Graef V, Golf S W
Experientia. 1976 Oct 15;32(10):1250-1. doi: 10.1007/BF01953075.
6beta-Methoxy-9beta,10 alpha-pregna-4,6-diene-3,20-dione inhibits the delta4-3-oxosteroid-5alpha-reduction in microsomes and the delta4-3-oxosteroid-5beta-reduction in the soluble fraction of male rat liver. The 3alpha- and 3beta-hydroxysteroid dehydrogenase are not inhibited by these substances.