PROANTHOCYANIDINS FROM STEM BARK OF PAVETTA-OWARIENSIS .3. NMR-STUDY OF ACETYLATED TRIMERIC PROANTHOCYANIDINS POSSESSING A DOUBLY-LINKED STRUCTURE

Authors
BALDE AM DEBRUYNE T PIETERS L CLAEYS M VANDENBERGHE D VLIETINCK A WRAY V KOLODZIEJ H
Citation
Am. Balde et al., PROANTHOCYANIDINS FROM STEM BARK OF PAVETTA-OWARIENSIS .3. NMR-STUDY OF ACETYLATED TRIMERIC PROANTHOCYANIDINS POSSESSING A DOUBLY-LINKED STRUCTURE, Journal of natural products, 56(7), 1993, pp. 1078-1088
Citations number
17
Categorie Soggetti
Chemistry,"Plant Sciences","Pharmacology & Pharmacy
Journal title
Journal of natural products → ACNP
ISSN journal
01633864
Volume
56
Issue
7
Year of publication
1993
Pages
1078 - 1088
Database
ISI
SICI code
0163-3864(1993)56:7<1078:PFSBOP>2.0.ZU;2-I
Abstract
The H-1- and C-13-nmr chemical shifts of the acetylated trimeric proan thocyanidins of Pavetta owariensis, possessing a doubly-linked structu re, have been assigned by 2D and proton decoupling nmr experiments. Pa vetannin B4, a new trimer, has been identified as epicatechin-(4beta-- >6, a-->O-->7)-ent-epicatechin-(4beta-->8)-epicatechin 5! by spectros copic analysis of its acetate.