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Pohlianins A, B and C, cyclic peptides from the laxes of Jatropha pohliana ssp. molissima

✍ Scribed by Catherine Auvin-Guette; Carine Baraguey; Alain Blond; Haroudo S. Xavier; Jean-Louis Pousset; Bernard Bodo

Publisher: Elsevier Science
Year: 1999
Tongue: French
Weight: 680 KB
Volume: 55
Category: Article
ISSN: 0040-4020
DOI: 10.1016/s0040-4020(99)00660-2

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✦ Synopsis

From the EtOAc extract of the latex of Jatropha pohliana (Euphorbiaceae), two cyclic heptapeptides, pohlianins A (I) and B (2) and one cyclic octapeptide, pohlianin C (3) were isolated by a multi-step chromatography procedure,, including HPLC. Their structure were elucidated by chemical degradation, mass spectrometry, homonuclear and heteronuclear NMR experiments. Conformational analysis of these peptides was made by using NMR experiments and distance geometry calculations. Their antimalarial activities were examined.

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