1.alpha.,25-dihydroxyvitamin D4 compounds, ergosta-5,7-diene compounds and processes for the preparation thereof
US5157135A · kind A · utility
21Cited by
4References
1Claims
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Key dates
| Filing date | Mar 21, 1990 |
| Grant date | Oct 20, 1992 |
| Priority date | — |
| Expiry date | Mar 21, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07J71/0042
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
(24S)- and (24R)-1.alpha.,25-Dihydroxyvitamin D.sub.4 compounds and processes for preparing same. Ergosta-5,7-diene compounds which are useful intermediates in the synthesis of the 1.alpha.,25-dihydroxyvitamin D.sub.4 compounds. The D.sub.4 compounds are expected to possess an interesting pharmacological activity in association with the active-type vitamins D.sub.3 and D.sub.2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.