benzene / 1.5 h / 23 °C 5: 326 mg / LiOH; Et3N / methanol; H2O / 2 h / 23 °C 6: 66 percent / Et3N / acetonitrile / 7 h / 23 °C View Scheme | |
Multi-step reaction with 6 steps 1: benzophenone / 4 h / 0 °C / UV-irradiation 2: LiAlH4 / tetrahydrofuran / 4 h / 0 °C 3: 145 mg / HCl / tetrahydrofuran; H2O / 40 h / 23 °C / pH 2 - 3 4: 94 percent / 4-methylmorpholino-N-oxide; tetrapropylammonium perruthenate / CH2Cl2 / 0.17 h / 23 °C 5: 70 percent / NaBH4 / ethanol / 2.5 h / -18 °C 6: 66 percent / Et3N / acetonitrile / 7 h / 23 °C View Scheme |
methyl (2Z)-3-[(4S)-2,2-dimethyl-1,3-dioxolan-4-yl]acrylate
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
Multi-step reaction with 7 steps 1: 97 percent / H2SO4 / methanol / 2 h / 23 °C 2: benzophenone / 4 h / 0 °C / UV-irradiation 3: LiAlH4 / tetrahydrofuran / 4 h / 0 °C 4: 145 mg / HCl / tetrahydrofuran; H2O / 40 h / 23 °C / pH 2 - 3 5: triphenylphosphine; diisopropyl azodicarboxylate / benzene / 1.5 h / 23 °C 6: 326 mg / LiOH; Et3N / methanol; H2O / 2 h / 23 °C 7: 66 percent / Et3N / acetonitrile / 7 h / 23 °C View Scheme | |
Multi-step reaction with 7 steps 1: 97 percent / H2SO4 / methanol / 2 h / 23 °C 2: benzophenone / 4 h / 0 °C / UV-irradiation 3: LiAlH4 / tetrahydrofuran / 4 h / 0 °C 4: 145 mg / HCl / tetrahydrofuran; H2O / 40 h / 23 °C / pH 2 - 3 5: 94 percent / 4-methylmorpholino-N-oxide; tetrapropylammonium perruthenate / CH2Cl2 / 0.17 h / 23 °C 6: 70 percent / NaBH4 / ethanol / 2.5 h / -18 °C 7: 66 percent / Et3N / acetonitrile / 7 h / 23 °C View Scheme |
(4S,5S)-4-(1,3-dioxolan-2-yl)-5-hydroxymethyldihydrofuran-2-one
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
Multi-step reaction with 5 steps 1: LiAlH4 / tetrahydrofuran / 4 h / 0 °C 2: 145 mg / HCl / tetrahydrofuran; H2O / 40 h / 23 °C / pH 2 - 3 3: triphenylphosphine; diisopropyl azodicarboxylate / benzene / 1.5 h / 23 °C 4: 326 mg / LiOH; Et3N / methanol; H2O / 2 h / 23 °C 5: 66 percent / Et3N / acetonitrile / 7 h / 23 °C View Scheme | |
Multi-step reaction with 5 steps 1: LiAlH4 / tetrahydrofuran / 4 h / 0 °C 2: 145 mg / HCl / tetrahydrofuran; H2O / 40 h / 23 °C / pH 2 - 3 3: 94 percent / 4-methylmorpholino-N-oxide; tetrapropylammonium perruthenate / CH2Cl2 / 0.17 h / 23 °C 4: 70 percent / NaBH4 / ethanol / 2.5 h / -18 °C 5: 66 percent / Et3N / acetonitrile / 7 h / 23 °C View Scheme |
(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yl 4-nitrophenyl carbonate
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 326 mg / LiOH; Et3N / methanol; H2O / 2 h / 23 °C 2: 66 percent / Et3N / acetonitrile / 7 h / 23 °C View Scheme |
(3aR,6aR)-3a,4,5,6a-tetrahydrofuro[2,3-b]furan-3(2H)-one
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 70 percent / NaBH4 / ethanol / 2.5 h / -18 °C 2: 66 percent / Et3N / acetonitrile / 7 h / 23 °C View Scheme |
(3S,3aS,6aR)-3-hydroxyhexahydrofuro[2,3-b]furan
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: triphenylphosphine; diisopropyl azodicarboxylate / benzene / 1.5 h / 23 °C 2: 326 mg / LiOH; Et3N / methanol; H2O / 2 h / 23 °C 3: 66 percent / Et3N / acetonitrile / 7 h / 23 °C View Scheme | |
Multi-step reaction with 3 steps 1: 94 percent / 4-methylmorpholino-N-oxide; tetrapropylammonium perruthenate / CH2Cl2 / 0.17 h / 23 °C 2: 70 percent / NaBH4 / ethanol / 2.5 h / -18 °C 3: 66 percent / Et3N / acetonitrile / 7 h / 23 °C View Scheme |
(S)-1-(benzyloxy)but-3-en-2-yl acrylate
