11,13-Dehydroeriolin, schkuhrioidin and schkuhriolid, germacranolides from Schkuhria species
作者:A. Romo de Vivar、C. A.L. Pérez、N. C. León、G. Delgado
DOI:10.1016/0031-9422(80)85065-5
日期:1980.1
Abstract The isolation is reported of the new germacrolide, 11,13-dehydroeriolin, the new melampolide schkuhrioidin and schkuhriolide from Schkuhria schkuhrioides . 11,13-Dehydroeriolin is also a constituent of S. virgata . The structure and stereochemistry of the new compounds were established on chemical and spectroscopic grounds.
摘要 报道了从Schkuhria schkuhrioides 中分离出新的germacrolide、11,13-dehydroeriolin、新的melampolide schkuhriooidin 和schkuhriolide。11,13-Dehydroeriolin 也是 S. virgata 的成分。新化合物的结构和立体化学是在化学和光谱学基础上确定的。
Acid-induced rearrangements of the melampolide schkuhriolide. An alternative approach to the oplopane skeleton
作者:Guillermo Delgado、Salvador Guzmán
DOI:10.1039/c39920000606
日期:——
The acid catalysed transformation of the melampolide schkuhriolide 1 provided a mixture of epimers and the oplopanolide 5via sequential rearrangements.
The novel melampolides (11R)-11,13-dihydro-schkuhriolide (7), (11S)-11,13-dihydro-schkuhriolide (8), and schkuhrioidiol (11), along with the known constituents, frutescin (1), schkuhriolide (2), frutescinic acid (4), allo-schkuhriolide (5), and epoxyschkuhriolide (6) were isolated from the aerial parts of Schkuhria schkuhrioides. The structures of the new compounds were determined by spectroscopic