1.alpha.,25-dihydroxyvitamin D4 compounds, ergosta-5,7-diene com

Details 1.alpha.,25-dihydroxyvitamin D4 compounds, ergosta-5,7-diene com 1.alpha.,25-dihydroxyvitamin D4 compounds, ergosta-5,7-diene com

1990-03-21

1992-10-20

Bond, Robert T.

Organic compounds -- part of the class 532-570 series

Organic compounds

9,10-seco-cyclopentanohydrophenanthrene ring system or...

C07C17200, C07J 900

Patent

active

051571358

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.

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Ogata, et al. Chem. Parm. Bull, 1978 26(10) 2933-40 Chemical Abstracts vol. 90, 1979 Abstract 138096.

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