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作 者:李忠榜[1,2] 陈振[1,2] 陈安良[1,2] 张绍勇[1,2] 刘映前[3] 杨波[1,2]
机构地区:[1]浙江农林大学生物农药高效制备技术国家地方联合工程实验室,浙江临安311300 [2]浙江农林大学林业与生物技术学院,浙江临安311300 [3]兰州大学药学院,兰州730000
出 处:《农药学学报》2015年第2期136-142,共7页Chinese Journal of Pesticide Science
基 金:浙江省重中之重林学一级开放基金(KF201325)
摘 要:以(20S)-喜树碱(CPT)为原料,根据类同合成法和亚结构连接法原理,对CPT的7-C位进行修饰,得到了系列新型7-(1-酰基哌嗪-4-基)甲基喜树碱衍生物(4a^4m),所有衍生物的结构均通过核磁共振氢谱(1H NM R)和液-质联用(LC-M S)等方法确证;并初步测定了其对朱砂叶螨Tetranychus cinnabarinus和松材线虫Bursaphelenchu xylophilus的室内杀虫活性。结果表明:与喜树碱相比,各衍生物均表现出不同程度的杀虫活性,其中化合物7-[1-(4-甲氧基苯酰基)哌嗪-4-基]-甲基喜树碱(4g)和7-(1-环戊酰基哌嗪-4-基)-甲基喜树碱(4j)对朱砂叶螨24 h的半数致死浓度(LC50值)分别为8.10和9.05 mg/L,对松材线虫的LC50值分别为6.34和6.68 mg/L。研究结果可为喜树碱衍生物杀虫活性构效关系研究奠定基础。With (20S)-camptothecin (CPT) as the raw material, a series of 7-(1-carbonyl-piperazin-4-yl) methyl-camptothecin derivatives (4a-4m) were synthesized after modification of C7 of CPT. Their structures were identified by1 H NMR and LC-MS. The preliminary bioassay showed that the compound 7-( 1-( 4-methoxybenzoyl ) piperazin-4-yl ) methyl-camptothecin ( 4 g ) and 7-( 1-cyclopentanecarbonyl-piperazin-4-yl ) methyl-camptothecin ( 4 j ) exhibited more insecticidal activity against Tetranychus cinnabarinus and Bursaphelenchu xylophilus than CPT. For T. cinnabarinus, LC50 value (24 h) of 4g was 8. 10 and 9. 05 mg/L. And for B. Xylophilus, LC50 (24 h) value of 4j was 6. 34 and 6. 68 mg/L. The results are useful for the investigation of insecticidal activity and structure-activity relationship of camptothecin derivatives.
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