Dayangchem'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
Cas:68858-20-8
Min.Order:1 Kilogram
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Type:Lab/Research institutions
inquiryGL Biochem (Shanghai) Ltd. founded in 1998, has become an internationally recognized biochemical manufacturing company that specializes in producing/synthesizing and providing peptide reagents, custom peptides and antibodies. GL Biochem is
Cas:68858-20-8
Min.Order:5 Gram
FOB Price: $1.0 / 1.5
Type:Manufacturers
inquiryWelcome to Simagchem, your partner in China as a premier supply of bulk specialty chemicals for industry and life science. We introduce experienced quality product and exceptional JIT service with instant market intelligence in China to benefit our
Cas:68858-20-8
Min.Order:1 Kilogram
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Type:Manufacturers
inquiryUnique advantages Guaranteed purity High quality & competitive price Quality control Fast feedback Prompt shipment Appearance:White powder Storage:cool dry place Package:1kg/foil bag;25kg/drum Application:biochemical Transportation:by cour
Cas:68858-20-8
Min.Order:1 Kilogram
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Type:Trading Company
inquiryHebei yanxi chemical co. LTD. has expanded a compositive entity from initially only as a small manufacturer. The company dedicated to the development, production and marketing of chemicals. After many years of efforts, we have established stable
Cas:68858-20-8
Min.Order:1 Metric Ton
FOB Price: $1.0 / 2.0
Type:Manufacturers
inquiryThe above product is Ality Chemical's strong item with best price, good quality and fast supply. Ality Chemical has been focusing on the research and production of this field for over 14 years. At the same time, we are always committed to providi
Sichuan Tongsheng is the most strongest manufacturer and exporter of amino acids and their derivatives in China, we guarantee high quality, competive price and reliable service. We fully compliance with ISO9001:2008, production and quality manage
Our main production base is located in Xuzhou industry park. We are certified both to the ISO 9001 and ISO 14001 Standards, have a safety management system in place.Our R&D team masters core technology for process-design of target building block
Cas:68858-20-8
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Type:Manufacturers
inquiryName:FMOC-L-Valine CAS NO:68858-20-8 Grade:Medical scientific research and export Molecular formula:C20H21NO4 Molecular weight:339.39 Product Quality 12 years of chemical raw materials Mature operation of the industry System stability Dat
Cas:68858-20-8
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Type:Other
inquiryProduct Name: FMOC-L-Valine Synonyms: N-FMOC-VAL-OH;N-FMOC-L-VAL;N-FMOC-L-VALINE;N-(9-FLUORENYLMETHOXYCARBONYL)-L-VALINE;N-9-FLUORENYLMETHYLOXYCARBONYL-L-VALINE;N-[(9H-FLUOREN-9-YLMETHOXY)CARBONYL]-L-VALINE;N-ALPHA-(9-FLUORENY
Cas:68858-20-8
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Type:Lab/Research institutions
inquiryDensity: 1.2270 (rough estimate) Melting point: 143-145 ° C (lit.) Boiling point: 475.36 ° C (rough estimate) Specific rotation: -16 º (c=1, DMF) Flash point: 287.5 ° C Steam pressure: 5.19E-13mmHg at 25 ° C Solubility in methano
