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Complete NMR data assignments for novel pterocarpans from Harpalyce brasiliana
Author(s) -
Araújo Renata Mendonça,
Pinheiro Sávio Moita,
Lima Mary Anne Sousa,
Silveira Edilberto Rocha
Publication year - 2008
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.2269
Subject(s) - chemistry , heteronuclear single quantum coherence spectroscopy , chemical shift , two dimensional nuclear magnetic resonance spectroscopy , carbon 13 nmr , proton nmr , stereochemistry
A NMR study of two new pterocarpans isolated from the roots of Harpalyce brasiliana is described. In addition to 1D NMR, 2D shift‐correlated NMR pulse sequences ( 1 H 1 H‐COSY, HSQC and HMBC) were used to establish the structures, and unambiguously perform the 1 H and 13 C chemical shift assignments. Copyright © 2008 John Wiley & Sons, Ltd.