【摘要】 目的 :对金铁锁中的环肽成分进行系列研究。方法 :利用柱层析进行化合物的分离 ,用波谱法鉴定其结构。结果 :从其丙酮溶解部分分离得到 3个环二肽 ,其结构分别为环 (脯 缬 ) (1 )、环 (脯 丙 ) (2 )和环 (脯 脯 ) (3)。结论 :化合物 1和 2为新的天然产物 ,化合物 3为首次从金铁锁中得到更多还原

【Abstract】 Objective: To study the cyclic peptides from Psammosilene tunicoides . Method: The constituents were separated and purified with chromatographic methods, identified by NMR, MS, UV and IR. Result: Three cyclic dipeptides: cyclo( Pro Val ) (1), cyclo( Pro Ala ) (2) and cyclo( Pro Pro ) (3), were isolated and identified. Conclusion: Compound 1 and 2 are new natural products, compound 3 was isolated for the first time from Psammosilene tunicoides.[更多还原