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A new cyclic octapeptide (schnabepeptide B) was isolated from the aerial part of Schnabelia tetradonta (Sun) C. Y. Wu et C. Chen (Lamiaceae). Its structure was elucidated as cyclo-(NH-Trp-Gly1-Leu1-Gly2-Pro1-Pro2-Leu2-Pro3-CO) on the basis of extensive 2D NMR and MS spectra.
A new cyclic octapeptide (schnabepeptide B) was isolated from the aerial part of Schnabelia tetradonta (Sun) CY Wu et C. Chen (Lamiaceae). Its structure was elucidated as cyclo- (NH-Trp- Gly1- Leu1- Gly2- Pro1- Pro2-Leu2-Pro3-CO) on the basis of 2D NMR and MS spectra.