Infraspecific Variation of Sulfur-Containing Bisamides from Aglaia leptantha
- 31 March 2000
- journal article
- review article
- Published by American Chemical Society (ACS) in Journal of Natural Products
- Vol. 63 (5) , 616-620
- https://doi.org/10.1021/np990542y
Abstract
Six new amides, leptaglin (1), hemileptaglin (2), aglanthin (3), agleptin (4), isoagleptin (5), and leptanthin (6), together with known lignans yangambin, eudesmin, grandisin (7), epigrandisin (8), and dehydrodiconiferyl alcohol, were isolated and identified from the lipophilic leaf and stem bark extracts of Aglaia leptantha. The dominating sulfur-containing bisamides contained either putrescine or the corresponding pyrrolidine ring as the diamine part, linked to phenylacetic and/or methylthiopropenoic acid moieties showing a remarkable infraspecific variation in eight individuals from two different habitats. Structures were determined by MS and NMR, including lanthanide-induced shifts.Keywords
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