Abstract
1. The transformation of 21-0,N-isopropylidene derivatives of 16α,17α-epiminopregn-5-ene-2β,21-diol-20-one into 20-0,N-isopropylidene derivatives of 16α,17α-epiminopregn-5-ene-3β,20-diol-20-one was discovered, and, based on this, a new variant of the synthesis of 16α,17α-epiminopregn-5-ene-3β,21-diol-20-one-3′,21-diacetate was proposed. 2. A new class of steroids with additional tetrahydrofuran and 1′,3 -imidazolidine-2′thione rings E and F, respectively, was synthesized.
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More From: Bulletin of the Academy of Sciences of the USSR Division of Chemical Science
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