A new heterocyclic glucoside from the fruits of Xanthium pungens.
A new thiazinedione glucoside, 7-(beta-D-glucopyranosyloxymethyl)-8,8-dimethyl-4,8-dihydrobenzo[1,4]thiazine-3,5-dione (1) and named xanthiside, was isolated from the methanol extract of the fruits of Xanthium pungens. Its structure was determined by spectroscopic techniques including, IR, CIMS, high-resolution-EIMS, and extensive 400 MHz one- and two-dimensional NMR-analysis (1H, 13C-NMR, DEPT, 1H-1H COSY, HMQC, COLOC, and NOE experiments).
Mahmoud
Ahmed A
AA
Department of Chemistry, Faculty of Science, El-Minia University, El-Minia 61519, Egypt. amahmoud64@yahoo.com
Ahmed
Ahmed A
AA
Al-Shihry
Shar S
SS
Spring
Otmar
O
D002623:Chemistry Techniques, Analytical; D005638:Fruit / Q000737:chemistry; D005960:Glucosides / Q000737:chemistry* / Q000302:isolation & purification*; D013843:Thiazines / Q000737:chemistry* / Q000302:isolation & purification*; D031210:Xanthium / Q000737:chemistry*
C504146:7-(beta-D-glucopyranosyloxymethyl)-8,8-dimethyl-4,8-dihydrobenzo(1,4)thiazine-3,5-dione; D005960:Glucosides; D013843:Thiazines