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
Multi-step reaction with 8 steps 1: 98 percent / second generation Grubb's catalyst / CH2Cl2 / 5 h / Heating 2: benzophenone / 9 h / 0 °C / UV-irradiation 3: 89 percent / H2 / Pd/C / methanol / 24 h / 23 °C 4: LiAlH4 / tetrahydrofuran / 4 h / 0 °C 5: 145 mg / HCl / tetrahydrofuran; H2O / 40 h / 23 °C / pH 2 - 3 6: triphenylphosphine; diisopropyl azodicarboxylate / benzene / 1.5 h / 23 °C 7: 326 mg / LiOH; Et3N / methanol; H2O / 2 h / 23 °C 8: 66 percent / Et3N / acetonitrile / 7 h / 23 °C View Scheme | |
Multi-step reaction with 8 steps 1: 98 percent / second generation Grubb's catalyst / CH2Cl2 / 5 h / Heating 2: benzophenone / 9 h / 0 °C / UV-irradiation 3: 89 percent / H2 / Pd/C / methanol / 24 h / 23 °C 4: LiAlH4 / tetrahydrofuran / 4 h / 0 °C 5: 145 mg / HCl / tetrahydrofuran; H2O / 40 h / 23 °C / pH 2 - 3 6: 94 percent / 4-methylmorpholino-N-oxide; tetrapropylammonium perruthenate / CH2Cl2 / 0.17 h / 23 °C 7: 70 percent / NaBH4 / ethanol / 2.5 h / -18 °C 8: 66 percent / Et3N / acetonitrile / 7 h / 23 °C View Scheme |
(2S,53)-3-(1,3-dioxolan-2-yl)pentane-1,2,5-triol
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1: 145 mg / HCl / tetrahydrofuran; H2O / 40 h / 23 °C / pH 2 - 3 2: triphenylphosphine; diisopropyl azodicarboxylate / benzene / 1.5 h / 23 °C 3: 326 mg / LiOH; Et3N / methanol; H2O / 2 h / 23 °C 4: 66 percent / Et3N / acetonitrile / 7 h / 23 °C View Scheme | |
Multi-step reaction with 4 steps 1: 145 mg / HCl / tetrahydrofuran; H2O / 40 h / 23 °C / pH 2 - 3 2: 94 percent / 4-methylmorpholino-N-oxide; tetrapropylammonium perruthenate / CH2Cl2 / 0.17 h / 23 °C 3: 70 percent / NaBH4 / ethanol / 2.5 h / -18 °C 4: 66 percent / Et3N / acetonitrile / 7 h / 23 °C View Scheme |
(4S,5S)-5-(benzyloxymethyl)-4-(1,3-dioxolan-2-yl)dihydrofuran-2-one
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
Multi-step reaction with 6 steps 1: 89 percent / H2 / Pd/C / methanol / 24 h / 23 °C 2: LiAlH4 / tetrahydrofuran / 4 h / 0 °C 3: 145 mg / HCl / tetrahydrofuran; H2O / 40 h / 23 °C / pH 2 - 3 4: triphenylphosphine; diisopropyl azodicarboxylate / benzene / 1.5 h / 23 °C 5: 326 mg / LiOH; Et3N / methanol; H2O / 2 h / 23 °C 6: 66 percent / Et3N / acetonitrile / 7 h / 23 °C View Scheme | |
Multi-step reaction with 6 steps 1: 89 percent / H2 / Pd/C / methanol / 24 h / 23 °C 2: LiAlH4 / tetrahydrofuran / 4 h / 0 °C 3: 145 mg / HCl / tetrahydrofuran; H2O / 40 h / 23 °C / pH 2 - 3 4: 94 percent / 4-methylmorpholino-N-oxide; tetrapropylammonium perruthenate / CH2Cl2 / 0.17 h / 23 °C 5: 70 percent / NaBH4 / ethanol / 2.5 h / -18 °C 6: 66 percent / Et3N / acetonitrile / 7 h / 23 °C View Scheme |
vinyl acetate
di(succinimido) carbonate
(3aS,6aR)-hexahydrofuro[2,3-b]furan-3-ol
A
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
Stage #1: vinyl acetate; (3aS,6aR)-hexahydrofuro[2,3-b]furan-3-ol In dichloromethane; tert-butyl methyl ether at 20℃; for 5h; Resolution of racemate; Large scale reaction; Enzymatic reaction; Stage #2: di(succinimido) carbonate With triethylamine In acetonitrile at 20℃; for 24h; enantioselective reaction; | A 5.1 g B n/a |
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1.1: hydrogenchloride / water / 20 h / 2 - 5 °C 1.2: 1 h 2.1: triethylamine / acetonitrile / 5 h / 20 °C / Inert atmosphere View Scheme |
di(succinimido) carbonate
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
