title: Two cangorosin A type triterpene dimers from Maytenus chuchuhuasca.
abstract: Two new cangorosin A type triterpene dimers, which composed of two triterpene units jointed by two ether linkages between the A and B rings, were isolated from the Brazilian medicinal plant "xuxuá" (Maytenus chuchuhuasca). Structures of new isolates, xuxuasins A (1) and B (2), were established based on several spectroscopic evidences.
authors.affiliation: Division of Pharmacognosy, Phytochemistry and Narcotics, National Institute of Health Sciences, Setagaya-ku, Tokyo 158-8501, Japan. shirota@nihs.go.jp
authors.forename: Osamu
authors.initials: O
authors.lastname: Shirota
authors.forename: Setsuko
authors.initials: S
authors.lastname: Sekita
authors.forename: Motoyoshi
authors.initials: M
authors.lastname: Satake
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Morita
authors.forename: Koichi
authors.initials: K
authors.lastname: Takeya
authors.forename: Hideji
authors.initials: H
authors.lastname: Itokawa
mesh_terms: D029755:Maytenus / Q000737:chemistry*; D015394:Molecular Structure; D014315:Triterpenes / Q000737:chemistry*
chemical_list: D014315:Triterpenes; C496433:xuxuasin A; C496434:xuxuasin B