JMC的审稿人提出要求说明造成产率高低的原因。文章中的化合物是同一个系列的,机理相同,各个化合物之间在合成步骤的产率相差应该不大,主要的差别就在于重结晶后得到纯品的产量多少差异,及过柱子时因过柱技术问题造成了最终纯品的差别。但是难道要以这样的理由回答吗?审稿人的原话是这样的:The authors claim that the chalcone-based spiroheterocycles were obtained in yields ranging from 10% to 95% after purification. Please explain what causes the low yields of compounds such as 2e and 5k. 请问各位大神这样的问题要如何回答?