摘要
目的研究一株海洋放线菌Streptomyces sp.(No.30701)的化学成分。方法采用硅胶开放柱色谱、Sephadex LH-20凝胶柱色谱以及高效液相色谱等分离手段进行化合物的分离、纯化;利用理化性质和波谱学分析对单体化合物进行结构鉴定。结果从海洋放线菌Streptomyces sp.(No.30701)发酵物中分离得到9个环二肽类化合物,分别鉴定为环(L-脯-L-缬)二肽(1)、环(D-脯-L-缬)二肽(2)、环(L-脯-L-亮)二肽(3)、环(4-羟基-脯-亮)二肽(4)、环(L-脯-L-异亮)二肽(5)、环(L-脯-L-酪)二肽(6)、环(L-亮-L-缬)二肽(7)、环(D-苯丙-甘)二肽(8)、环(L-苯丙-L-缬)二肽(9)。结论以上化合物均为海洋放线菌常见的次生代谢产物,但化合物2、8含有天然界中不多见的D型氨基酸,并且化合物2是从链霉菌属放线菌中首次分离得到。
Aim To study the secondary metabolites of marine-derived actinomycete Streptomyces sp.(No.30701).Methods Various chromatographic and spectroscopic methods were applied for the isolation and structure identification of the compounds.Results Nine cyclicdipeptides were obtained from the Streptomyces sp.(No.30701) and their structures were identified as cyclo(L-ProL-Val)(1),cyclo(D-Pro-L-Val)(2),cyclo(L-Pro-L-Leu)(3),cyclo(4-hydroxyl-Pro-Leu)(4),cyclo(L-Pro-L-Ile)(5),cyclo(LPro-L-Tyr)(6),cyclo(L-Leu-L-Val)(7),cyclo(D-Phe-Gly)(8),and cyclo(L-Phe-L-Val)(9).Conclusion The nine compounds were common cyclicdipeptides from marine strains,but the existence of D-amino acids in compounds 2 and 8 was rare in nature,and compound 2 was isolated from Streptomyces sp.for the first time.
出处
《中国药物化学杂志》
CAS
CSCD
2010年第4期298-303,共6页
Chinese Journal of Medicinal Chemistry
基金
国家重点基础研究发展计划项目(973项目:2009CB522300/2009CB522302)
国家自然科学基金委员会-广东省人民政府联合基金项目(U0633008)
作者简介
作者简介:曾雪容(1983-),女(汉族),广东云浮人,硕士研究生,E-mail:zengxuerong3184@163.com;
通讯作者,姚新生(1934-),男(汉族),上海人,中国工程院院士,教授,博士生导师,主要从事天然产物化学研究,Tel:(020)85225849,E-mail:yaoxinsheng@vip.com.com.