H-1-NMR AND C-13-NMR ASSIGNMENTS FOR SOME PYRROLO[2,1B]-QUINAZOLINE ALKALOIDS OF ADHATODA-VASICA

Citation
Bs. Joshi et al., H-1-NMR AND C-13-NMR ASSIGNMENTS FOR SOME PYRROLO[2,1B]-QUINAZOLINE ALKALOIDS OF ADHATODA-VASICA, Journal of natural products, 57(7), 1994, pp. 953-962
Citations number
29
Categorie Soggetti
Chemistry,"Plant Sciences","Pharmacology & Pharmacy
Journal title
ISSN journal
01633864
Volume
57
Issue
7
Year of publication
1994
Pages
953 - 962
Database
ISI
SICI code
0163-3864(1994)57:7<953:HACAFS>2.0.ZU;2-B
Abstract
From the leaves of Adhatoda vasica, the pyrrolo[2,1b]quinazoline alkal oids l-vasicine [1], l-vasicinone [2], l-vasicol [3], anisotine [7], 3 -hydroxyanisotine [8], and a new alkaloid, vasnetine [9] have been iso lated and their structures established by H-1- and C-13-nmr spectral s tudies. The chemical shift assignments for these alkaloids were confir med by H-1 homonuclear COSY, DEFT, HETCOR, selective INEPT and HMBC nm r experiments.