The present invention addresses the problem of providing an efficient asymmetric synthesis method for an optically active 1,4-benzothiazepine-1-oxide derivative. [Solution] According to the present invention, an optically active 1,4-benzothiazepine-1-oxide derivative is efficiently produced by reacting a 1,4-benzothiazepine derivative or a salt thereof with a reagent containing a titanium compound, a chiral diol compound and water, and an oxidant in a solvent.
本发明要解决的问题是提供一种光学活性 1,4-苯并
硫氮杂卓-1-氧化物衍
生物的高效不对称合成方法。[解]根据本发明,通过将 1,4-苯并
硫氮杂卓衍
生物或其盐与含有
钛化合物、手性二元醇化合物和
水的试剂以及氧化剂在溶剂中进行反应,可高效制得光学活性 1,4-苯并
硫氮杂卓-1-氧化物衍
生物。