Method for preparing 1.alpha.-hydroxyvitamin D compounds
US4554106A · kind A · utility
26Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 1, 1984 |
| Grant date | Nov 19, 1985 |
| Priority date | — |
| Expiry date | Nov 1, 2004 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61P3/14
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention relates to a process for separating 1.alpha.-hydroxyvitamin D compounds from their corresponding 1.alpha.-hydroxy-5,6-trans isomers in a mixture thereof by treating the mixture with a dienophile and then separating the resulting dienophil-adduct of the 1.alpha.-hydroxy-5,6-trans vitamin D isomer from the unreacted 1.alpha.-hydroxyvitamin D compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.