Abstract:

Two new cyclic peptides, polycarponin B and C (1, 2), were isolated from the whole plants of Polycarpon prostratum (Forssk.) Aschers. et Schwein. ex Aschers. By detailed spectroscopic analysis, their structures were determined as cyclo(-Gly1 -Ile-Val1 -Leu1 -Val2 -Gly2 -Leu2 -Pro) and cyclo(-Pro1-Thr-Leu1- Pro2-Pro3-Val-Leu2-Phe), respectively.

多荚草中的新环肽
丁中涛1,2 " 周俊1*  谭宁华1 程永现1  邓世明1

（1.中国科学院昆明植物研究所植物化学开放实验室，昆明650204；2. 云南大学化学系，昆明560091）

摘要： 从石竹科植物多荚草(Polycarpon prostratum (Forssk.)Aschers. et Schwein. exAschers)中分离得到2个新的环肽化合物polycarponin B和C(1，2)。它们的结构通过波谱方法分别鉴定为：cyclo(-Gly1-Ile-Val1-Leu1-Val2-Gly2-Leu2-Pro)和cyclo(-Pro1-Thr-Leu1-Pro2-Pro3-Val-Leu2-Phe)。

关键词： 多荚草；石竹科；环肽；多荚草环肽

Key words: Polycarpon prostratum , Caryophyllaceae, cyclopeptide, polycarponin B and C