摘要
为研究苦槛蓝(Myoporum bontioides A. Gray)的化学成分,采用多种柱色谱技术从苦槛蓝叶中分离得到13个化合物,它们的结构分别鉴定为:野黑樱苷(1)、类叶升麻苷(2)、5,7-二羟基二氢黄酮(3)、3-O-β谷甾醇苷(4)、(3R)-oct-1-en-3-ol-O-β-D-glucopyranosyl-(1″→2′)-O-β-D-glucopyranoside (5)、7-甲氧基香橙素(6)、异樱花素(7)、匙叶桉油烯醇(8)、愈创木醇(9)、(1S,2R,5S,6R)-2,6-bis(5-methoxy-3,4-methylenedioxyphenyl)-3,7-dioxabicyclo[3.3.0]octane (10)、(1R,2S,5R,6S)-2-(4-hydroxy-3-methoxyphenyl)-6-(3,4-methylenedioxyphenyl)-3,7-dioxabicyclo[3.3.0]octane (11)、去甲基川陈皮素(12)和3′,4′,5,6,7,8-六甲氧基黄酮(13),其中化合物4、5、7-11为首次从苦槛蓝植物中分离得到。刃天青显色法测试部分化合物对大肠杆菌与金黄色葡萄球菌的抑制活性,结果表明,5,7-二羟基二氢黄酮(3)对大肠杆菌与金黄色葡萄球菌有一定的抑制作用,其MIC值为62.50μg mL^-1。
To study the chemical constituents in Myoporum bontioides A. Gray, thirteen compounds were isolated from the leaves of M. bontioides by various chromatography techniques. On the basis of spectral data, they were identified as prunasin (1), acteoside (2), 5,7-dihydroxylfavanone (3), anthemisol (4), (3R)-oct-1-en-3-ol-O-β-D-glucop-yranosyl-(1″→2″)-O-β-D-glucopyranoside (5), 7-methoxyaromadenrin (6), 5,7-dihydroxy-2-(4-methoxyphenyl)-chroman-4-one (7), spainulenol (8), guaiol (9), (1S,2R,5S,6R)-2,6-bis(5-methoxy-3,4-methylenedioxyphenyl)-3,7-dioxabicyclo[3.3.0]octane (10), (1R,2S,5R,6S)-2-(4-hydroxy-3-methoxyphenyl)-6-(3,4-methylenedioxyphenyl)-3,7-dioxabicyclo[3.3.0]octane (11), demethylnobiletin (12) and 2-(3,4-dimethoxyphenyl)-5,6,7,8-tetra-methoxy-4H-chromen-4-one (13). Compounds 4, 5, and 7 - 11 were obtained from M. bontioides for the ifrst time. The inhibitory activity against Staphyloccocus aureus and Escherichia coil were determined by the use of a 96 well plate assay. The results showed that 5,7-dihydroxylfavone (3) possessed modest level of antibacterial activity with MIC value of 62.50 μg mL^-1.
出处
《热带亚热带植物学报》
CAS
CSCD
北大核心
2014年第3期307-313,共7页
Journal of Tropical and Subtropical Botany
基金
国家自然科学基金项目(20872039)
广东省科技计划项目(2012B031000014)
华南农业大学"211工程"三期重点建设项目(2009B010100001)资助
关键词
苦槛蓝叶
化学成分
抑菌活性
Myoporum bontioides A. Gray
Leaf
Chemical composition
Bacteriostatic activity