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inquiry[(3aR,5S,6aR)-2,2-dimethyltetrahydrofuro[2,3-d][1,3]dioxol-5-yl]methyl benzoate
acetic anhydride
5-O-benzoyl-3-deoxy-1,2-di-O-acetyl-α,β-D-erythro-pentofuranose
Conditions | Yield |
---|---|
Stage #1: [(3aR,5S,6aR)-2,2-dimethyltetrahydrofuro[2,3-d][1,3]dioxol-5-yl]methyl benzoate With acetic acid for 2h; Heating; Stage #2: acetic anhydride With pyridine; dmap at 20℃; Further stages.; | 80% |
With sulfuric acid In acetic acid | 52% |
5-O-benzoyl-3-deoxy-1,2-di-O-acetyl-α,β-D-erythro-pentofuranose
2,4-bis(trimethylsiloxy)-5-methylpyrimidine
2'-O-acetyl-5'-O-benzoyl-3'-deoxy-5-methyluridine
Conditions | Yield |
---|---|
With tin(IV) chloride In acetonitrile | 93% |
4-N-Acetylcytosine
5-O-benzoyl-3-deoxy-1,2-di-O-acetyl-α,β-D-erythro-pentofuranose
3'-deoxycytidine
Conditions | Yield |
---|---|
Stage #1: 4-N-Acetylcytosine; 5-O-benzoyl-3-deoxy-1,2-di-O-acetyl-α,β-D-erythro-pentofuranose With benzenesulfonamide In acetonitrile for 1h; Heating; Stage #2: With trimethylsilyl trifluoromethanesulfonate at 20℃; for 5h; Stage #3: With ammonium hydroxide In tetrahydrofuran; methanol at 50℃; for 6h; Further stages.; | 90% |
5-O-benzoyl-3-deoxy-1,2-di-O-acetyl-α,β-D-erythro-pentofuranose
Conditions | Yield |
---|---|
With trimethylsilylazide; tin(IV) chloride In dichloromethane at 23℃; for 12h; azidation; | 74% |
5-O-benzoyl-3-deoxy-1,2-di-O-acetyl-α,β-D-erythro-pentofuranose
N6-isobutyrylaminocytosine
2'-O-Acetyl-5'-O-benzoyl-4-N-isobutyryl-3'-deoxycytidine
Conditions | Yield |
---|---|
With tin(IV) chloride In 1,2-dichloro-ethane at 27℃; for 20h; | 62% |
5-O-benzoyl-3-deoxy-1,2-di-O-acetyl-α,β-D-erythro-pentofuranose
C6H2ClN5
C20H16ClN5O5
Conditions | Yield |
---|---|
With boron trifluoride diethyl etherate In acetonitrile for 1h; Reflux; | 61% |
5-O-benzoyl-3-deoxy-1,2-di-O-acetyl-α,β-D-erythro-pentofuranose
5-methyltetrazole
Conditions | Yield |
---|---|
In ethylenediamine for 48h; | 54% |
Conditions | Yield |
---|---|
In ethylenediamine for 48h; | 51% |
5-O-benzoyl-3-deoxy-1,2-di-O-acetyl-α,β-D-erythro-pentofuranose
Conditions | Yield |
---|---|
Stage #1: 5-O-benzoyl-3-deoxy-1,2-di-O-acetyl-α,β-D-erythro-pentofuranose; N-(6,8-dioxo-7-(4-(trifluoromethyl)benzyl)-6,7,8,9-tetrahydro-1H-purin-2-yl)acetamide With N,O-bis-(trimethylsilyl)-acetamide In 1,2-dichloro-ethane at 80℃; for 0.5h; Inert atmosphere; Stage #2: With trimethylsilyl trifluoromethanesulfonate In 1,2-dichloro-ethane at 80℃; for 3h; | 11% |
(Ac)G(TMS)2
5-O-benzoyl-3-deoxy-1,2-di-O-acetyl-α,β-D-erythro-pentofuranose
Conditions | Yield |
---|---|
Yield given. Yields of byproduct given; |
5-O-benzoyl-3-deoxy-1,2-di-O-acetyl-α,β-D-erythro-pentofuranose
5-phenyl-2H-1,2,3,4-tetrazole
Conditions | Yield |
---|---|
With tin(IV) chloride 1.) acetonitrile, 0 deg C, 1 h, 2.) 50 deg C, 2 h; Yield given. Multistep reaction; |
5-O-benzoyl-3-deoxy-1,2-di-O-acetyl-α,β-D-erythro-pentofuranose
4-amino-8H-pyrido[2,3-d]pyrimidin-5-one
A
benzoic acid 4-acetoxy-5-(4-amino-5-oxo-5H-pyrido[2,3-d]pyrimidin-8-yl)-tetrahydro-furan-2-ylmethyl ester
Conditions | Yield |
---|---|
