Mass spectrometry of ring D hydroxylated 3-methoxy-1,3,5(10)-estratrienes
摘要:
Mass spectra and fragmentation patterns of the epimeric 17-, 16-, 15- and 14-hydroxy derivatives of 3-methoxy-1,3,5(10)-estratriene are compared. The main fragmentation pathways are differently influenced, depending on the position of the hydroxy group. The different configuration of the hydroxy groups is reflected only in the spectra of the epimeric 15- and 14-hydroxy compounds. Possibilities of mass spectrometric differentiation between the hydroxy-estratrienes are discussed.
Synthesis and 14-methylation of 3-methoxy-14β-estra-1,3,5(10),8-tetraen-15-one
作者:James R. Bull、Jan Floor
DOI:10.1039/c39800000270
日期:——
The preparation of 3-methoxy-14β-estra-1,3,5-(10),8-tetraen-15-one is described, base-catalysed methylation of which compound affords the corrsponding 14α- and 14β-methyl compounds in a ratio of ca. 5 : 1.