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Stephanotic acid, a novel cyclic pentapeptide from the stem of Stephanotis floribunda
K Yoshikawa1, S Tao, S Arihara
1Faculty of Pharmaceutical Sciences, Tokushima Bunri University, Tokushima 770-8514, Japan. yosikawa@ph.bunri-u.ac.jp
Journal of Natural Products
|April 29, 2000
Abstract:
The stem of Stephanotis floribunda afforded a new cyclic pentapeptide stephanotic acid (1), possessing a novel 6-(leucin-3'-yl) tryptophan skeleton. The structure of 1 was assigned on the basis of extensive NMR experiments and a chemical reaction and shown to be closely related to the bicyclic octapeptide moroidin (3), a toxin from Laportea moroides.