Stage #1: 4-aminopyrido[2,3-d]pyrimidin-5(8H)-one With N,O-bis-(trimethylsilyl)-acetamide In 1,2-dichloro-ethane at 75℃; for 2h; Stage #2: 5-O-benzoyl-3-deoxy-1,2-di-O-acetyl-α,β-D-erythro-pentofuranose With trimethylsilyl trifluoromethanesulfonate In 1,2-dichloro-ethane for 72h; Vorbrueggen reaction; Heating; Further stages.; |
5-O-benzoyl-3-deoxy-1,2-di-O-acetyl-α,β-D-erythro-pentofuranose
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1.1: N,O-bis(trimethylsilyl)acetamide / 1,2-dichloro-ethane / 2 h / 75 °C 1.2: trimethylsilyl triflate / 1,2-dichloro-ethane / 72 h / Heating 2.1: NH3 / methanol / 20 h / 20 °C View Scheme |
5-O-benzoyl-3-deoxy-1,2-di-O-acetyl-α,β-D-erythro-pentofuranose
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 74 percent / Me3SiN3 / SnCl4 / CH2Cl2 / 12 h / 23 °C 2: SnCl4 / Me3SiOAc / CH2Cl2 / 192 h / 23 °C View Scheme |
5-O-benzoyl-3-deoxy-1,2-di-O-acetyl-α,β-D-erythro-pentofuranose
3'-deoxycytidine
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 62 percent / SnCl4 / 1,2-dichloro-ethane / 20 h / 27 °C 2: 98 percent / NH3 / methanol / 12 h / 25 °C View Scheme |
5-O-benzoyl-3-deoxy-1,2-di-O-acetyl-α,β-D-erythro-pentofuranose
4-(N-Isobutyryl)-3'-deoxycytidine
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: 62 percent / SnCl4 / 1,2-dichloro-ethane / 20 h / 27 °C 2: 98 percent / NH3 / methanol / 12 h / 25 °C 3: 77 percent / dimethylformamide / 18 h / 25 °C View Scheme |
5-O-benzoyl-3-deoxy-1,2-di-O-acetyl-α,β-D-erythro-pentofuranose
4-(N-Isobutyryl)-5'-O-(4,4'-dimethoxytrityl)-3'-deoxycytidine
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1: 62 percent / SnCl4 / 1,2-dichloro-ethane / 20 h / 27 °C 2: 98 percent / NH3 / methanol / 12 h / 25 °C 3: 77 percent / dimethylformamide / 18 h / 25 °C 4: 84 percent / pyridine / 24 h / 25 °C View Scheme |
5-O-benzoyl-3-deoxy-1,2-di-O-acetyl-α,β-D-erythro-pentofuranose
Conditions | Yield |
---|---|
Multi-step reaction with 5 steps 1: 62 percent / SnCl4 / 1,2-dichloro-ethane / 20 h / 27 °C 2: 98 percent / NH3 / methanol / 12 h / 25 °C 3: 77 percent / dimethylformamide / 18 h / 25 °C 4: 84 percent / pyridine / 24 h / 25 °C 5: 86 percent / diisopropylammonium tetrazolide / CH2Cl2 / 7 h / 25 °C View Scheme |
5-O-benzoyl-3-deoxy-1,2-di-O-acetyl-α,β-D-erythro-pentofuranose
3'-deoxy-5'-O-dimethoxytrityl-5-methyluridine
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1: 93 percent / SnCl4 / acetonitrile 2: 94 percent / K2CO3, MeOH / Heating 3: 81 percent / pyridine View Scheme |
5-O-benzoyl-3-deoxy-1,2-di-O-acetyl-α,β-D-erythro-pentofuranose
Diisopropyl-phosphoramidous acid (2R,3R,5S)-5-[bis-(4-methoxy-phenyl)-phenyl-methoxymethyl]-2-(5-methyl-2,4-dioxo-3,4-dihydro-2H-pyrimidin-1-yl)-tetrahydro-furan-3-yl ester 2-cyano-ethyl ester
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1: 93 percent / SnCl4 / acetonitrile 2: 94 percent / K2CO3, MeOH / Heating 3: 81 percent / pyridine 4: 66 percent / iPr2NEt / tetrahydrofuran View Scheme |
5-O-benzoyl-3-deoxy-1,2-di-O-acetyl-α,β-D-erythro-pentofuranose
3'-deoxy-5-methyluridine
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1: 93 percent / SnCl4 / acetonitrile 2: 94 percent / K2CO3, MeOH / Heating View Scheme |
