Studies on the constituents of the seeds of Cassia obtusifolia: The structures of two new lactones, isotoralactone and cassialactone
作者:Susumu Kitanaka、Michio Takido
DOI:10.1016/0031-9422(81)84042-3
日期:1981.1
Abstract Torosachrysone and two new naphthalenic lactones, isotoralactone and cassialactone, were isolated from the seeds of Cassia obtusifolia. Their structures were established as 9,10-dihydroxy-7-methoxy-3-methylene-1H-naphtho(2,3-c)dihydropyrone-1-one and 8-methoxy-4-methyl-1-oxo-4,10,11-trihydroxy-naphtho(2,3-c)oxepin, respectively.
摘要 从钝叶决明子(Cassia obtusifolia) 的种子中分离得到牛角草酮和两种新的萘内酯异戊内酯和肉桂内酯。它们的结构被确定为 9,10-dihydroxy-7-methoxy-3-methylene-1H-naphtho(2,3-c)dihydropyrone-1-one 和 8-methoxy-4-methyl-1-oxo-4,10 ,11-三羟基-萘并(2,3-c)oxepin,分别。