Reduction of 1,4-Dien-3-one Steroids with LiAl2H4 or NaB2H4: Stereospecific Deuterium-Labeling at the C-1.ALPHA. Position of a 4-En-3-one Steroid
作者:Mitsuteru Numazawa、Wakako Handa
DOI:10.1248/cpb.54.554
日期:——
Reduction of a double bond at C-1 of 1,4-dien-3-one steroids 7 and 8 with LiAl2H4 in THF or NaB2H4 in MeOH and H2O gave stereospecifically [1alpha-2H]-labeled 4-en-3-one steroids 9 and 10, respectively. When the deuterated solvents, MeO2H and 2H2O, were used for the reaction of steroid 8 with NaB2H4, [1alpha,2xi-2H2]-labeled compound 10 was produced. This indicates that the reaction proceeds through