With triethylamine In acetonitrile at 24 - 45℃; for 1h; |
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: Lipase PS / 24 h / 50 °C / Enzymatic reaction 2: triethylamine / acetonitrile / 24 h / 20 °C / Inert atmosphere View Scheme | |
Multi-step reaction with 2 steps 1: lipase AS / 24 h / 50 °C / Enzymatic reaction 2: triethylamine / acetonitrile / 24 h / 20 °C / Inert atmosphere View Scheme |
(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-ol
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: triethylamine / dichloromethane / 3 h / 50 °C 2: triethylamine / tetrahydrofuran / 2 h / Reflux View Scheme |
hexahydrofuro[2,3-b]furan-3-ol
di(succinimido) carbonate
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
With pyridine In toluene at 40℃; for 9h; | 71.9 g |
ethyl (E)-3-[(R)-2,2-dimethyl-1,3-dioxolan-4-yl]acrylate
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1.1: 1,8-diazabicyclo[5.4.0]undec-7-ene / acetonitrile / 25 h / 0 - 30 °C 2.1: sodium tetrahydroborate; lithium bromide / tetrahydrofuran / 35 h / 0 - 30 °C 2.2: 0.33 h / 25 - 30 °C / Inert atmosphere 2.3: 5 h / 0 - 30 °C / Inert atmosphere 3.1: pyridine / dichloromethane / 17 h / 40 - 45 °C View Scheme | |
Multi-step reaction with 4 steps 1: 1,8-diazabicyclo[5.4.0]undec-7-ene / acetonitrile / 25 h / 0 - 30 °C 2: lithium bromide; lithium borohydride / tetrahydrofuran / 18 h / 0 - 30 °C / Inert atmosphere 3: sulfuric acid; sodium hydroxide / water / 2 h / 5 - 30 °C 4: pyridine / dichloromethane / 17 h / 40 - 45 °C View Scheme | |
Multi-step reaction with 5 steps 1.1: 1,8-diazabicyclo[5.4.0]undec-7-ene / acetonitrile / 25 h / 0 - 30 °C 2.1: methanol; hydrogenchloride / 3 h / 25 - 30 °C 3.1: sodium tetrahydroborate; methanol / tetrahydrofuran / 3 h / 65 - 70 °C 4.1: potassium tert-butylate / methanol / 0.17 h / 25 - 30 °C 4.2: 3 h / 0 - 30 °C 5.1: pyridine / dichloromethane / 17 h / 40 - 45 °C View Scheme |
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1.1: sodium tetrahydroborate; lithium bromide / tetrahydrofuran / 35 h / 0 - 30 °C 1.2: 0.33 h / 25 - 30 °C / Inert atmosphere 1.3: 5 h / 0 - 30 °C / Inert atmosphere 2.1: pyridine / dichloromethane / 17 h / 40 - 45 °C View Scheme | |
Multi-step reaction with 3 steps 1: lithium bromide; lithium borohydride / tetrahydrofuran / 18 h / 0 - 30 °C / Inert atmosphere 2: sulfuric acid; sodium hydroxide / water / 2 h / 5 - 30 °C 3: pyridine / dichloromethane / 17 h / 40 - 45 °C View Scheme | |
Multi-step reaction with 4 steps 1.1: methanol; hydrogenchloride / 3 h / 25 - 30 °C 2.1: sodium tetrahydroborate; methanol / tetrahydrofuran / 3 h / 65 - 70 °C 3.1: potassium tert-butylate / methanol / 0.17 h / 25 - 30 °C 3.2: 3 h / 0 - 30 °C 4.1: pyridine / dichloromethane / 17 h / 40 - 45 °C View Scheme |
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1.1: sodium tetrahydroborate; methanol / tetrahydrofuran / 3 h / 65 - 70 °C 2.1: potassium tert-butylate / methanol / 0.17 h / 25 - 30 °C 2.2: 3 h / 0 - 30 °C 3.1: pyridine / dichloromethane / 17 h / 40 - 45 °C View Scheme |
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1.1: potassium tert-butylate / methanol / 0.17 h / 25 - 30 °C 1.2: 3 h / 0 - 30 °C 2.1: pyridine / dichloromethane / 17 h / 40 - 45 °C View Scheme |
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: sulfuric acid; sodium hydroxide / water / 2 h / 5 - 30 °C 2: pyridine / dichloromethane / 17 h / 40 - 45 °C View Scheme |
