申请人:SMITH KLINE & FRENCH LABORATORIES
LIMITED
公开号:EP0024873A1
公开(公告)日:1981-03-11
A process is disclosed for preparing compounds of formula (1) :
and acid addition salts thereof where Het is an optionally substituted 5-or6- membered fully unsaturated nitrogen containing heterocyclic group where the substituents (which can be the same or different) are one or more C1-4 alkyl, trifluoromethyl, halogen, hydroxy, C1-4 alkoxy or amino groups; n is 2 or 3; Z is hydrogen or C1-4 alkyl; A is C1-5 alkylene optionally interrupted with oxygen or sulphur and B is hydrogen, methyl, C3-6 cycloalkyl, an optionally substituted heteroaryl group where the substituents (which can be the same or different) are one or more C1-4 alkyl, C1-4 alkoxy or hydroxy groups; or B is a naphthyl, 5- or 6-(2,3-dihydro-1, 4-benzodioxinyl) or a 4- or 5-(1,3-benzodioxolyl) group or an optionally substituted phenyl group where the substituents (which can be the same or different) are one or more C1-4 alkyl, C1-4 alkoxy, halogen, aryl-(C1-4 alkoxy), hydroxy, C1-4 alkoxy-C1-4 alkoxy, trifluoromethyl, di(C1-4 alkyl) amino, phenoxy, halophenyl, or C1-4 alkoxyphenyl groups which comprises reacting a compound of formula (4) :-
or an acid addition salt thereof where Het is as defined with reference to formula 11) provided that any substituents which interfere with the reaction are protected and L is a group displacable with thiol with a compound of formula (3) :-
or an acid addition salt thereof where n, Z, A and B are as defined with reference to formula (1) provided that any phenolic hydroxy groups within B are optionally protected, and thereafter removing any protecting groups.
本发明公开了一种制备式 (1) :
及其酸加成盐 其中 Het 是任选取代的 5 或 6 位元完全不饱和含氮杂环基团,取代基(可以相同或不同)是一个或多个 C1-4 烷基、三氟甲基、卤素、羟基、C1-4 烷氧基或氨基;n 是 2 或 3;Z 是氢或 C1-4 烷基;A 是任选用氧或硫间断的 C1-5 亚烷基,B 是氢、甲基、C3-6 环烷基、任选取代的杂芳基,其中取代基(可以相同或不同)是一个或多个 C1-4 烷基、C1-4 烷氧基或羟基;或 B 是萘基、5-或 6-(2,3-二氢-1,4-苯并二氧杂环戊基)或 4-或 5-(1,3-苯并二氧杂环戊基)基团或任选取代的苯基,其中取代基(可以相同或不同)是一个或多个 C1-4 烷基、C1-4 烷氧基、卤素或羟基、-
或其酸加成盐,其中 Het 如参照式 11 所定义),条件是任何干扰反应的取代基均被保护,且 L 为可与硫醇置换的基团,与式 (3) 化合物:- 反应
或其酸加成盐 其中 n、Z、A 和 B 如参照式(1)所定义,但 B 中的任何酚羟基可选择被保护,然后去除任何保护基团。