HCID 54103955, compound → HCID 54537119, compound

Participants

Reaction Steps

Shake 13β-isopropyl-3-methoxygona-1,3,5(10),8,14-pentaen-17-one (2 g) in dioxan (50 cc) with a freshly prepared but moderately active Raney nickel catalyst (ca. 0.5 g) in hydrogen at atmospheric pressure. When, after several hours the theoretical amount of hydrogen for half-hydrogenation (160 cc) has been absorbed, filter off the nickel catalyst and remove the solvent by evaporation. Crystallize the residual gum from methanol to obtain the title product (1.2 g), m.p. 85°-100°C; ultraviolet absorption peak at 280 mμ (ε11,800).

Provenance & Evidence