Cas:68858-20-8
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FOB Price: $15.0 / 50.0
Type:Trading Company
inquiryOur company was built in 2009 with an ISO certificate.In the past 5 years, we have grown up as a famous fine chemicals supplier in China and we had established stable business relationships with Samsung,LG,Merck,Thermo Fisher Scientific and so on.O
WITH US,YOUR MONEY IN SAFE,YOUR BUSINESS IN SAFE 1)Quick Response Within 12 hours; 2)Quality Guarantee: All products are strictly tested by our QC, confirmed by QA and approved by third party lab in China, USA, Canada, Germany, UK, Italy, France et
Cas:68858-20-8
Min.Order:10 Gram
FOB Price: $146.0 / 176.0
Type:Trading Company
inquiry1. Product advantages ♦ High purity, all above 98.5%, no impurities after dissolution ♦ We will test each batch to ensure quality ♦ OEM and private brand services designed for free ♦ Various cap colors available ♦ W
Cas:68858-20-8
Min.Order:1 Kilogram
FOB Price: $10.0 / 30.0
Type:Trading Company
inquiryOur Advantage: high quality with competitive price High quality standard: BP/USP/EP Enterprise standard All purity customized Fast and safe delivery We have reliable forwarder who can help us deliver our goods more fast and safe. We
Cas:68858-20-8
Min.Order:10 Kilogram
Negotiable
Type:Trading Company
inquiryProduct name N-alpha-FMOC-L-valine Alias FMOC-Val-OH; N-[(9H-fluoren-9-ylmethoxy)carbonyl]valine; N-[(9H-fluoren-9-ylmethoxy)carbonyl]-L-valine; N-[(9H-fluoren-9-ylmethoxy)carbonyl]-D-valine; (2S)-2
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Cas:68858-20-8
Min.Order:1 Kilogram
Negotiable
Type:Lab/Research institutions
inquiryOur company has been in existence for 10 years since its establishment. We have our own unique team. The company integrates independent research and development, production and sales. We have established famous brands at home and abroad. At prese
Cas:68858-20-8
Min.Order:5 Gram
FOB Price: $1.5
Type:Trading Company
inquiryFMOC-L-Valine CAS:68858-20-8 Qingdao Belugas Import and Export Co., Ltd. is a scientific and technological company integrating research and development, production and trade of chemical intermediates, specializing in high quality organic intermediat
Cas:68858-20-8
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
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
Henan Wentao Chemical Product Co.,Ltd is Located in Zhengzhou High-tech Development Zone with import and export license, We passed ISO 9001:2008 as well, Henan Wentao has developed more than 1000 compounds, which are widely used in the fields of prod
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Cas:68858-20-8
Min.Order:1 Kilogram
FOB Price: $180.0 / 220.0
Type:Lab/Research institutions
inquiryProduct Name Fmoc-L-Val-OH Molecular Formula C20H21NO4 CAS Number 68858-20-8 Molecular Weight 339.40 Appearance White to off-white microcrystalline powd
Cas:68858-20-8
Min.Order:1 Gram
FOB Price: $10.0
Type:Lab/Research institutions
