ISSN:
0075-4617
Keywords:
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
NMR-Spectroscopic Studies of Acyl GlycosesA NMR spectroscopical study of the p-cumaroyl-D-glucoses (1a-e), p-hydroxybenzoyl-D-glucose (2a-e), as well as of the p-cumaroyl-L-rhamnoses (3 and 4) and 5-p-cumaroyl-D-xylofuranose (5) was carried out (table 1). The configuration and conformation, and in the case of the 1-, 2-and 6-acyl-glucoses as well as of 4-p-cumaroyl-α-methyl-L-rhamnopyranoside (4) also the position of the acyl group, have been established. With the aid of synthetic sugar esters the structure of neobignonoside, neopetunoside, and negretein could be determined.
Notes:
Aus den NMR-Spektren von p-Cumaroyl- (1a-e), p-Hydroxy-benzoyl-D-glucosen (2a-e) sowie p-Cumaroyl-L-rhamnosen (3 und 4) und 5-p-Cumaroyl-D-xylofuranose (5) (Tab. 1) werden die Konformation, Konfiguration und im Falle der 1-, 2- und 6-Acylglucosen- sowie des 4-p-Cumaroyl-α-methyl-L-rhamnopyranosids (4) die Stellung des jeweiligen Acyl-Restes ermittelt. Mit Hilfe der synthetischen Zuckerester konnte die Struktur von Neobignonosid, Neopetunosid und Negretein geklärt werden.
Additional Material:
1 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/jlac.19697250122
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