Mass spectrometry in structural and stereochemical problems—LVI
作者:Robert H. Shapiro、Carl Djerassi
DOI:10.1016/s0040-4020(01)98470-4
日期:1964.1
Upon electron impact, 4,4-dimethyl-5α-androstan-3-one decomposes into two major fragment ions appearing in the mass spectrum at m/e 175 and 216. From the spectra of several deuterated analogs of the parent ketone, both ions were shown to be hydrocarbon fragments resulting from extremely complex processes which are not susceptible to ready interpretation by the conventional principles of physical-organic
Abad,A. et al., Bulletin de la Societe Chimique de France, 1969, p. 1236 - 1244
作者:Abad,A. et al.
DOI:——
日期:——
The chemistry of triterpenes and related compounds. Part XLV. The acid-catalysed rearrangements of the 5α,6α-diols and 5,6-epoxides of some 4,4-dimethylsteroids
作者:T. G. Halsall、Ewart R. H. Jones、E. L. Tan、G. R. Chaudhry
DOI:10.1039/j39660001374
日期:——
A number of 5,6-diols and -epoxides in the 4,4-dimethyl-chlolestane and -androstane series have been prepared and their reactions under acidic conditions studied. Different products are obtained from the diols and the epoxides and, as expected, the type of oxygen function at C-3 influences the nature of the products formed.