摘要
在活性追踪指导下,通过多次硅胶柱层析从白鲜皮石油醚提取物中分离得到两个具有杀菌活性化合物WML-01和WML-02,经1HNMR和13CNMR鉴定分别为皮酮和白鲜碱。可有效抑制玉米弯孢病菌和烟草赤星病菌孢子的萌发。皮酮对烟草赤星病菌的EC50值为64.2μg/mL,对玉米弯孢病菌的EC50值为123.3μg/mL;白鲜碱对玉米弯孢病菌的EC50值为46.6μg/mL,对烟草赤星病菌的EC50值为91.7μg/mL。
Two fungicidal compounds were isolated from Dictamnus dasycarpus Turcz by the bioactivity guided method, whose structures were identified as fraxinellone and dictamnine by ^1H NMR and ^13C NMR. The results showed that the ECso of fraxinellone were determined as 64.2μg/mL against Alternaria longipes, and 123.3μg/mL against Curvulavia lunata. The EC50 of dictamnine were determined as 91.7μg/mL against Alternaria longipes, and 46.6μg/mL against Curvulavia lunata.
出处
《农药》
CAS
北大核心
2006年第11期739-741,共3页
Agrochemicals
基金
863高技术研究发展计划(2002AA245121)
关键词
白鲜皮
杀菌活性
Dictamnus dasycarpus
fungicidal activity
