ISSN:
0018-019X
Keywords:
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
A new saponin, O-α-D-arabinopyranosyl-(1→6)-O-[α-L-rhamnopyranosyl-(1→2)]-O-[β-D-xylopyranosyl-(1→3)]-β-D-glucopyranosyl arjunolate (1) was isolated from the flowers of Heteropappus biennis (LDB.) TAMAMSCH. The structure was established mainly by a combination of 1D selective and 2D NMR techniques like COSY, TOCSY, ROESY, HMQC, and HMBC. Molecular-modelling calculations showed that the oligosaccharide chain is rather rigid. Six minimum structures are discussed.
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/hlca.19940770717
Permalink