inquiryHangzhou KeyingChem Co., Ltd. exported this product to many countries and regions at best price. If you are looking for the material’s manufacturer or supplier in China, KeyingChem is your best choice. Pls contact with us freely for getting det
Company 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
Cas:68858-20-8
Min.Order:1 Gram
Negotiable
Type:Lab/Research institutions
inquiryA substitute for perfluorooctanoic acid, mainly used as a surfactant, dispersant, additive, etc Appearance:White solid or Colorless liquid Purity:99.3 % We will ship the goods in a timely manner as required We can provide relevant documents acc
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J&H CHEM 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. J&H CHEM has some Manufacturing base in Jia
Why Choose Us: 1. Factory direct sales, so we can provide the competitive price and high quality product base on 8 years of production and R&D experience. 2. It is available in stock for quick shipment.Products could be packaged according to cu
Conditions | Yield |
---|---|
With sodium carbonate In 1,4-dioxane at 0 - 20℃; | 96% |
Stage #1: L-valine With sodium hydrogencarbonate In 1,4-dioxane; water Stage #2: (fluorenylmethoxy)carbonyl chloride In 1,4-dioxane; water at 0 - 20℃; | 70% |
With pyridine; HOBT bound to the polystyrene-divinylbenzene copolymer resin 1.) DMF, H2O, 25 deg C, 2.) DMF, H2O, 25 deg C; Yield given. Multistep reaction; |
L-valine
3-(9-Fluorenylmethoxycarbonyl)-benzothiazoline-2-thione
Fmoc-Val-OH
Conditions | Yield |
---|---|
With sodium hydroxide In 1,4-dioxane for 12h; Ambient temperature; | 91% |
Conditions | Yield |
---|---|
With sodium hydrogencarbonate In water; acetone Ambient temperature; | 90% |
Conditions | Yield |
---|---|
With triethylamine In water; acetonitrile for 1h; | 89% |
Conditions | Yield |
---|---|
With sodium carbonate In N,N-dimethyl-formamide for 0.166667h; Ambient temperature; | 87% |
With sodium hydrogencarbonate In water; acetone | 86% |
Stage #1: L-valine With N-cyclohexyl-cyclohexanamine In acetone at 20℃; Stage #2: N-(9H-fluoren-2-ylmethoxycarbonyloxy)succinimide With sodium carbonate In water; acetonitrile at 0 - 20℃; pH=8; Stage #3: With potassium hydrogensulfate In water; acetonitrile pH=2 - 3; | 82% |
With sodium hydrogencarbonate In water; N,N-dimethyl-formamide at 0 - 20℃; for 2h; | |
With sodium carbonate In 1,4-dioxane; water at 20℃; for 18h; |
L-valine
Fmoc-Val-OH
Conditions | Yield |
---|---|
With potassium carbonate In acetonitrile at 20℃; for 2h; | 86% |
L-valine
Carbonic acid 3,5-dioxo-4-aza-tricyclo[5.2.1.02,6]dec-8-en-4-yl ester 9H-fluoren-9-ylmethyl ester
Fmoc-Val-OH
Conditions | Yield |
---|---|
With tertiary amine In 1,4-dioxane; water for 3h; | 85% |
N-(9-fluorenylmethoxycarbonyl)valine 1,1-dimethylallyl ester
Fmoc-Val-OH
Conditions | Yield |
---|---|
With 4-methyl-morpholine; tetrakis(triphenylphosphine) palladium(0) In tetrahydrofuran at 25℃; | 82% |
L-valine
Fmoc-Val-OH
Conditions | Yield |
---|---|
With triethylamine In water Ambient temperature; | 75% |
L-valine
Fmoc-Val-OH
Conditions | Yield |
---|---|
With potassium carbonate In acetone at 20℃; for 24h; | 75% |
Fmoc-Val-OH
Conditions | Yield |
---|---|
With magnesium; acetic acid In methanol; N,N-dimethyl-formamide at 20℃; for 75h; |
