Vitamin D compounds and method of preparing these compounds
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United States of America
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Sep 5, 2000
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N/A
app pub date -
Sep 15, 1997
filing date -
Jun 4, 1993
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Abstract
The invention relates to a new vitamin D compound of the general formula ##STR1## wherein: R.sub.1 is a hydrogen atom or a hydroxy group; R.sub.2 is a (C.sub.1 -C.sub.3)alkyl group, a hydroxy(C.sub.1 -C.sub.3)alkyl group, a (C.sub.1 -C.sub.2)alkoxymethyl group or a (C.sub.2 -C.sub.3)alkenyl or alkynyl group; R.sub.3 is a branched or non-branched, saturated or unsaturated aliphatic 3- to 5 -membered hydrocarbon or oxahydrocarbon biradical, having at least 3 atoms in the main chain and being optionally substituted with one or more substituents selected from epoxy, fluoro and hydroxy; R.sub.4 is a sec. or tert. (C.sub.3 -C.sub.6)alkyl group or a (C.sub.3 -C.sub.6)cycloalkyl group; and A and B are each individually hydrogen atoms or methyl groups, or A and B form together a methylene group. The invention further relates to a method of preparing these compounds and to their use in pharmacotherapy and cosmetics.
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