广藿香内生真菌Diaporthe longicolla A616细胞毒活性次级代谢产物研究  被引量:12

Study on cytotoxic secondary metabolites of endophytic fungus Diaporthe longicolla A616 from Pogostemon cablin

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作  者:王沫[1,2] 陈玉婵[1] 孙章华[1] 谭国慧 李浩华[1] 刘洪新[1] 严寒静[2] 郭晓玲[2] 章卫民[1] 

机构地区:[1]广东省微生物研究所省部共建华南应用微生物国家重点实验室广东省菌种保藏与应用重点实验室广东省微生物应用新技术公共实验室,广东广州510070 [2]广东药学院,广东广州510006

出  处:《中国中药杂志》2016年第11期2112-2117,共6页China Journal of Chinese Materia Medica

基  金:国家973前期专项(2014CB460613);广东省自然科学基金项目(2015A030313710);广东省科技计划项目(2015A030302060;2014A030304050)

摘  要:为了研究广藿香内生真菌Diaporthe longicolla A616的活性次级代谢产物。采用正相硅胶、C18反相、Sephadex LH-20凝胶、HPLC等色谱技术从该菌株的发酵产物中分离得到了10个化合物,经波谱数据分析和文献比对,分别鉴定为1,3-diamino-1,3-dimethylurea(1),(7R,9R)-7-hydroxy-9-propyl-5-nonen-9-olide(2),ergosta-5,7,22-trien-3β-ol(3),(22E,24R)-ergosta-4,6,8(14)-22-tetraen-3-one(4),(22E,24R)-3β,5α-dihydroxy-6β-ergosta-7,22-diene(5),citreoisocoumarin(6),glycerol monolinoleate(7),1-(2-hydroxyethoxy)ethyl(E)-octadec-9-enoate(8),cyclo-(L-Pro-L-Ala)(9),cyclo(L)-Pro-(L)-Val(10),其中,化合物6~10为首次从Diaporthe属真菌中分离得到。体外细胞毒活性结果显示化合物4和5对肿瘤细胞株SF-268,MCF-7,NCIH460和Hep G-2具有显著的抑制活性,IC50分别为5.3,6.5,12.2,6.1μmol·L-1和8.2,5.2,6.1,9.4μmol·L-1。To study active secondary metabolites of endophytic fungus Diaporthe longicolla A616 isolated from Pogostemon cablin. Ten compounds were isolated from fermentation product of the strain 616 by silica gel, reverse phase silica gel, Sephadex-LH20, HPLC and so on. Their structures were identified as 1,3-diamino-1,3-dimethylurea ( 1 ), ( 7 R, 9R) -7-hydroxy-9-propyl-5-nonen-9-olide ( 2 ), Ergosta-5 ,7 ,22 -trien-3β-ol (3), ( 22 E, 24 R) -ergosta-4 ,6 ,8 ( 14 ) -22 -tetraen-3-one (4), ( 22 E, 24 R) -3β,5 α-dihydroxy-6β-ergosta-7,22 - diene ( 5 ), citreoisocoumarin ( 6 ), glycerol monolinoleate ( 7 ), 1 - ( 2 -hydroxyethoxy ) ethyl (E) -octadec-9 -enoate ( 8 ), cyclo- ( L-Pro-L- Ala) (9), cyclo (L) -Pro- (L) -Val ( 10 ), respectively, based on extensive spectroscopic analysis and literature comparisons. Compounds 6-10 were isolated from the genus Diaporthe for the first time. All isolated compounds were evaluated for in vitro cytotoxic activities against SF-268, MCF-7, NCI-H460 and HepG-2 tumor cell lines. Compounds 4 and 5 showed potent growth inhibitory activities against the four cell lines with IC50 values of 5. 3, 6. 5, 12. 2, 6. 1 μmol . L^-1 and 8.2, 5.2, 6. 1,9.4μmol . L^-1, respectively.

关 键 词:DIAPORTHE longicolla 内生真菌 广藿香 细胞毒活性 

分 类 号:R284[医药卫生—中药学]

 

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