Analogs of ecdysteroids with a tetrasubstituted Δ8,14-bond
摘要:
By hydrogenation of (20R,22R)-6 alpha,14 alpha,25-trihydroxy-and (20R,22R)-6 beta,14 alpha,25-trihydroxy-2,3:20,22-bis(isopropylidenedioxy)-5 alpha-cholest-7-enes on a catalyst (Raney nickel) the corresponding (5 alpha,6 alpha)-and (5 beta,6 beta)-epimers of previously unknown Delta(8,14)-6-hydroxy derivatives of ecdysteroids were synthesized.