英语语法分析

The purity of the ginkgolide A prepared in this process was above 99%, with the yield of 60%.

该工艺制得的银杏内酯A晶体纯度高于99%，总收率约为60%。

The invention relates to a method for preparing ginkgolide compound, belonging to the medicine field.

本发明属于医药领域，具体涉及一种银杏内酯类化合物制备方法。

Objective: to investigate the effects of Ginkgolide on the apoptosis of cultured neurons in the rat embryonic basal forebrain.

目的：探讨银杏内酯对体外培养的鼠胚基底前脑神经元凋亡的影响。