초록
Synthesis of azosteroid 3-aza-A-homo-cholestane-4-one, 3-aza-A-homo-coprostane-4-one and 3-aza-A-homo-cholestane-4-one from corresponding oxim and keto-steroid by means of Beckmann's and Schimdt's rearrangement by perphosphoric acid have been evaluated.