Two new saponins from Zygophyllum atriplicoides.
Phytochemicals investigation of the whole plant of Zygophyllum atriplicoides resulted in the isolation of two new triterpenoidal saponins together with a known compound. The structure of the new compounds atriplicosaponin A (1) and atriplicosaponin B (2) were established as 3-O-[alpha-D-glucopyranosyl-(1-->2)-beta-D-xylopyranosyl]-hederagenin and 27 alpha-hydroxyurs-12-ene-3-O-[beta-D-glucopyranosyl(1-->4)(2-O-sulpho)-beta-D-quinovopyranoside] and known compound was identified as 3-O-[beta-D-glucopyranosyl]-beta-sitosterol. The structure elucidations of the compounds were based primarily on 1D and 2D-NMR analysis, including COSY, HMBC and HMQC correlations.
Ahmad
Viqar Uddin
VU
HEJ Research Institute of Chemistry, International Center for Chemical Sciences, University of Karachi; 75270 Karachi, Pakistan. vuahmad@cyber.net.pr
Iqbal
Shazia
S
Kousar
Farzana
F
Bader
Sadia
S
Arshad
Saima
S
Tareen
Rasool Bakhsh
RB
D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D002855:Chromatography, Thin Layer; D006868:Hydrolysis; D009682:Magnetic Resonance Spectroscopy; D008969:Molecular Sequence Data; D010936:Plant Extracts / Q000737:chemistry; D012503:Saponins / Q000737:chemistry* / Q000302:isolation & purification; D016339:Spectrometry, Mass, Fast Atom Bombardment; D013056:Spectrophotometry, Ultraviolet; D032445:Zygophyllum / Q000737:chemistry*
D010936:Plant Extracts; D012503:Saponins; C505009:atriplicosaponin A; C505008:atriplicosaponin B