9-Fluorenylmethanol
Fmoc-Val-OH
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 72 percent / pyridine / CH2Cl2 / 5 h / Ambient temperature 2: 86 percent / NaHCO3 / H2O; acetone View Scheme | |
Multi-step reaction with 2 steps 1: pyridine / dichloromethane / 0 - 20 °C / Inert atmosphere 2: sodium carbonate / water; 1,4-dioxane / 0 - 20 °C / Inert atmosphere View Scheme | |
Multi-step reaction with 2 steps 1: pyridine / dichloromethane / 0 - 20 °C / Inert atmosphere 2: sodium carbonate / water; 1,4-dioxane / 1 h / 0 - 20 °C / Inert atmosphere View Scheme |
dicyclohexylamine salt of N-hydroxysuccinimide
Fmoc-Val-OH
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 90 percent / CHCl3 2: 86 percent / NaHCO3 / H2O; acetone View Scheme |
N-cyclohexyl-cyclohexanamine
Fmoc-Val-OH
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: 95 percent / acetone 2: 90 percent / CHCl3 3: 86 percent / NaHCO3 / H2O; acetone View Scheme |
N-hydroxy-5-norbornene-2,3-dicarboximide
Fmoc-Val-OH
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: 1.) NaOH / 1.) MeOH; 2.) benzene, 10-15 deg C, 2 h 2: pyridine / 1.) room temp., 1 h; 2.) 35 deg C, 3 h 3: 85 percent / tertiary amine / H2O; dioxane / 3 h View Scheme |
Chlorameisensaeure-N-hydroxy-norborn-5-en-2,3-dicarboximidester
Fmoc-Val-OH
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: pyridine / 1.) room temp., 1 h; 2.) 35 deg C, 3 h 2: 85 percent / tertiary amine / H2O; dioxane / 3 h View Scheme |
Fmoc-Val-OPfp
Fmoc-Val-OH
Conditions | Yield |
---|---|
With benzotriazol-1-ol; 17O-water In tetrahydrofuran; water at 20℃; for 240h; |
Fmoc-Val-OH
Conditions | Yield |
---|---|
With pyridine; pyridine hydrogenfluoride In tetrahydrofuran at 20℃; for 3h; |
(fluorenylmethoxy)carbonyl chloride
L-valine hydrochloride
Fmoc-Val-OH
Conditions | Yield |
---|---|
With N-ethyl-N,N-diisopropylamine In tetrahydrofuran at 20℃; for 2h; |
(fluorenylmethoxy)carbonyl chloride
Fmoc-Val-OH
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: sodium carbonate / dichloromethane; water / 20.5 h / 0 - 20 °C 2: sodium carbonate / water; acetone / 4 h / 20 °C / pH 9 - 10 View Scheme |
L-valine
N-(((9H-fluoren-9-yl)methoxy)carbonyloxy)-2-amino-2-oxoacetimidoyl cyanide
Fmoc-Val-OH
Conditions | Yield |
---|---|
With sodium carbonate In water; acetone at 20℃; for 4h; pH=9 - 10; |
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1.1: sodium carbonate / water; 1,4-dioxane / Cooling with ice 1.2: 5 h / 20 °C 2.1: trifluoroacetic acid / isopropyl alcohol; hexane / 25 °C / Resolution of racemate View Scheme |
(fluorenylmethoxy)carbonyl chloride
A
Fmoc-Val-OH
B
N-(9-fluorenylmethoxycarbonyl)-D-valine
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1.1: sodium carbonate / water; 1,4-dioxane / Cooling with ice 1.2: 5 h / 20 °C 2.1: trifluoroacetic acid / isopropyl alcohol; hexane / 25 °C / Resolution of racemate View Scheme |
Fmoc-valine
A
Fmoc-Val-OH
B
N-(9-fluorenylmethoxycarbonyl)-D-valine
Conditions | Yield |
---|---|
With trifluoroacetic acid In hexane; isopropyl alcohol at 25℃; Reagent/catalyst; Resolution of racemate; | |
