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Published on: January 26, 2016
Integerrimides A and B, cyclic heptapeptides from the latex of Jatropha integerrima
Wantana Mongkolvisut1, Somyote Sutthivaiyakit, Heiko Leutbecher
1Department of Chemistry, Faculty of Science, Ramkhamhaeng University, Bangkok 10240, Thailand.
Abstract:
Two new cyclic heptapeptides, integerrimides A and B, have been isolated from the latex of Jatropha integerrima. Their structures were elucidated by using extensive 1D and 2D NMR, MS, and chemical degradation. At 50 microM both peptides 1 and 2 significantly inhibited neurite outgrowth in neuronal cell culture. They also partially inhibited proliferation of human IPC-298 melanoma cells as well as migration of human Capan II pancreatic carcinoma cells, but were inactive in HSV-1, antifungal, and antimalarial assays.
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