IL80759A0 - 5,7-diene steroids useful as intermediates in the synthesis of 25-hydroxy-vitamin d2 and analogs thereof
- Google Patents
5,7-diene steroids useful as intermediates in the synthesis of 25-hydroxy-vitamin d2 and analogs thereof
Info
Publication number
IL80759A0
IL80759A0IL80759AIL8075986AIL80759A0IL 80759 A0IL80759 A0IL 80759A0IL 80759 AIL80759 AIL 80759AIL 8075986 AIL8075986 AIL 8075986AIL 80759 A0IL80759 A0IL 80759A0
Authority
IL
Israel
Prior art keywords
analogs
intermediates
vitamin
hydroxy
synthesis
Prior art date
Application number
IL80759A
Original Assignee
Wisconsin Alumni Res Found
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Priority claimed from US06/420,191external-prioritypatent/US4448721A/en
Application filed by Wisconsin Alumni Res FoundfiledCriticalWisconsin Alumni Res Found
Priority to IL80759ApriorityCriticalpatent/IL80759A0/en
Publication of IL80759A0publicationCriticalpatent/IL80759A0/en
24,24-difluoro-1alpha,25-dihydroxycholecalciferol,24,24-difluoro-1alpha,25,-dihydroxy-5,6-trans-cholecalciferol and intermediates;pharmaceutical compositions
New process for the preparation of certain steroids especially intermediates for the preparation of proligestone and related compounds and new intermediates formed in this process
19-nor steroids substituted at positions 11 and 17 and optionally at position 2, their preparation, their use as medicaments, compositions containing them and intermediates obtained