天然产物研究与开发 ›› 2019, Vol. 31 ›› Issue (10): 1764-1771.doi: 10.16333/j.1001-6880.2019.10.014

• 研究简报 • 上一篇    下一篇

土壤链霉菌KIB-K1次级代谢产物中大环内酯及其抗菌活性研究

王磊1,余志银2,徐冬冬2,赵晨3,黄胜雄2*,马亚团1*   

  1. 1 西北农林科技大学化学与药学院,杨凌 712100;2 中国科学院昆明植物研究所 植物化学与西部植物资源持续利用国家重点实验室,昆明 650201;3 西北农林科技大学植物保护学院,杨凌 712100
  • 出版日期:2019-10-28 发布日期:2019-11-11
  • 基金资助:

    云南省自然科学基金面上项目(2016FB021);科技扶贫(Z2220219001);科技扶贫(Z2220219003)

Macrolides from soil-derived Streptomyces sp.KIB-K1 and their antimicrobial activities

WANG Lei1,YU Zhi-yin2,XU Dong-dong2,ZHAO Chen3,HUANG Sheng-xiong2*,MA Ya-tuan1*   

  1. 1 College of Chemistry and Pharmacy, Northwest Agriculture and Forestry University, Yangling 712100,China;2 State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Instituteof Botany,Chinese Academy of Sciences,Kunming 650201,China; 3 College of Plant Protection,Agriculture and Forestry University,Yangling 712100,China
  • Online:2019-10-28 Published:2019-11-11

摘要: 为研究土壤链霉菌Streptomyces sp.KIB-K1次级代谢产物成分。实验采用硅胶、凝胶及半制备高效液相等分离方法,从该菌株发酵液中共分离得到7个大环内酯类化合物,通过解析NMR、MS等波谱数据,化合物的结构鉴定为aldgamycin P(1)、aldgamycin E(2)、aldgamycin J(3)、aldgamycin K(4)、aldgamycin L(5)、GERI-155(6)和chalcomycin (7),其中化合物1为新化合物。抗菌实验结果显示,化合物1~7对金黄色葡萄球菌和枯草芽孢杆菌有显著的抑制作用。其中,化合物1对金黄色葡萄球菌的最小抑菌浓度(MIC)为7.81 μg/mL,化合物2和7对金黄色葡萄球菌的MIC值分别为0.49和0.98 μg/mL,高于阳性对照卡那霉素的MIC值(3.91 μg/mL)。化合物1~7对于被测试的两株真菌小麦赤霉病菌和玉米小斑病菌没有表现出抑制作用。

关键词: 链霉菌, 次级代谢产物, 大环内酯, 抑菌活性, aldgamycin P

Abstract: The secondary metabolites of soil Streptomyces sp.KIB-K1 were investigated.Seven macrolides were isolated by the means of various chromatography methods,such as silica gel column,Sephadex LH-20 column and pre-HPLC,from the fermentation broth of Streptomyces sp. KIB-K1.Their structures were identified as aldgamycin E (2),aldgamycin J (3),aldgamycin K (4),aldgamycin L (5),GERI-155 (6),chalcomycin (7) and a new compound,aldgamycin P (1),by analyzing the NMR and Mass data.The result of antibacterial test showed that these macrolides exhibited significant inhibitory effect against Staphylococcus aureus ATCC 6538 and Bacillus subtilisATCC 6633.The minimal inhibit concentration (MIC) of aldgamycin P (1) to S.aureuswas 7.81 μg/mL.The MIC of compounds 2 and 7 to S. aureus were 0.49 and 0.98 μg/mL,respectively,which was higher than that of positive control kanamycin with MIC of 3.91 μg/mL.However,compounds 1-7 showed no inhibitory effect against two pathomycetes of plant,Gibberella zeae and Helminthosporium maydis Nisik & Miy.

Key words: Streptomyces, secondary metabolites, macrolides, antibacterial activities, aldgamycin P

中图分类号: 

R914.4