ethyl 2-((3aR,5S,6R,6aR)-5-((R)-1,2-dihydroxyethyl)-2,2-dimethyltetrahydrofuro[2,3-d][1,3]dioxol-6-yl)acetate
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
Multi-step reaction with 10 steps 1.1: sodium periodate / methanol / 2 h / 0 - 23 °C 2.1: sodium tetrahydroborate / methanol / 1 h / 0 °C 3.1: triethylamine / dichloromethane / 18 h / 0 - 23 °C / Inert atmosphere 4.1: boron trifluoride diethyl etherate / dichloromethane / 0.08 h / -78 °C 4.2: 6 h / -78 - 23 °C 5.1: potassium carbonate / methanol / 0.25 h / 0 °C 6.1: disodium hydrogenphosphate; Dess-Martin periodane / dichloromethane / 3 h / 0 - 23 °C 7.1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 2 h / 0 °C 8.1: hydrogenchloride / methanol / 12 h / 0 - 23 °C 9.1: lithium aluminium tetrahydride / tetrahydrofuran / 1 h / -78 - 23 °C / Inert atmosphere 9.2: 1.5 h / 0 °C 9.3: 1 h / 0 - 23 °C 10.1: triethylamine / acetonitrile / 16 h / 23 °C / Inert atmosphere View Scheme |
ethyl 2-[(3aR,5S,6R,6aR)-5-(hydroxymethyl)-2,2-dimethyltetrahydrofuro[2,3-d][1,3]dioxol-6-yl]acetate
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
Multi-step reaction with 8 steps 1.1: triethylamine / dichloromethane / 18 h / 0 - 23 °C / Inert atmosphere 2.1: boron trifluoride diethyl etherate / dichloromethane / 0.08 h / -78 °C 2.2: 6 h / -78 - 23 °C 3.1: potassium carbonate / methanol / 0.25 h / 0 °C 4.1: disodium hydrogenphosphate; Dess-Martin periodane / dichloromethane / 3 h / 0 - 23 °C 5.1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 2 h / 0 °C 6.1: hydrogenchloride / methanol / 12 h / 0 - 23 °C 7.1: lithium aluminium tetrahydride / tetrahydrofuran / 1 h / -78 - 23 °C / Inert atmosphere 7.2: 1.5 h / 0 °C 7.3: 1 h / 0 - 23 °C 8.1: triethylamine / acetonitrile / 16 h / 23 °C / Inert atmosphere View Scheme |
(3aS,4S,6aR)-2-Oxo-hexahydro-furo[3,4-b]furan-4-carbaldehyde
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1.1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 2 h / 0 °C 2.1: hydrogenchloride / methanol / 12 h / 0 - 23 °C 3.1: lithium aluminium tetrahydride / tetrahydrofuran / 1 h / -78 - 23 °C / Inert atmosphere 3.2: 1.5 h / 0 °C 3.3: 1 h / 0 - 23 °C 4.1: triethylamine / acetonitrile / 16 h / 23 °C / Inert atmosphere View Scheme |
(Z)-ethyl 2-((3aR,5S,6aR)-5-((R)-2,2-dimethyl-1,3-dioxolan-4-yl)-2,2-dimethylfuro[2,3-d][1,3]dioxol-6(3aH,5H,6aH)-ylidene)acetate
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
Multi-step reaction with 8 steps 1.1: water; acetic acid / 60 h / 23 °C 2.1: boron trifluoride diethyl etherate / dichloromethane / 0.08 h / -78 °C 2.2: 6 h / -78 - 23 °C 3.1: potassium carbonate / methanol / 0.25 h / 0 °C 4.1: disodium hydrogenphosphate; Dess-Martin periodane / dichloromethane / 3 h / 0 - 23 °C 5.1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 2 h / 0 °C 6.1: hydrogenchloride / methanol / 12 h / 0 - 23 °C 7.1: lithium aluminium tetrahydride / tetrahydrofuran / 1 h / -78 - 23 °C / Inert atmosphere 7.2: 1.5 h / 0 °C 7.3: 1 h / 0 - 23 °C 8.1: triethylamine / acetonitrile / 16 h / 23 °C / Inert atmosphere View Scheme |
(Z)-ethyl 2-((3aR,5S,6aR)-5-((R)-1,2-dihydroxyethyl)-2,2-dimethyltetrahydrofuro[2,3-d][1,3]dioxol-6-ylidene)acetate
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
