Selective Acetylation of 20-Hydroxyecdysone. Partial Synthesis of Some Minor Ecdysteroids and Analogues

Article abstract of DOI:10.1016/0040-4020(95)00635-L

Selective acetylation of the 2,3- and 20,22-acetonide and 2,3:20,22-diacetonide derivatives of 20-hydroxyecdysone and subsequent removal of the protecting groups led to partial synthesis of a number of mono-, di- and triacetate derivatives of 20-hydroxyecdysone.Some of these acetate derivatives are minor, naturally occurring ecdysteroids.