Nagaoka M, Endo M, Numazawa M
Tohoku Pharmaceutical University, Aobaku, Sendai, Japan.
Chem Pharm Bull (Tokyo). 2000 Aug;48(8):1215-8. doi: 10.1248/cpb.48.1215.
16Alpha-hydroxy-17-keto 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.