title: Partially acetylated tri- and tetrarhamnoside dodecanyl ether derivatives from Cleistopholis patens.
abstract: Three new partially acetylated derivatives of 1-O-dodecanyl-alpha-L- rhamnopyranosyl-(1-->3)-alpha-L-rhamnopyranosyl-(1-->3)-alpha-L- rhamnopyranoside and three partially acetylated derivatives of 1-O-dodecanyl-alpha-L-rhamnopyranosyl-(1-->3)- alpha-L-rhamnopyranosyl-(1-->3)-alpha-L-rhamnopyranosyl-(1-->4)- alpha-L-rhamnopyranoside, one of them new, have been isolated from the mature leaves of Cleistopholis patens (Annonaceae). Their structures, elucidated by using COSY, COSY-LR, TOCSY and FAB mass spectrometry, have been characterised as cleistrioside-2, -3, -4 and cleistetroside-1, -2 and -6. From the same source, shikimic acid was also isolated.
authors.affiliation: Department of Pharmaceutical Sciences, University of Strathclyde, Glasgow, UK.
authors.forename: V
authors.initials: V
authors.lastname: Seidel
authors.forename: F
authors.initials: F
authors.lastname: Bailleul
authors.forename: P G
authors.initials: PG
authors.lastname: Waterman
mesh_terms: D000107:Acetylation; D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D004987:Ethers; D006027:Glycosides / Q000737:chemistry / Q000302:isolation & purification*; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D010944:Plants / Q000737:chemistry*; D012210:Rhamnose / Q000737:chemistry; D016339:Spectrometry, Mass, Fast Atom Bombardment
chemical_list: D004987:Ethers; D006027:Glycosides; D012210:Rhamnose