摘要
从冬凌草中分离出3个化合物,分别鉴定为冬凌草甲素(1)、冬凌草乙素(2)和5-羟基-2-(4-羟基-3-甲氧基苯基)-6,7,8-三甲氧基黄酮(3)。生测结果表明:化合物1对供试的7种植物病原真菌的菌丝生长有一定的抑制作用,但活性较低,质量浓度为500mg/L时抑制率低于50%;3个化合物对供试的4种病原真菌孢子具有一定的抑制作用,EC50值在668～3869mg/L之间,活性明显低于对照药剂嘧霉胺(EC50值160～421mg/L)。化合物1、2对供试的3种革兰氏阳性细菌有较好的抑菌活性,其MIC值在15.63～31.25mg/L之间,化合物3对供试4种细菌没有明显的抑菌活性。
Three compounds were isolated from the aerial part of Rabdosia rubescens,and were identified as oridonin(1), rubescensine B(2)and 5-hydroxy-2-(4-hydroxy-3-methoxyphenyl)-6,7,8-trimethoxy-flavone(3).The bioassay results showed that the compound 1 exhibited inhibitory activity to the mycelium growth of the tested 7 species of fungus,and the inhibitory rate was less than 50%at the concentration of 500 mg/L.Three compounds had considerable inhibitory activity to the spore germination of the tested 4 species of ...
出处
《农药》
CAS
北大核心
2010年第6期410-412,428,共4页
Agrochemicals
关键词
冬凌草
冬凌草甲素
冬凌草乙素
黄酮
抑菌活性
Rabdosia rubescens
oridonin
rubescensine B
flavone
inhibitory activity
