Thiophene derivatives, processes for the production thereof and pharmaceutical compositions containing them
申请人:GLAXO GROUP LIMITED
公开号:EP0027744A1
公开(公告)日:1981-04-29
The invention relates to compounds of the general formula (I)
and physiologically acceptable salts, hydrates and bioprecursors thereof in which one of R and R2 represents hydrogen, halogen or a C1-4 alkyl group which may be optionally substituted by hydroxy or C1-4 alkoxy, and the other represents the group R4R5NAlk-(R4 and R5 see inside the description); R3, which may be in either the 2-or 3-position, represents the group -(CH2)nX(CH2)mNH-Z where X represents -CH2-, -O- or -S-; n represents zero, 1 or 2; m represents2,3 or4; and Z represents either the group
orthe group
(R6, Y, R7 and R. see inside the description); with the provisos that where R2 represents the group R4R5NAlk then R, is in the 2-position; and where R2 represents hydrogen then R3 is in the 3-position.
The compounds of formula (I) show pharmacological activity as selective histamine H2-antagonists.
本发明涉及通式 (I) 的化合物及其生理上可接受的盐、水合物和生物前体。
及其生理上可接受的盐、水合物和生物前体,其中 R 和 R2 中的一个代表氢、卤素或可被羟基或 C1-4 烷氧基任选取代的 C1-4 烷基,另一个代表基团 R4R5NAlk-(R4 和 R5 参见内部说明);R3 可位于 2 位或 3 位,代表基团 -(CH2)nX(CH2)mNH-Z,其中 X 代表 -CH2-、-O- 或 -S-;n 代表零、1 或 2;m 代表 2、3 或 4;Z 代表基团
或基团
(R6、Y、R7 和 R.见描述);但条件是,当 R2 代表基团 R4R5NAlk 时,R 处于 2 位;当 R2 代表氢时,R3 处于 3 位。
式(I)化合物具有选择性组胺 H2-拮抗剂的药理活性。