Kawasaki, Yakugaku Zasshi/Journal of the Pharmaceutical Society of Japan, 1936, vol. 56, p. 896,898; dtsch. Ref. S. 167
作者:Kawasaki
DOI:——
日期:——
DAVE, V.;STOTHERS, J. B.;WARNHOFF, E. W., CAN. J. CHEM., 1984, 62, N 10, 1965-1970
作者:DAVE, V.、STOTHERS, J. B.、WARNHOFF, E. W.
DOI:——
日期:——
The contraction of ring a in 5α-cholestane derivatives
作者:B. Fuchs、H.J.E. Loewenthal
DOI:10.1016/0040-4020(60)80070-1
日期:1960.1
The β-keto-ester which is obtained by Dieckmann cyclization of the dimethyl ester (I) of the dicarboxylic acid obtained by oxidative opening of ring A in 5α-cholestan-3-one and related compounds has been shown to have the structure IIa, by its degradation, via the unsaturated acid (Va), to A-nor-5β-cholestan-3-one (VI) and to the dimethyl ester (VIIb). The stereochemistry of compound IIa and of related