With chiral column based on 3,5-dimethylphenylcarbamoylated β-cyclodextrin combining cinchona alkaloid immobilized on silica gel In methanol; formic acid; triethylamine; acetonitrile at 25℃; Resolution of racemate; enantioselective reaction; |
Conditions | Yield |
---|---|
With water for 24h; Kinetics; |
1-hydroxy-pyrrolidine-2,5-dione
Fmoc-Val-OH
2,5-dioxopyrrolidin-1-yl-N-[(9H-fluoren-9-ylmethoxy)carbonyl]-L-valinate
Conditions | Yield |
---|---|
With dicyclohexyl-carbodiimide In tetrahydrofuran at 20℃; for 9h; | 100% |
With 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In tetrahydrofuran; dichloromethane at 0 - 25℃; | 96% |
With dicyclohexyl-carbodiimide In tetrahydrofuran at 0 - 20℃; | 96% |
Fmoc-Val-OH
(S)-(9H-fluoren-9-yl)methyl 1-chloro-3-methyl-1-oxobutan-2-ylcarbamate
Conditions | Yield |
---|---|
With thionyl chloride In dichloromethane at 55 - 60℃; for 1h; Inert atmosphere; | 100% |
With thionyl chloride In dichloromethane at 50 - 55℃; for 1h; Inert atmosphere; | 100% |
With thionyl chloride In dichloromethane for 24h; Ambient temperature; | 90% |
Fmoc-Val-OH
(9H-fluoren-9-yl)methyl (S)-(1-fluoro-3-methyl-1-oxobutan-2-yl)carbamate
Conditions | Yield |
---|---|
With pyridine; trifluoro-[1,3,5]triazine In dichloromethane at 20℃; for 15h; | 100% |
With pyridine; trifluoro-[1,3,5]triazine In dichloromethane for 4h; Ambient temperature; | 85% |
With pyridine; trifluoro-[1,3,5]triazine In dichloromethane for 2h; | 70.2% |
Fmoc-Val-OH
2,2-dimethyl-3-(N-methyl-N-phenylamino)-2H-azirine
(9H-fluoren-9-yl)methyl 1-{(2S)-2-methyl-1-[({1,1-dimethyl-2-[methyl(phenyl)amino]-2-oxoethyl}amino)carbonyl]propyl}carbamate
Conditions | Yield |
---|---|
In dichloromethane at 20℃; for 72h; Condensation; | 100% |
Fmoc-Val-OH
Conditions | Yield |
---|---|
Stage #1: Leu-Cys(Trt)-Ala-Wang resin; Fmoc-Val-OH With benzotriazol-1-yloxyl-tris-(pyrrolidino)-phosphonium hexafluorophosphate; benzotriazol-1-ol; N-ethyl-N,N-diisopropylamine In dichloromethane; N,N-dimethyl-formamide at 20℃; for 3h; Stage #2: With piperidine In N,N-dimethyl-formamide at 20℃; for 0.25h; | 100% |
Fmoc-Val-OH
Conditions | Yield |
---|---|
With benzotriazol-1-ol; dicyclohexyl-carbodiimide In dichloromethane at 20℃; | 100% |
Conditions | Yield |
---|---|
With 1-[(1-(cyano-2-ethoxy-2-oxoethylidenaminooxy)dimethylamino-morpholino)]-uronium hexafluorophosphate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide for 2h; | 100% |
With N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide Product distribution; Further Variations:; Reagents; |
6-(tert-butoxycarbonylamino)hexanoic acid
Fmoc-Val-OH
N-[(9H-fluoren-9-ylmethoxy)carbonyl]-L-alanine
Boc-Ahx-Val-Ala-OH
Conditions | Yield |
---|---|
Multistep reaction.; | 100% |
2-(Trimethylsilyl)ethanol
Fmoc-Val-OH
(S)-2-(9H-fluoren-9-ylmethoxycarbonylamino)-3-methyl-butyric acid 2-trimethylsilanyl-ethyl ester
Conditions | Yield |
---|---|
With dmap; dicyclohexyl-carbodiimide In dichloromethane Cooling with ice; | 100% |
Conditions | Yield |
---|---|
With dmap; 2,4,6-trichlorobenzoyl chloride In toluene | 100% |
Fmoc-Val-OH
Conditions | Yield |
---|---|
Stage #1: Fmoc-Val-OH With pyridine; 2,6-Dichlorobenzoyl chloride In 1-methyl-pyrrolidin-2-one hydroxymethyl Merrifield resin; Stage #2: With piperidine In 1-methyl-pyrrolidin-2-one for 0.5h; hydroxymethyl Merrifield resin; | 100% |
