Six tetrahydroisoquinoline-monoterpene glucosides from Cephaelis ipecacuanha
作者:Atsuko Itoh、Takao Tanahashi、Naotaka Nagakura
DOI:10.1016/s0031-9422(00)98265-7
日期:1991.1
Abstract From the crude drug ‘Ipecac’ (dried root of Cephaelis ipecacuanha) six novel tetrahydroisoquinoline-monoterpene glucosides, 6-O-methylipecoside, ipecosidic acid, demethylalangiside, neoipecoside, 7-O-methyl-neoipecoside and 3,4-dehydroneoipecoside were isolated along with ipecoside, alangiside, sweroside and 7-dehydrologanin. The structures of new glucosides were determined by spectroscopic