Podacycline A and B, two cyclic peptides in the latex of Jatropha podagrica

Phytochemistry
1996.0

Abstract

Two novel cyclic peptides were isolated from the latex of Jatropha podagrica, which we named podacycline A and B. Podacycline A is a cyclic nonapeptide with the sequence Gly1-Leu2-Leu3-Gly4-Ala5-Val6-Trp7-Ala8-Gly9+ ++-Gly1. The sequence of podacycline B, a cyclic heptapeptide, was determined to be Phe1-Ala2-Gly3-Thr4-Ile5-Phe6-Gly7-Phe1. The amino acid residues of both compounds were found to have the L-configuration.

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