The present invention provides an industrially advantageous method for producing an optically active naphthalene compound useful as a therapeutic agent for dermatitis or the like. Specifically, the present invention provides a method for producing an optically active naphthalene compound [I], which comprises: a step of reacting a compound [a-1] and a compound [b-1] with each other in the presence of a base and a catalyst that is composed of a Pd compound and a tertiary phosphine ligand (step a); a step of asymmetrically hydrogenating a compound [c-1] in the presence of a hydrogen donor and a complex that is prepared from a ruthenium compound and a chiral ligand, or alternatively in the presence of an optically active oxazaborolidine compound (a CBS catalyst) and a boron hydride compound (step b); and a step of treating a compound [d-1] with a reducing agent (step c). (In the above formulae, Ra and Rb represent the same or different lower alkyl groups; and X1 represents a halogen atom.).
本发明提供了一种工业上有利的制备光学活性
萘化合物的方法,该化合物可用作治疗皮炎等疾病的治疗剂。具体而言,本发明提供了一种制备光学活性
萘化合物[I]的方法,包括:在碱和由Pd化合物和三叔
膦配体组成的催化剂的存在下,使化合物[a-1]和化合物[b-1]相互反应(步骤a);在氢供体和由
钌化合物和手性
配体制备的复合物或者在光学活性的氧杂
硼烷化合物(
CBS催化剂)和
硼氢化合物的存在下,对化合物[c-1]进行不对称氢化(步骤b);以及用还原剂处理化合物[d-1](步骤c)。 (在上述公式中,Ra和Rb代表相同或不同的低碳基团;X1代表卤素原子。)