Mass Spectral Fragmentation of 24,24-Diphenyl-23-ene Derivatives of Cholic Acid
作者:Jerry Ray Dias
DOI:10.1002/jps.2600710305
日期:1982.3
After electron impact in the mass spectrometer, 24,24-diphenyl-23-ene derivatives of cholicacid ejected the 17-sidechain as an ionized 1,1-diphenyl-butadiene derivative, and the 12 alpha-acetoxy group activated this loss. This contrasts markedly with the mass spectrometric fragmentation of typical sterols having unsaturated 17-sidechains that are also devoid of functionality on the C-ring.