Alternatively, the compound of the invention may be prepared using optically active reactants.

另外，本发明的化合物可使用光学活性反应物来制备。

youdao

However, if optically active reagents are being used it would be important to avoid the pH range above 6, as at the higher pH range interconversion of the free compound of Formula I occurs.

使用光学活性试剂对避免PH值超过6很重要，因为ph过高时分子式一的化合物可以自由转变。

youdao

However, if optically active reagents are being used it would be important to avoid the pH range above 6, as at the higher pH range interconversion of the free compound of Formula I occurs.

使用光学活性试剂对避免PH值超过6很重要，因为ph过高时分子式一的化合物可以自由转变。

youdao