Abstract: In the previous papers, we have reported the isolation and structural elucidation of seven new cyclopeptides (stellarin A-G). Further chemical study on this plant resulted in the isolation of another new cyclopeptide, namely stellarin H(l). Its structure was established to be cycle (Phe-Ser-Leu-Val-Leu-Pro-Pro-Tyr-Ser) on the basis of the spectral and chemical methods. In adition, a known cyclic pentapeptide, pseudostellarin A, was isolated.

Key words: Stellaria yunnanensis

摘要： 从云南民间药物千针万线草（Stellaria yunnanensis）的新鲜根中又得到二个环肽成分，其中1个为新环肽，命名为千针万线草环肽H（stellarin H）。经光谱技术及化学方法证明其结构为cyclo（Phe－Ser－Leu－Val－Leu－Pro－Pro－Tyr－Ser），另一为一已知的环肽化合物(pseudostellarin A)。

关键词: 千针万线草, 石竹科, 环肽, 千针万线草环肚 H, Pseudostellarin A