Technology Process of 5-BETA-PREGNAN-3-ALPHA, 17,21-TRIOL-11,20-DIONE 3-ACETATE
There total 10 articles about 5-BETA-PREGNAN-3-ALPHA, 17,21-TRIOL-11,20-DIONE 3-ACETATE which
guide to synthetic route it.
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synthetic route:
- Guidance literature:
-
Multi-step reaction with 7 steps
1: 7.4 g / H2 / palladium on calcium carbonate / pyridine / 12 h
2: saponification
3: 2.2 g / imidazole / pyridine; dimethylformamide / 1 h / Ambient temperature
4: 410 mg / H2 / Raney nickel (W-2) / dioxane / 10 h
5: 500 mg / pyridine / 12 h / Ambient temperature
6: 440 mg / pyridinium chlorochromate / CH2Cl2 / 2 h / Ambient temperature
7: 300 mg / 30 percent H2SO4 / acetone / 0.5 h / Ambient temperature
With
1H-imidazole; sulfuric acid; hydrogen; pyridinium chlorochromate;
palladium on activated charcoal; Raney nickel (W-2);
In
1,4-dioxane; pyridine; dichloromethane; N,N-dimethyl-formamide; acetone;
DOI:10.1248/cpb.30.2110
- Guidance literature:
-
Multi-step reaction with 5 steps
1: 2.2 g / imidazole / pyridine; dimethylformamide / 1 h / Ambient temperature
2: 410 mg / H2 / Raney nickel (W-2) / dioxane / 10 h
3: 500 mg / pyridine / 12 h / Ambient temperature
4: 440 mg / pyridinium chlorochromate / CH2Cl2 / 2 h / Ambient temperature
5: 300 mg / 30 percent H2SO4 / acetone / 0.5 h / Ambient temperature
With
1H-imidazole; sulfuric acid; hydrogen; pyridinium chlorochromate;
Raney nickel (W-2);
In
1,4-dioxane; pyridine; dichloromethane; N,N-dimethyl-formamide; acetone;
DOI:10.1248/cpb.30.2110
- Guidance literature:
-
Multi-step reaction with 6 steps
1: saponification
2: 2.2 g / imidazole / pyridine; dimethylformamide / 1 h / Ambient temperature
3: 410 mg / H2 / Raney nickel (W-2) / dioxane / 10 h
4: 500 mg / pyridine / 12 h / Ambient temperature
5: 440 mg / pyridinium chlorochromate / CH2Cl2 / 2 h / Ambient temperature
6: 300 mg / 30 percent H2SO4 / acetone / 0.5 h / Ambient temperature
With
1H-imidazole; sulfuric acid; hydrogen; pyridinium chlorochromate;
Raney nickel (W-2);
In
1,4-dioxane; pyridine; dichloromethane; N,N-dimethyl-formamide; acetone;
DOI:10.1248/cpb.30.2110