申请人:Gomi Noriaki
公开号:US09045460B2
公开(公告)日:2015-06-02
The present invention provides a method capable of industrially producing a target product, i.e., a compound represented by the aforementioned formula (I) or a salt thereof, which is useful for preventing and treating cerebrovascular disorders such as cerebral infarction, cerebral hemorrhage, subarachnoid hemorrhage, and cerebral edema, particularly for preventing and treating glaucoma, at high yield even on a large scale without imposing a negative impact on the environment. The present invention provides a method for producing a compound represented by formula (I) or a salt thereof, wherein the method comprises a step of reacting a compound represented by formula (III) or a salt thereof with a compound represented by formula (II) in the presence of at least one solvent selected from the group consisting of a nitrile solvent, an amide solvent, a sulfoxide solvent, and a urea solvent, and a base.
本发明提供了一种能够在工业上生产目标产品的方法,即用于预防和治疗脑血管疾病,如脑梗塞、脑出血、蛛网膜下腔出血和脑水肿的化合物,特别是用于预防和治疗青光眼的化合物,即上述式(I)或其盐,即使在大规模下也能高产率地生产,而不对环境造成负面影响。本发明提供了一种生产上述式(I)或其盐的化合物的方法,其中该方法包括在至少一种溶剂的存在下,通过将上述式(III)或其盐的化合物与上述式(II)的化合物在碱的存在下反应的步骤。所述溶剂选自腈溶剂、酰胺溶剂、亚砜溶剂和脲溶剂组成的群体之一。