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Phytotoxic ent-Isopimarane-Type Diterpenoids from Euphorbia hylonoma.
Journal of Natural Products ( IF 3.3 ) Pub Date : 2018-11-06 , DOI: 10.1021/acs.jnatprod.8b00365
Wen-Jun Wei 1 , Qiu-Yan Song 2 , Zai-Qin Zheng 1 , Xiaojun Yao 1 , Ya Li 1 , Kun Gao 1
Affiliation  

Thirteen new ent-isopimarane-type diterpenoids, 1-10 and 14-16, and seven known diterpenoids, 11-13 and 17-20, were isolated from the roots of Euphorbia hylonoma. Among these compounds, four pairs of C-12 epimers (1 vs 2, 4 vs 5, 12 vs 13, and 14 vs 15) were identified. The structures of the new diterpenoids were elucidated using spectroscopic data analyses, electronic circular dichroism, and single-crystal X-ray diffraction data. The phytotoxic effects of compounds 1-20 on the growth of the roots and shoots of Poa annua and Festuca arundinacea seedlings were evaluated. Among the tested diterpenoids, 18 was the most active for inhibiting the growth of P. annua seedlings, and this compound was as active as glyphosate.

中文翻译:

一品红大戟的植物毒性ENT-异匹马烷型二萜。

从大戟hylonoma的根中分离出13个新的ent-isomarmarane型双萜,1-10和14-16,以及七个已知的双萜,11-13和17-20。在这些化合物中,鉴定出四对C-12差向异构体(1对2、4对5、12对13、14对15)。使用光谱数据分析,电子圆二色性和单晶X射线衍射数据阐明了新的二萜的结构。评估了化合物1-20对Poa annua和Festuca arundinacea幼苗的根和芽生长的植物毒性作用。在所测试的二萜类化合物中,有18种对抑制青枯菌的生长最为活跃,该化合物的活性与草甘膦相当。
更新日期:2018-11-06
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