H. Morita et al., CYCLIC-PEPTIDES FROM HIGHER-PLANTS .15. PSEUDOSTELLARIN-H, A NEW CYCLIC OCTAPEPTIDE FROM PSEUDOSTELLARIA-HETEROPHYLLA, Journal of natural products, 58(6), 1995, pp. 943-947
A new cyclic octapeptide, pseudostellarin H [1], was isolated from the
roots of Pseudostellaria heterophylla. Based on spectral evidence and
chemical degradation, the primary structure of 1 was established as c
yclo(Gly-Thr-Pro-Thr-Pro-Leu-Phe-Phe).