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Dehydropinguisanin,dehydropinguisenol and pinguisenal,three pinguisane-type sesquiterpenes from Trocholejeunea sandvicensis
Authors:Yoshinori Asakawa  Masao Toyota  Masako Kano  Tsunematsu Takemoto
Institution:Institute of Pharmacognosy, Tokushima-Bunri University, Yamashiro-cho, 770 Tokushima, Japan
Abstract:Three new pinguisane-type sesquiterpenes, dehydropinguisanin, dehydropinguisenol and pinguisenal together with the previously known deoxopinguisone, pinguisanin, pinguisanolide and (—)-bicyclogermacrene, have been isolated from the liverwort, Trocholejeunea sandvicensis, and their structures have been established from spectral evidence.
Keywords:Lejeunaeceae  Hepaticae  dehydropinguisanin  dehydropinguisenol  pinguisenal  pinguisane-type sesquiterpenes  
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