文章基本信息

标题：13C-NMR and mass spectral data of steroids with a 17,17-dialkyl-18-nor-13(14)-ene substructure.
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作者：V I De Brabandere ; L M Thienpont ; D Stöckl 等
期刊名称：JLR Papers In Press
印刷版ISSN：0022-2275
电子版ISSN：1539-7262
出版年度：1997
卷号：38
期号：4
页码：780-789
语种：English
出版社：American Society for Biochemistry and Molecular Biology
摘要：We present carbon-13 nuclear magnetic resonance (13C-NMR) and mass spectral data for several androstanes and estranes having a 17,17-dialkyl-18-nor-13(14)-ene substructure. These compounds are formed by a Wagner-Meerwein rearrangement of steroids bearing a tertiary 17-hydroxy group during the derivatization reaction with heptafluorobutyric anhydride. The 13C-NMR assignments are compared with those of natural products having a similar substructure. The mass spectra show characteristic fragment ions for which a fragmentation mechanism is proposed.