The chirality product is the important medicine midbody, which has an important application foreground.

所得到手性产物为医药中间体，具有应用前景。

Lactide is the midbody for the preparation of poly(lactic acid), the ratio of lactic acid to lactide is low and hamper the extensive application of PLA.

丙交酯是由备聚中间体,其产率偏低是约聚大规模应用关键。