Stage #1: Fmoc-Val-OH With pyridine; acetic anhydride; 2,6-Dichlorobenzoyl chloride In 1-methyl-pyrrolidin-2-one for 18h; Sasrin resin; Stage #2: With acetic anhydride In 1-methyl-pyrrolidin-2-one at 45℃; for 3h; Sasrin resin; Stage #3: With piperidine In 1-methyl-pyrrolidin-2-one for 1h; Sasrin resin; | 100% |
Conditions | Yield |
---|---|
Stage #1: fmoc-Leu-Alko Resin With piperidine In N,N-dimethyl-formamide Wang resin; Stage #2: With O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide for 1.5h; Wang resin; Heating; Stage #3: Fmoc-Val-OH; N-Fmoc L-Phe Further stages; | 100% |
N-(fluoren-9-ylmethoxycarbonyl)glycine
Fmoc-Val-OH
N-Fmoc L-Phe
C28H45N5O6
Conditions | Yield |
---|---|
Stage #1: fmoc-Leu-Alko Resin With piperidine In N,N-dimethyl-formamide Wang resin; Stage #2: With O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide for 1.5h; Wang resin; Heating; Stage #3: N-(fluoren-9-ylmethoxycarbonyl)glycine; Fmoc-Val-OH; N-Fmoc L-Phe Further stages; | 100% |
Fmoc-Val-OH
N-Fmoc L-Phe
N-(9-fluorenylmethyloxycarbonyl)-4-aminobutyric acid
C30H49N5O6
Conditions | Yield |
---|---|
Stage #1: fmoc-Leu-Alko Resin With piperidine In N,N-dimethyl-formamide Wang resin; Stage #2: With O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide for 1.5h; Wang resin; Heating; Stage #3: Fmoc-Val-OH; N-Fmoc L-Phe; N-(9-fluorenylmethyloxycarbonyl)-4-aminobutyric acid Further stages; | 100% |
N-(fluoren-9-ylmethoxycarbonyl)glycine
Fmoc-Val-OH
Fmoc-Leu-OH
N-Fmoc L-Phe
Fmoc-Tyr(tBu)-OH
Fmoc-Thr(tBu)-OH
Conditions | Yield |
---|---|
Stage #1: Fmoc-Thr(tBu)-OH With N-ethyl-N,N-diisopropylamine In dichloromethane for 3h; Stage #2: With piperidine In N,N-dimethyl-formamide for 0.1h; Stage #3: N-(fluoren-9-ylmethoxycarbonyl)glycine; Fmoc-Val-OH; Fmoc-Leu-OH; N-Fmoc L-Phe; Fmoc-Tyr(tBu)-OH Further stages; | 100% |
Conditions | Yield |
---|---|
With benzotriazol-1-ol; diisopropyl-carbodiimide In dichloromethane at 20 - 40℃; | 100% |
Conditions | Yield |
---|---|
With benzotriazol-1-ol; diisopropyl-carbodiimide In dichloromethane at 20 - 40℃; for 2h; | 100% |
Fmoc-Val-OH
2-((1S,2S)-3-(allyloxy)-1,2-dimethoxypropyl)aniline
(9H-fluoren-9-yl)methyl (S)-1-(2-((1S,2S)-3-(allyloxy)-1,2-dimethoxypropyl)phenylamino)-3-methyl-1-oxobutan-2-ylcarbamate
Conditions | Yield |
---|---|
With 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In acetonitrile at 20℃; for 3h; | 99.5% |
Conditions | Yield |
---|---|
With dmap; dicyclohexyl-carbodiimide In dichloromethane | 99% |
Conditions | Yield |
---|---|
In diethyl ether Ambient temperature; | 99% |
Conditions | Yield |
---|---|
With dmap; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 20℃; for 20h; Inert atmosphere; | 99% |
Fmoc-Val-OH
pregn-4-ene-3,20-dione cyclic 20-(ethylene acetal) 3-O-(N-Fmoc-L-valine)-E-oxime
Conditions | Yield |
---|---|
With dmap; dicyclohexyl-carbodiimide In dichloromethane Inert atmosphere; | 99% |
pregn-4-ene-3,20-dione cyclic 20-(ethylene acetal) 3-oxime
Fmoc-Val-OH
pregn-4-ene-3,20-dione cyclic 20-(ethylene acetal) 3-O-(N-Fmoc-L-valine)-Z-oxime
Conditions | Yield |
