Lignan, phenolic and iridoid glycosides from Stereospermum cylindricum.
A lignan glycoside [(+)-cycloolivil 4'-O-beta-d-glucopyranoside], a phenolic glycoside [3,4-dimethoxyphenyl 1-O-beta-d-xylopyranosyl-(1-->6)-beta-d-glucopyranoside] and a iridoid glycoside (stereospermoside) were isolated from the leaves and branches of Stereospermum cylindricum, together with (+)-cycloolivil, (+)-cycloolivil 6-O-beta-d-glucopyranoside, (-)-olivil, (-)-olivil 4-O-beta-d-glucopyranoside, (-)-olivil 4'-O-beta-d-glucopyranoside, vanilloloside, decaffeoyl-verbascoside, isoverbascoside, 3,4,5-trimethoxyphenyl 1-O-beta-d-xylopyranosyl-(1-->6)-beta-d-glucopyranoside, ajugol, verminoside, and specioside. The structure elucidations were based on spectroscopic evidence.
Kanchanapoom
Tripetch
T
Department of Pharmaceutical Botany and Pharmacognosy, Faculty of Pharmaceutical Sciences, Khon Kaen University, Khon Kaen 40002, Thailand. trikan@kku.ac.th
Noiarsa
Pawadee
P
Otsuka
Hideaki
H
Ruchirawat
Somsak
S
D029402:Bignoniaceae / Q000737:chemistry* / Q000145:classification; D006027:Glycosides / Q000737:chemistry* / Q000302:isolation & purification; D039823:Iridoids / Q000737:chemistry* / Q000302:isolation & purification; D017705:Lignans / Q000737:chemistry* / Q000302:isolation & purification; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D010636:Phenols / Q000737:chemistry* / Q000302:isolation & purification
D006027:Glycosides; D039823:Iridoids; D017705:Lignans; D010636:Phenols