HCID 54091434, compound → HCID 53866954, compound

Participants

Reaction Steps

To a pre-reduced suspension of 2% palladium on calcium carbonate catalyst (7.0 g) in benzene (30 cc) add a solution of 13β-isobutyl-3-methoxygona-1,3,5(10),8,14-pentaen-17-one (20.0 g) in benzene (500 cc) and hydrogenate the mixture at atmospheric pressure until one mole equivalent of hydrogen is consumed. After the catalyst is removed by filtration, evaporate the solvent to obtain a gum which on crystallization from ethanol affords the title product (17.1 g.; 71%), m.p. 117°-119°; ultraviolet absorption peak at 278 mμ (ε14,560).

Provenance & Evidence