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Cyclopurpuracin, a cyclopeptide from Annona purpurea seeds

Author:
González-Tepale, María Rosa, Reyes, Lino, Mayorga-Flores, Marlen, Reyes-Trejo, Benito, Gómez-Zepeda, David, Rio-Portilla, Federico del, Ordaz-Ortiz, José Juan, Herbert-Pucheta, José Enrique
Source:
Phytochemistry letters 2018 v.23 pp. 164-167
ISSN:
1874-3900
Subject:
Annona, carbon, nuclear magnetic resonance spectroscopy, seeds, stable isotopes
Abstract:
From a 60% hydroalcoholic extract of the seeds of Annona purpurea, a novel cyclooctapeptide, cyclopurpuracin (1), or cyclo(-Pro1-Gly2-Phe3-ILe4-Gly5-Ser6-Pro7-Val8-), has been isolated. The structure of cyclopurpuracin (1) was determined by de novo sequencing based on MS/MS spectra and 1D and 2D NMR techniques (1H, 13C, HSQC, HMBC, COSY and ROESY).
Agid:
5915522