Pregnenolone (2) is used in a novel synthesis of 2 beta ,3 beta ,20 beta -triacetoxy-6-ketosteroid (6), a key intermediate in the preparation of 20-hydroxyecdysone (1).
Pregnenolone (2) is used in a novel synthesis of 2 beta ,3 beta ,20 beta -triacetoxy-6-ketosteroid (6), a key intermediate in the preparation of 20-hydroxyecdysone (1).