Isolation and structure of cyclosenegalins A and B, novel cyclopeptides from the seeds of Annona senegalensis
Abstract
Two new cyclopeptides, cyclosenegalin A, cyclo(Pro1-Gly2-Leu3-Ser4-Ala5-Val6-Thr7-)
(1) and cyclosenegalin B, cyclo(Pro1-Gly2-Tyr3-Val4-Tyr5-Pro6-Pro7-Val8-)
(2), have been isolated from the