Total synthesis of (±)-(Z)-9-(bromomethylene)-1,5,5-trimethylspiro[5.5]undeca-1,7-dien-3-one, a brominated sesquiterpene of the chamigrane type
作者:Haruki Niwa、Yoshifumi Yoshida、Takashi Hasegawa、Kiyoyuki Yamada
DOI:10.1016/s0040-4020(01)96126-5
日期:——
(+/-)-(Z)-9-(Bromomethylene)-1,5,5-trimethylspirol[5.5]undeca-1,7-dien-3-one (1), a chamigrane sesquiterpene having a novel bromomethylene group is synthesized from anisole via spiroannelation of 4-(1,1-dimethyl-4-formylbutyl)-3-cyclohexen-1-one (10).
(+/-)-(Z)-9-(溴甲基)-1,5,5-三甲基螺[5.5]十一-1,7-二烯-3-酮 (1),是一种含有新颖溴甲基取代基的chamigrane倍半萜,通过4-(1,1-二甲基-4-醛基丁基)-3-环己烯-1-酮 (10) 的螺环化反应从茴香醚合成得到。