A process for the preparation of a compound of the formula:-
R is benzyl or C₁-C₅ alkyl,
and R¹ is C₁-C₅ alkyl,
which comprises heating a compound of the formula:-
either in acid addition salt form, or in the presence of an acid catalyst, with at least one molar equivalent of an amine of the formula:-
R-NH₂
either neat or in a reaction-inert solvent.
Also claimed is cryatalline 2-(1-pentyl-3-quanidino)-4-(2-methyl-4-imidazolyl)thiazole dihydrochloride trihydrate, preparable by the above process.
一种制备式如下化合物的工艺
R 是苄基或 C₁-C₅ 烷基、
和 R¹ 是 C₁-C₅ 烷基、
其中包括加热以下式子的化合物
以酸加成盐形式或在酸催化剂存在下,与至少一个摩尔当量的式胺加热
R-NH₂
或在反应惰性溶剂中加热。
本发明还涉及可通过上述工艺制备的 2-(1-戊基-3-
胍基)-4-(2-甲基-4-
咪唑基)
噻唑二盐酸盐三
水合物。