PYRANOGLUCOSE-SUBSTITUTED PYRAZOLE COMPOUND, PREPARATION METHOD THEREOF AND APPLICATION THEREOF
申请人:Yabao Pharmaceutical Group Co., Ltd.
公开号:EP3741771A1
公开(公告)日:2020-11-25
A pyranoglucose-substituted pyrazole compound, used as a pharmaceutical intermediate, having the structural formula represented by formula (9c). The present invention further relates to an intermediate compound represented by formula (10c) or a salt thereof. The present invention further relates to a preparation method of the aforementioned intermediate compound and a method of using the same to prepare an SGLT inhibitor. By means of the novel key intermediate, the preparation technique of an SGLT inhibitor is greatly simplified. In addition, because the intermediate can be precipitated in the form of a salt and is easy to purify, the purity of the SGLT inhibitor is significantly increased, compared with the original preparation pathway (crude product purity can reach 99% or more). (I)
一种吡喃葡萄糖取代的吡唑化合物,用作药物中间体,其结构式由式(9c)表示。本发明还涉及一种由式(10c)代表的中间体化合物或其盐。本发明进一步涉及上述中间体化合物的制备方法以及用其制备 SGLT 抑制剂的方法。通过新型关键中间体,SGLT 抑制剂的制备技术大大简化。此外,由于该中间体可以以盐的形式析出,且易于纯化,与原有制备途径相比,SGLT 抑制剂的纯度显著提高(粗产品纯度可达 99% 以上)。(I)