Partially acetylated tri- and tetrarhamnoside dodecanyl ether derivatives from Cleistopholis patens.
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.
Seidel
V
V
Department of Pharmaceutical Sciences, University of Strathclyde, Glasgow, UK.
Bailleul
F
F
Waterman
P G
PG
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
D004987:Ethers; D006027:Glycosides; D012210:Rhamnose