英语语法分析

A new process for the synthesis of ureas based on the selective REDOX carbonylation of amine and nitro compounds was described.

本文概述了胺硝基物选择氧化还原羰基化生成脲的新工艺路线。

The third chapter was devoted to the study of quantitative structure-activity relationship(QSAR) for indazolyl ureas as TRPV1 antagonists.

第三章致力于吲唑脲类辣椒素受体（TRPV1）通道拮抗剂的定量构效关系（QSAR）研究。

By retrieving concerned Literatures, this article discussed comprehensively the biological activities of phenyl ureas, acyl ureas and tetrazoles.

本文通过检索文献，对苯脲类、酰基脲类、酰基硫脲类及四唑类化合物的生物活性作了系统的论述。