5-O-benzoyl-3-deoxy-1,2-di-O-acetyl-α,β-D-erythro-pentofuranose
{(2S,4R,5R)-4-(acetyloxy)-5-[3-(aminocarbonyl)-2-oxo-1(2H)-pyrazinyl]tetrahydro-2-furanyl}methyl benzoate
Conditions | Yield |
---|---|
With tin(IV) chloride In acetonitrile at 20℃; for 0.5h; |
5-O-benzoyl-3-deoxy-1,2-di-O-acetyl-α,β-D-erythro-pentofuranose
5-aminothaizolo<4,5-d>pyrimidine-2,7(3H,6H)-dione
Conditions | Yield |
---|---|
Stage #1: 5-aminothiazolo<4,5-d>pyrimidine-2,7(3H,6H)-dione With N,O-bis-(trimethylsilyl)-acetamide In acetonitrile at 20 - 70℃; for 0.5h; Inert atmosphere; Stage #2: 5-O-benzoyl-3-deoxy-1,2-di-O-acetyl-α,β-D-erythro-pentofuranose With trimethylsilyl trifluoromethanesulfonate In acetonitrile at 70℃; for 14h; Inert atmosphere; | 5.7 g |
5-O-benzoyl-3-deoxy-1,2-di-O-acetyl-α,β-D-erythro-pentofuranose
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1.1: N,O-bis-(trimethylsilyl)-acetamide / acetonitrile / 0.5 h / 20 - 70 °C / Inert atmosphere 1.2: 14 h / 70 °C / Inert atmosphere 2.1: potassium carbonate / methanol / 3.5 h / 20 °C View Scheme |
5-O-benzoyl-3-deoxy-1,2-di-O-acetyl-α,β-D-erythro-pentofuranose
Conditions | Yield |
---|---|
Multi-step reaction with 2 steps 1.1: N,O-bis-(trimethylsilyl)-acetamide / acetonitrile / 0.5 h / 20 - 70 °C / Inert atmosphere 1.2: 14 h / 70 °C / Inert atmosphere 2.1: potassium carbonate / methanol / 3.5 h / 20 °C View Scheme |
5-O-benzoyl-3-deoxy-1,2-di-O-acetyl-α,β-D-erythro-pentofuranose
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1.1: N,O-bis-(trimethylsilyl)-acetamide / acetonitrile / 0.5 h / 20 - 70 °C / Inert atmosphere 1.2: 14 h / 70 °C / Inert atmosphere 2.1: potassium carbonate / methanol / 3.5 h / 20 °C 3.1: 1H-imidazole / Petroleum ether; N,N-dimethyl-formamide / 2 h / 20 °C View Scheme |
5-O-benzoyl-3-deoxy-1,2-di-O-acetyl-α,β-D-erythro-pentofuranose
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1.1: N,O-bis-(trimethylsilyl)-acetamide / acetonitrile / 0.5 h / 20 - 70 °C / Inert atmosphere 1.2: 14 h / 70 °C / Inert atmosphere 2.1: potassium carbonate / methanol / 3.5 h / 20 °C 3.1: 1H-imidazole / Petroleum ether; N,N-dimethyl-formamide / 2 h / 20 °C 4.1: Dess-Martin periodane / tetrahydrofuran / 2 h / 20 °C View Scheme |
5-O-benzoyl-3-deoxy-1,2-di-O-acetyl-α,β-D-erythro-pentofuranose
Conditions | Yield |
---|---|
Multi-step reaction with 3 steps 1.1: N,O-bis-(trimethylsilyl)-acetamide / acetonitrile / 0.5 h / 20 - 70 °C / Inert atmosphere 1.2: 14 h / 70 °C / Inert atmosphere 2.1: potassium carbonate / methanol / 3.5 h / 20 °C 3.1: dmap / dichloromethane / 20 °C View Scheme |
5-O-benzoyl-3-deoxy-1,2-di-O-acetyl-α,β-D-erythro-pentofuranose
Conditions | Yield |
---|---|
Multi-step reaction with 4 steps 1.1: N,O-bis-(trimethylsilyl)-acetamide / acetonitrile / 0.5 h / 20 - 70 °C / Inert atmosphere 1.2: 14 h / 70 °C / Inert atmosphere 2.1: potassium carbonate / methanol / 3.5 h / 20 °C 3.1: dmap / dichloromethane / 20 °C 4.1: 2,2'-azobis(isobutyronitrile) / toluene / 4 h / 80 °C / Inert atmosphere 4.2: 2 h / 20 °C / Inert atmosphere View Scheme |
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