Lactones

Most antifeedant secondary plant compounds fall into one of four categories: sesquiterpene lactones, isoflavonoids, quassinoids, limonoids.

大部分植物源拒食性次生性化合物可以分为倍半萜烯内酯类、异黄酮类、苦木素类和柠檬苦素类化合物4大类。

The main ingredients of Tripterygium wilfordii are total alkaloids and terpenoid lactones.

雷公藤生物碱和总萜内酯是雷公藤主要有效成分。

More than 263 kinds of chemical components have been found in Ligusticum Chuanxiong Hort., including essential oils, lactones, phenols, organic acids, inorganic elements and so on.

已从川芎中发现263余种化学成分，涵盖挥发油、内酯类、酚性成分、有机酸以及无机元素等，尚无川芎多糖的报道。

Lactones are major chemicals used in the preparation of other organic reagents.

内酯是制备其他有机试剂的重要化学品.

The contents of carboxyl, phenol hydroxyl, and lactones groups on carbon black surface have been determined.

同时测定了炭黑表面羧基、酚羟基、内酯基等酸性含氧基团的含量。

Synthesis of novel chiral condensed ring lactones

新型手性杂环并环丁内酯的合成研究

Flavonoids and terpene lactones, the leading bioactive constituents from the leaves of Ginkgo biloba are reviewed.

银杏叶中主要生物活性成分黄酮类和萜内酯是目前银杏叶提取物及植物药质量控制的有效依据.

The green, above-ground portions may cause contact dermatitis due to the lactones the plant produces.

由于牛蒡露出地面的部份会分泌出一种内酯,可引起接触性皮肤炎,所以采摘时要加倍留神.

doramectin is a new generation of macrocyclic lactones antibiotics, belonging to third-generation derivatives of avermectin.

多拉菌素是新一代大环内酯类抗生素，属于阿维菌素第三代衍生物。

Dr Blackwell studies a group of quorum-sensing molecules called acylated homoserine lactones ( AHLs ).

Blackwell博士研究了群体感应中的一种叫做酰基高丝氨酸内酯 ( AHLs ) 分子.

More than 100 kinds of various compounds have been isolated from these plants. It contains: xanthones, flavones, glucosides, terpenoids and a few of lactones, alkaloids and organic acids.

从这些植物中已分离出100多种不同类型的化合物，包括（口山）哃、黄酮、甙类、萜类及少部分内酯、生物碱和有机酸类化合物。