Technology Process of (-)-(2R,3R,4S,5R)-N-(benzyloxycarbonyl)-5-O-(t-butyldimethylsilyl)-3,4-O-isopropylidene-2,3,4,5-piperidinetetrol
There total 9 articles about (-)-(2R,3R,4S,5R)-N-(benzyloxycarbonyl)-5-O-(t-butyldimethylsilyl)-3,4-O-isopropylidene-2,3,4,5-piperidinetetrol which
guide to synthetic route it.
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synthetic route:
- Guidance literature:
-
With
L-Selectride;
In
tetrahydrofuran;
at -78 - 20 ℃;
DOI:10.1246/bcsj.65.978
- Guidance literature:
-
Multi-step reaction with 8 steps
1: pyridine / -30 °C
2: NaN3 / dimethylsulfoxide / 2 h / 65 °C
3: pyridine, CrO3 / CH2Cl2 / 0.5 h / Ambient temperature
4: H2 / Raney Ni / methanol / 2 h / Ambient temperature
5: 93 percent / imidazole / dimethylformamide / 2 h / Ambient temperature
6: 96 percent / NaH / dimethylformamide / 2 h / Ambient temperature
7: 92 percent / sodium borohydride / ethanol / Ambient temperature
8: 1) dimethyl sulfoxide, oxalyl dichloride; 3) triethylamine / 1) CH2Cl2, -60 deg C, 5 min; 2) CH2Cl2, -60 deg C, 15 min; 3) CH2Cl2, -60 deg C, 10 min, then room temp.
With
pyridine; 1H-imidazole; chromium(VI) oxide; sodium tetrahydroborate; sodium azide; oxalyl dichloride; hydrogen; sodium hydride; dimethyl sulfoxide; triethylamine;
nickel;
In
methanol; ethanol; dichloromethane; dimethyl sulfoxide; N,N-dimethyl-formamide;
DOI:10.1246/bcsj.65.978
-
-
532-20-7,613-83-2,7261-25-8,7687-39-0,13221-22-2,14795-83-6,15761-67-8,20074-49-1,25545-03-3,25545-04-4,32445-75-3,34436-17-4,36441-93-7,36468-53-8,37110-85-3,37388-49-1,38029-69-5,40461-77-6,40461-89-0,41546-19-4,41546-20-7,41546-21-8,41546-26-3,41546-29-6,41546-30-9,41546-31-0,126872-16-0,131064-98-7
D-Ribose
- Guidance literature:
-
Multi-step reaction with 9 steps
1: p-toluenesulfonic acid monohydrate / a) 10 deg C, 1h, b) RT, 3 h
2: pyridine / -30 °C
3: NaN3 / dimethylsulfoxide / 2 h / 65 °C
4: pyridine, CrO3 / CH2Cl2 / 0.5 h / Ambient temperature
5: H2 / Raney Ni / methanol / 2 h / Ambient temperature
6: 93 percent / imidazole / dimethylformamide / 2 h / Ambient temperature
7: 96 percent / NaH / dimethylformamide / 2 h / Ambient temperature
8: 92 percent / sodium borohydride / ethanol / Ambient temperature
9: 1) dimethyl sulfoxide, oxalyl dichloride; 3) triethylamine / 1) CH2Cl2, -60 deg C, 5 min; 2) CH2Cl2, -60 deg C, 15 min; 3) CH2Cl2, -60 deg C, 10 min, then room temp.
With
pyridine; 1H-imidazole; chromium(VI) oxide; sodium tetrahydroborate; sodium azide; oxalyl dichloride; hydrogen; sodium hydride; toluene-4-sulfonic acid; dimethyl sulfoxide; triethylamine;
nickel;
In
methanol; ethanol; dichloromethane; dimethyl sulfoxide; N,N-dimethyl-formamide;
DOI:10.1246/bcsj.65.978