Multi-step reaction with 11 steps 1.1: palladium 10% on activated carbon; hydrogen / ethanol / 24 h / 760.05 Torr 2.1: sodium periodate / methanol / 2 h / 0 - 23 °C 3.1: sodium tetrahydroborate / methanol / 1 h / 0 °C 4.1: triethylamine / dichloromethane / 18 h / 0 - 23 °C / Inert atmosphere 5.1: boron trifluoride diethyl etherate / dichloromethane / 0.08 h / -78 °C 5.2: 6 h / -78 - 23 °C 6.1: potassium carbonate / methanol / 0.25 h / 0 °C 7.1: disodium hydrogenphosphate; Dess-Martin periodane / dichloromethane / 3 h / 0 - 23 °C 8.1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 2 h / 0 °C 9.1: hydrogenchloride / methanol / 12 h / 0 - 23 °C 10.1: lithium aluminium tetrahydride / tetrahydrofuran / 1 h / -78 - 23 °C / Inert atmosphere 10.2: 1.5 h / 0 °C 10.3: 1 h / 0 - 23 °C 11.1: triethylamine / acetonitrile / 16 h / 23 °C / Inert atmosphere View Scheme |
3-deoxy-3-(2-ethoxy-2-oxoethyl)-1,2-O-isopropylidene-α-D-ribo-pentodialdo-1,4-furanose
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
Multi-step reaction with 9 steps 1.1: sodium tetrahydroborate / methanol / 1 h / 0 °C 2.1: triethylamine / dichloromethane / 18 h / 0 - 23 °C / Inert atmosphere 3.1: boron trifluoride diethyl etherate / dichloromethane / 0.08 h / -78 °C 3.2: 6 h / -78 - 23 °C 4.1: potassium carbonate / methanol / 0.25 h / 0 °C 5.1: disodium hydrogenphosphate; Dess-Martin periodane / dichloromethane / 3 h / 0 - 23 °C 6.1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 2 h / 0 °C 7.1: hydrogenchloride / methanol / 12 h / 0 - 23 °C 8.1: lithium aluminium tetrahydride / tetrahydrofuran / 1 h / -78 - 23 °C / Inert atmosphere 8.2: 1.5 h / 0 °C 8.3: 1 h / 0 - 23 °C 9.1: triethylamine / acetonitrile / 16 h / 23 °C / Inert atmosphere View Scheme |
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
Multi-step reaction with 8 steps 1.1: palladium 10% on activated carbon; hydrogen / ethanol / 6 h / 23 °C 2.1: boron trifluoride diethyl etherate / dichloromethane / 0.08 h / -78 °C 2.2: 6 h / -78 - 23 °C 3.1: potassium carbonate / methanol / 0.25 h / 0 °C 4.1: disodium hydrogenphosphate; Dess-Martin periodane / dichloromethane / 3 h / 0 - 23 °C 5.1: 3-chloro-benzenecarboperoxoic acid / dichloromethane / 2 h / 0 °C 6.1: hydrogenchloride / methanol / 12 h / 0 - 23 °C 7.1: lithium aluminium tetrahydride / tetrahydrofuran / 1 h / -78 - 23 °C / Inert atmosphere 7.2: 1.5 h / 0 °C 7.3: 1 h / 0 - 23 °C 8.1: triethylamine / acetonitrile / 16 h / 23 °C / Inert atmosphere View Scheme |
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
(2S,3S,5S)-2-(N,N-dibenzylamino)-3-hydroxy-5-amino-1,6-diphenylhexane
Conditions | Yield |
---|---|
With N-ethyl-N,N-diisopropylamine In acetonitrile at 0 - 20℃; for 24h; | 100% |
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
N-(3S-amino-2R-hydroxy-4-phenylbutyl)-N-isobutyl-4-nitro-benzenesulfonamide hydrochloride
Conditions | Yield |
---|---|
In tetrahydrofuran at 30℃; for 6h; | 98.9% |
With triethylamine In dichloromethane at 20℃; for 24h; Inert atmosphere; | 95% |
With triethylamine In dichloromethane |
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
[(2R,3S)-3-[[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yl]oxy]carbonyl]amino]-2-hydroxy-4-phenylbutyl](2-methylpropyl)carbamic acid phenylmethyl ester
Conditions | Yield |
---|---|
With triethylamine In dichloromethane at 20℃; for 24h; | 96.4% |
With N-ethyl-N,N-diisopropylamine In dichloromethane | |
With N-ethyl-N,N-diisopropylamine In dichloromethane for 0.5h; Inert atmosphere; | 5.8 g |
