Among its several embodiments, the present invention provides an improved process for the preparation of tetrahydrobenzothiepine-1,1-dioxide compounds; the provision of a process for preparing a diastereomeric mixture of tetrahydrobenzothiepine-1,1-dioxide compounds from a single diastereomer of such compounds; the provision of a process for the preparation of 3-bromo-2-substituted propionaldehyde compounds; the provision of a process for the preparation of 3-thio-2-substituted propionaldehyde compounds; and the provision of a process for the preparation of single crystals of ASBT inhibitors having high purity and low levels of solvent impurities.
在其几个实施例中,本发明提供了一种改进的制备四氢
苯并噻吩-1,1-二氧化物化合物的方法;提供了一种从单个该类化合物的对映异构体制备四氢
苯并噻吩-1,1-二氧化物混合物的方法;提供了一种制备3-溴-2-取代
丙醛化合物的方法;提供了一种制备3-
硫-2-取代
丙醛化合物的方法;以及提供了一种制备高纯度且溶剂杂质含量低的
ASBT
抑制剂单晶的方法。