英语语法分析

This article is reviewing the structure-activity relationship of pentacyclic triterpenes.

笔者讨论了一些五环三萜类化合物的药理活性与结构的关系。

Typical markers are the porphyrins, pristine, phytane, steranes, carotenes and pentacyclic triterpanes.

典型的标志如卟啉、姥鲛烷、植烷、留烷、胡萝卜烷、以及五环三萜烷。

Aim: to search for novel modulators of glycogen metabolism through structural modifications of natural pentacyclic triterpenes.

目的：对天然五环三萜进行结构修饰，寻找新型糖原代谢调控药物。