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
[(2R,3S)-3-[[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yl]oxy]carbonyl]amino]-2-hydroxy-4-phenylbutyl](2-methylpropyl)carbamic acid phenylmethyl ester
Conditions | Yield |
---|---|
Stage #1: 1-benzyl-3-(benzyloxycarbonyl-isobutyl-amino)-2-hydroxy-propyl-ammonium chloride; 1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione With triethylamine In dichloromethane at 20℃; for 24h; Stage #2: With sodium hydrogencarbonate In dichloromethane; water | 96.4% |
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
4-amino-N-(2R,3S)(3-amino-2-hydroxy-4-phenylbutyl)-N-isobutylbenzenesulfonamide
Conditions | Yield |
---|---|
In dimethyl sulfoxide at 15 - 30℃; Solvent; | 94% |
With triethylamine In dichloromethane at 20℃; | 90% |
With potassium carbonate In Isopropyl acetate; water at 15 - 35℃; for 4h; | 83.33% |
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
tert-butyl (1S,2R)-1-benzyl-2-hydroxy-3-{isobutyl[(4-methoxyphenyl)sulfonyl]amino}propylcarbamate
{(1S,2R)-1-Benzyl-2-hydroxy-3-[isobutyl-(4-methoxy-benzenesulfonyl)-amino]-propyl}-carbamic acid (3R,3aS,6aR)-(hexahydro-furo[2,3-b]furan-3-yl) ester
Conditions | Yield |
---|---|
Stage #1: tert-butyl (1S,2R)-1-benzyl-2-hydroxy-3-{isobutyl[(4-methoxyphenyl)sulfonyl]amino}propylcarbamate With trifluoroacetic acid In dichloromethane at 23℃; for 0.666667h; Stage #2: 1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione With triethylamine In dichloromethane at 23℃; for 3h; | 90% |
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
With triethylamine In dichloromethane at 20℃; for 17h; | 89% |
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
3-S-(N-tert-butyloxyformamido)-[2R-hydroxy-1-[(4-aminophenylsulfonyl)(2-methylpropyl)]amino]-4-phenylbutane
Conditions | Yield |
---|---|
Stage #1: 3-S-(N-tert-butyloxyformamido)-[2R-hydroxy-1-[(4-aminophenylsulfonyl)(2-methylpropyl)]amino]-4-phenylbutane With trifluoroacetic acid In dichloromethane at 23℃; for 0.666667h; Stage #2: 1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione With triethylamine In dichloromethane at 23℃; for 3h; | 89% |
N-[(1S,2R)-3-[[(benzo-[1,3]-dioxole-5-sulfonyl)](isobutyl)amino]-1-benzyl-2-hydroxypropyl]carbamic acid tert-butyl ester
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
Stage #1: N-[(1S,2R)-3-[[(benzo-[1,3]-dioxole-5-sulfonyl)](isobutyl)amino]-1-benzyl-2-hydroxypropyl]carbamic acid tert-butyl ester With trifluoroacetic acid In dichloromethane at 20℃; for 1h; Stage #2: 1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione With triethylamine In acetonitrile at 20℃; for 4h; Further stages.; | 82% |
Stage #1: N-[(1S,2R)-3-[[(benzo-[1,3]-dioxole-5-sulfonyl)](isobutyl)amino]-1-benzyl-2-hydroxypropyl]carbamic acid tert-butyl ester With trifluoroacetic acid In dichloromethane at 20℃; for 1h; Stage #2: 1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione With triethylamine In acetonitrile at 20℃; for 4h; | 82% |
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
Stage #1: C31H47BN2O7S With hydrogenchloride In 1,4-dioxane for 4h; Stage #2: 1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione With triethylamine In dichloromethane at 20℃; Inert atmosphere; | 82% |
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
