摘要
为了研究湛江红树(Rhizophora apiculata)植物内生真菌Fusarium sp.F67和B42的二氢异香豆素类次级代谢产物及其抑菌活性,采用色谱技术对菌株F67和B42的代谢产物进行分离纯化,确认所得化合物的结构为:3,6,8-三羟基-3,4,5,7-四甲基-3,4-二氢异香豆素(sclerotinin A)(1),二氢橘霉素(2)、5-甲基蜂蜜曲菌素(3)、5-羧基蜂蜜曲菌素(4)、4-羟基蜂蜜曲菌素(5)和蜂蜜曲菌素(6),并利用滤纸片琼脂扩散法检测化合物对7种常见致病菌的抑菌活性。在1.0 g/L质量浓度下化合物1~4对受试菌株的抑菌圈范围为5.1~11.0 mm,其中化合物4的抑菌活性相对较强,抑菌谱相对较广,可为挖掘新型抗菌药物的研究提供补充。
In order to study the secondary metabolites of dihydroisocoumarin compounds from mangrove endophytic fungi Fusarium sp. F67 and B42,the metabolites of strains F67 and B42 were isolated and purified by chromatographic techniques,and their structures were determined as follows: 3,6,8-trihydroxy-3,4,5,7-tetramethyl-3,4-dihydroisocoumarin( sclerotinin A)( 1),dihydrocitrinone( 2),5-methylmellein( 3),5-carboxymellein( 4),4-hydroxymellein( 5) and mellein( 6). Antibacterial activities of compounds 1 ~ 4 in1. 0 g/L show that the inhibitory zone against the tested strains ranges from 5. 1 to 11. 0 mm. Among them,compound 4 has the strongest antibacterial activities and the broadest bacteriostatic spectra. These results provide supplement to the research and development of new antibacterial drug.
作者
凌惠平
陈晓晴
谢胜男
陈月间
佘志刚
林永成
陶移文
LING Huiping;CHEN Xiaoqing;XIE Shengnan;CHEN Yuejian;SHE Zhigang;LIN Yongcheng;TAO Yiwen(School of Pharmaceutical Sciences,Guangzhou Medical University,Guangzhou 511436,China;School of Chemistry and Chemical Engineering,Sun Yat-sen University,Guangzhou 510275,China)
出处
《应用化学》
CAS
CSCD
北大核心
2018年第6期708-713,共6页
Chinese Journal of Applied Chemistry
基金
广东省自然科学基金(2016A030313588)
广州市教育局项目(1201610155)
2017年海洋和渔业发展专项资金(科技攻关与研发)(A201701C07)
2018年度广州医科大学大学生实验室开放项目资助
关键词
红树林
内生真菌
异香豆素
抑菌活性
Rhizophora apiculata
endophytic fungi
dihydroisocoumarins
antibacterial activity