Process for preparing 17,20-epoxy steroids

Details Process for preparing 17,20-epoxy steroids Process for preparing 17,20-epoxy steroids

1995-03-09

1996-04-02

Rizzo, Nicholas

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

540 34, 540120, C07J 100

Patent

active

055042031

ABSTRACT:
A compound of the formula ##STR1## wherein R is=0 or ##STR2## and the rings A and B are selected from the group consisting of ##STR3## K is oxo or a protector group of oxo of the formula ##STR4## n is 2 or 3 and R.sub.1 is an ether or ester remainder, K' is oxo or a protector oxime, hydrazone or semicarbazone group and the wavy lines symbolize an isomer mixture, a process for their preparation and their use as intermediates.

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patent: 4110326 (1978-08-01), Tula
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