Stage #1: C30H45BN2O7S With hydrogenchloride In 1,4-dioxane at 22℃; under 760.051 Torr; for 4h; Inert atmosphere; Stage #2: 1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione With triethylamine In dichloromethane at 22℃; under 760.051 Torr; for 16h; Inert atmosphere; | 82% |
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
With triethylamine In acetonitrile at 20℃; for 48h; | 80% |
2-Dimethylamino-benzothiazole-6-sulfonic acid ((2R,3S)-3-amino-2-hydroxy-4-phenyl-butyl)-isobutyl-amide
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
With triethylamine In dichloromethane at 20℃; for 3h; | 78% |
2-(2-Pyrrolidin-1-yl-ethylamino)-benzothiazole-6-sulfonic acid ((2R,3S)-3-amino-2-hydroxy-4-phenyl-butyl)-isobutyl-amide
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
With triethylamine In dichloromethane at 20℃; for 3h; | 76% |
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
With triethylamine In water; ethyl acetate at 25 - 35℃; | 73.19% |
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
With triethylamine In dichloromethane at 20℃; for 3h; | 73% |
C35H38ClFN4O4
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
C42H46ClFN4O8
Conditions | Yield |
---|---|
In N,N-dimethyl-formamide at 20℃; for 1h; | 73% |
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
{(1S,2R)-[1-(4-formyl-benzyl)]-(2R)-2-hydroxy-3-[N-isobutyl-(N-4-methoxy-benzenesulfonyl)-amino]-propyl}-carbamic acid [3R,3aS,6aR]-hexahydrofuro[2,3-b]furan-3-yl ester
Conditions | Yield |
---|---|
Stage #1: C27H38N2O7S With methanesulfonic acid In tetrahydrofuran at 40℃; Stage #2: 1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione With 1-methyl-1H-imidazole In tetrahydrofuran at 50℃; Product distribution / selectivity; | 70% |
2-(2-Dimethylamino-ethylamino)-benzooxazole-6-sulfonic acid ((2R,3S)-3-amino-2-hydroxy-4-phenyl-butyl)-isobutyl-amide
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
With triethylamine In dichloromethane at 20℃; for 3h; | 67% |
C32H41N3O7S2
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
Stage #1: C32H41N3O7S2 With hydrogenchloride In 1,4-dioxane at 20℃; for 0.333333h; Stage #2: With N-ethyl-N,N-diisopropylamine In dichloromethane Stage #3: 1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione With N-ethyl-N,N-diisopropylamine | 67% |
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
With triethylamine In dichloromethane at 20℃; for 3h; | 66% |
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
With triethylamine In dichloromethane at 20℃; for 3h; | 64% |
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
With triethylamine In acetonitrile at 20℃; for 40h; | 62% |
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
With triethylamine In dichloromethane at 20℃; for 4h; | 60% |
2-(2-Dimethylamino-ethylamino)-benzothiazole-6-sulfonic acid ((2R,3S)-3-amino-2-hydroxy-4-phenyl-butyl)-isobutyl-amide
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
With triethylamine In dichloromethane at 20℃; for 3h; | 59% |
C24H33N3O2S
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
C31H41N3O6S
Conditions | Yield |
---|---|
With triethylamine In dichloromethane | 59% |
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
With triethylamine In acetonitrile at 20℃; for 48h; | 59% |
1-[[[(3R,3aS,6aR)-hexahydrofuro[2,3-b]furan-3-yloxy]carbonyl]oxy]pyrrolidine-2,5-dione
Conditions | Yield |
---|---|
With triethylamine In acetonitrile at 20℃; for 58h; | 58% |
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