Preparation of Ethylenedioxy Derivatives of Ketosteroids by Exchange Dioxolanation. An Improved Synthesis of Testosterone from Δ4-Androstene-3,17-dione1
13C NMR spectroscopy of 4,5- and 5,6-double bond isomers of spiro-3-steroidal ketone derivatives
作者:K.B. Sloan、N. Bodor、R.J. Little
DOI:10.1016/s0040-4020(01)98861-1
日期:1981.1
their optical rotations and 1H and 13C NMR spectra. The 13C NMR spectra of analogous ketals, hemithioketals and a thioketal of steroidal ketones were also reported, and 13C NMRspectroscopy was shown to be a convenient method of assigning the position of the double bond in the double bond isomers for all four of these derivatives. Finally, 13C NMRspectroscopy was found to be useful in determining that
基于氨基乙硫醇与α,β-不饱和甾族酮的反应获得的噻唑烷异构体基于它们的旋光度以及1 H和13 C NMR光谱被发现是双键位置异构体。的13类似的缩酮,hemithioketals和甾酮的酮缩硫醇的C NMR谱也报告,和13 C NMR光谱显示出对于这些所有四个分配在双键异构体的双键的位置的方便方法衍生品。最后,发现13 C NMR光谱可用于确定噻唑烷的形成是立体特异性的,仅给出一种C-3-异构体。
An Improved Method of Preparing Testosterone, Dihydrotestosterone and Some of their Esters