摘要:天然產(chǎn)物化學(xué)是研究植物等的化學(xué)成分的作用。楝科植物中含有大量的活性成分，在藥用、殺蟲等方面具有獨特的效果，是目前研究比較深入的植物種類之一。加快楝科植物活性成分的結(jié)構(gòu)鑒定和理化性質(zhì)的研究，把其作為化學(xué)農(nóng)藥的先導(dǎo)化合物而充分利用具有重要意義。本文對楝科植物溪桫中化合物的提取，分離和純化，研究其對抗TMV的作用。植物病毒病是農(nóng)業(yè)生產(chǎn)中的重要病害，因其防治困難，給農(nóng)業(yè)生產(chǎn)造成極大損失。特別是煙草花葉病毒給經(jīng)濟作物造成巨大的損失，因此研究具有重要的意義。楝科植物中次生代謝物種類繁多，主要化學(xué)成分有四環(huán)三萜類化合物、四去甲三萜類化合物、甾醇類、黃酮類、有機酸類、酚類、醇類、香豆精類等物質(zhì)次生代謝物。由于化學(xué)成分的差異，表現(xiàn)對昆蟲的活性強弱有很大的不同。甾醇類、芳香類、單萜及二萜類對昆蟲具有生物活性的種類很少，活性不高，對昆蟲有特殊生理活性物質(zhì)主要是四環(huán)三萜類化合物。本文從溪桫中分離得到5個化合物，并一一介紹。

關(guān)鍵詞：楝科植物；抗TMV；天然產(chǎn)物；溪桫；化合物

Abstract:The chemistry of natural products is study plants’ function of chemical composition. Meliaceae plants have a lot of active carbon. It has special effect in medicine and insect, is one kind of in-depth study plants. Speeding study of Meliaceae plants, It has very important in chemistry pesticide and first compound. This text is about the compound’s pick up, separate and purify of chisocheton, studying the function of anti-TMV. Plant virus disease is important evil in agricultural production. As It is difficult in prevention and cure, It give rise to agricultural production’s damage, Especially TMV. So the study has important meaning. Meliaceae plants has many hypo-supersession species. The main chemical composition has tetracyclic triterpenes, a four-to triterpenoids, sterols, flavonoids, organic acids, phenols, alcohol and coumarin class.Because of difference of chemical composition, It is different for insect. Sterols, aromatic, monoterpene and diterpenoid has litter life active ingredients kinds, low active ingredients. High active  ingredients is tetracyclic triterpenoids compound. We had pick up five compounds from chisocheton. It is introduced as follow.

Keywords: Meliaceae plants; anti-TMV; natural products; chisocheton; compounds