Further guaianolides and 5-alkylcoumarins from gutenbergia and bothriocline species
作者:J. Jakupovic、R. Boeker、A. Schuster、F. Bohlmann、S.B. Jones
DOI:10.1016/s0031-9422(00)82352-3
日期:1987.1
Abstract From Gutenbergia marginata ten new guaianolides were isolated. Two guaianolides isolated previously from Erlangea inyangana are identical with two further lactones and their structures have been revised. From Bothriocline ripensis ethulia coumarin and two further 5-alkylcoumarin derivatives, one being a chromone, were isolated, while B. longipes and B. eupatorioides gave nine 5-alkylcoumarins
摘要 从 Gutenbergia marginata 中分离到了 10 个新的愈创木酚内酯。先前从 Erlangea inyangana 中分离出的两种愈创木酚内酯与另外两种内酯相同,并且它们的结构已经过修改。从 Bothriocline ripensis ethulia 香豆素和另外两种 5-烷基香豆素衍生物(一种是色酮)中分离出来,而 B. longipes 和 B. eupatorioides 得到九种 5-烷基香豆素和两种相关化合物。通过高场核磁共振技术和一些化学转化阐明了结构。