H. Morita et al., CYCLIC-PEPTIDES FROM HIGHER-PLANTS .24. YUNNANIN-C, A NOVEL CYCLIC HEPTAPEPTIDE FROM STELLARIA-YUNNANENSIS, Journal of natural products, 59(3), 1996, pp. 280-282
A novel cytotoxic cyclic heptapeptide, yunnanin C (1), was isolated fr
om the roots of Stellaria yunnanensis. The structure of 1, cyclo(-Gly-
Ile-Gly-Phe-Tyl-Ser-Pro-), was elucidated from spectroscopic evidence
and by chemical degradation.