The long-range effect of substituents in the 17-position on the hydrogenation of double bond of the steroidal ∆4-3-ketones in acetic acid on a platinum catalyst is described in a series of testosterone (1) and epitestosterone (5) esters with carboxylic acids of varying alkyl chain length. The ratio 5α- to 5β-products is affected by the nature of substituents in the position 17.
在乙酸中,17位取代基对类固醇∆4-3-酮双键在铂催化剂上的氢化长程效果的影响在一系列睾酮(1)和表睾酮(5)酯中得到描述,这些酯使用不同烷基链长度的羧酸。 5α-和5β-产物的比率受17位取代基的性质影响。