Process for preparing 3a(β)-7a(β)-dihydroxy-6a(β)-alkyl-5β-cholanic acid
US7994352B2 · kind B2 · utility
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39Claims
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Key dates
| Filing date | May 19, 2006 |
| Grant date | Aug 9, 2011 |
| Priority date | — |
| Expiry date | Dec 3, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P9/10
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Process for preparing 3α-7α(β)-dihydroxy-6α(β)-alkyl-5β-cholanic acid (I) in which R is a linear or branched C1-C5 alkyl and the relative intermediates 3α-hydroxy-6β-alkyl-7-keto-5β-cholanic (VIII) and 3α-hydroxy-6α-alkyl-7-keto-5β-cholanic (IX).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.