›› 1998, Vol. 41 ›› Issue (4): 366-370.

• 研究论文 • 上一篇    下一篇

克罗烷二萜的昆虫拒食活性及构效关系研究

徐建华 尚稚珍 杨淑华 陈焕明 闵知大   

  • 收稿日期:1998-02-09 出版日期:1998-11-20 发布日期:1998-05-20

INSECT ANTIFEEDING ACTIVITIES AND THEIR RELATIONSHIP WITH STRUCTURES OF CLERODANE DITERPENOIDS

Xu Jianhua Shang Zhizhen Yang Shuhua Chen Huanming Min Zhida   

  • Received:1998-02-09 Online:1998-11-20 Published:1998-05-20

摘要: 以饲料柱称重法测定25个克罗烷二萜新化合物对亚洲玉米螟Ostrinia furnacalis(Guenee)5龄幼虫的拒食活性,并进行构效关系分析。结果表明:立体效应对拒食活性意义 重大;C9边链、C18位的酯基对活性具有一定影响;C4处的螺环氧结构看来并非活性所必需。且在25μg/mL时选择法测定中,活性最高的化合物拒食率为57.9%,而500/μg/mL时非选择法测定中拒食率为43.2%。

关键词: 克罗烷二萜, 亚洲玉米螟, 拒食剂, 构效关系

Abstract: Twenty five clerodane diterpenoids were tested for antifeeding activities against fifth instar larvae of Ostrinia furnacalis (Guenee), and the structure-activity relationships were analyzed. Experimental results suggest that stereochemstry is importantfor antifeeding activity while the side chain at C9 and acetyl group at C18 exhibit certain effects, but a spiroepoxide structure at C4 seems not important for the activity. The most potent antifeeding clerodane compound had an antifeeding ratio of 57.9% in choice test (250 μg/mL), and 43.2% in no-choice test (500 μg/mL).

Key words: clerodane diterpenoids, Ostrinia furnacalis (Guenee), antifeedant, strucu- ture activity relationship