---|---|
With dmap; dicyclohexyl-carbodiimide In dichloromethane Inert atmosphere; | 99% |
Fmoc-Val-OH
tert-butyl hexa-4,5-dienoate
(R)-tert-butyl 4-(((S)-2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-3-methylbutanoyl)oxy)hex-5-enoate
Conditions | Yield |
---|---|
With chloro(1,5-cyclooctadiene)rhodium(I) dimer; (S,S)-2,3-O-isopropylidene-2,3-dihydroxy-1,4-bis(diphenylphosphino)butane In 1,2-dichloro-ethane at 10℃; for 48h; Schlenk technique; Inert atmosphere; diastereoselective reaction; | 99% |
Conditions | Yield |
---|---|
Stage #1: Fmoc-alanine-Wang-resin With piperidine In N,N-dimethyl-formamide at 75℃; for 0.05h; Fmoc-Ala-Wang-resin; Inert atmosphere; Microwave irradiation; Stage #2: With benzotriazol-1-ol; O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 75℃; for 0.05h; Fmoc-Ala-Wang-resin; Inert atmosphere; Microwave irradiation; Stage #3: Fmoc-Val-OH; acetic anhydride; (2S,3R)-Fmoc-O-benzyl-threonine Further stages; | 99% |
Fmoc-Val-OH
acetic anhydride
N-[(9H-fluoren-9-ylmethoxy)carbonyl]-L-isoleucine
Conditions | Yield |
---|---|
Stage #1: Fmoc-Gly-Wang resin With piperidine In N,N-dimethyl-formamide at 75℃; for 0.05h; Fmoc-Ala-Wang-resin; Inert atmosphere; Microwave irradiation; Stage #2: With benzotriazol-1-ol; O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 75℃; for 0.05h; Fmoc-Ala-Wang-resin; Inert atmosphere; Microwave irradiation; Stage #3: Fmoc-Val-OH; acetic anhydride; N-[(9H-fluoren-9-ylmethoxy)carbonyl]-L-isoleucine Further stages; | 99% |
Conditions | Yield |
---|---|
Stage #1: Fmoc-Gly-Wang resin With piperidine In N,N-dimethyl-formamide at 75℃; for 0.05h; Fmoc-Ala-Wang-resin; Inert atmosphere; Microwave irradiation; Stage #2: With benzotriazol-1-ol; O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 75℃; for 0.05h; Fmoc-Ala-Wang-resin; Inert atmosphere; Microwave irradiation; Stage #3: Fmoc-Val-OH; N-Fmoc L-Phe; acetic anhydride Further stages; | 99% |
Conditions | Yield |
---|---|
Stage #1: Fmoc-Gly-Wang resin With piperidine In N,N-dimethyl-formamide at 75℃; for 0.05h; Fmoc-Ala-Wang-resin; Inert atmosphere; Microwave irradiation; Stage #2: With benzotriazol-1-ol; O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate; N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 75℃; for 0.05h; Fmoc-Ala-Wang-resin; Inert atmosphere; Microwave irradiation; Stage #3: Fmoc-Val-OH; acetic anhydride; Fmoc-Phg-OH Further stages; | 99% |
Conditions | Yield |
---|---|
Stage #1: Fmoc-Val-OH; (4-(hydroxymethyl)phenyl)diphenylphosphine oxide With 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In dichloromethane at 0℃; for 0.166667h; Stage #2: With dmap In dichloromethane at 20℃; for 2h; | 99% |
Fmoc-Val-OH
Conditions | Yield |
---|---|
Stage #1: Fmoc-Val-OH With 2,4,6-trichlorobenzoyl chloride; triethylamine In tetrahydrofuran at 0℃; for 1h; Yamaguchi Lactonization; Inert atmosphere; Stage #2: (((R)-2'-(((S,E)-6-((tert-butoxycarbonyl)amino)-3-hydroxyhex-4-enamido)methyl)-4-methyl-4,5-dihydro-[2,4'-bithiazole]-4-carbonyl)oxy)fermium With dmap In tetrahydrofuran at 0 - 25℃; for 0.5h; Yamaguchi Lactonization; Inert atmosphere; | 99% |
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