Formation of 17.BETA.-Alkoxy-16-keto Steroids by Reaction of 16.ALPHA.-Hydroxy-17-keto and 17.BETA.-Hydroxy-16-keto Steroids with Trimethylsilyl Iodide in the Presence of Alkyl Alcohols.
作者:Masao NAGAOKA、Michiko ENDO、Mitsuteru NUMAZAWA
DOI:10.1248/cpb.48.1215
日期:——
steroids, 1, 3, and 8, and their 17beta-hydroxy-16-keto isomers, 4, 5, and 9, were transformed into the corresponding 17beta-alkoxy-16-keto derivatives on treatment with trimethylsilyl iodide (TMSI) in the presence of alkyl alcohol in CHCl3 in poor to high yields.