H. Chodounska et al., ONE-POT DEUTERATION AND REDUCTION OF KETONES IN THE SYNTHESIS OF [16,16,17-H-2(3)]-EPITESTOSTERONE, Collection of Czechoslovak Chemical Communications, 61(7), 1996, pp. 1037-1046
5 alpha-Androstan-17-one and 6 beta-methoxy-3 alpha,5-cyclo-5 alpha-an
drostan-17-one were reduced by sodium in deuterium oxide to [16,16,17-
H-2(3)]-17 beta-alcohols. The 17 beta-tosyloxy group of [16,16,17-H-2(
3)]-6 beta-methoxy-3 alpha,5-cyclo-5 alpha-androstan-17 beta-ol tosyla
te was found to be stable under the conditions of the i-steroid rearra
ngement. The S(N)2 reaction of the 17 beta-tosyloxy group with potassi
um nitrite yielded the corresponding 17 alpha-hydroxy derivative witho
ut any loss of deuterium.