Amino-1,2,4-triazole derivatives, processes for their preparation and pharmaceutical compositions containing them
申请人:GLAXO GROUP LIMITED
公开号:EP0048555A1
公开(公告)日:1982-03-31
he invention provides compounds of the general formula (I)
and physiologically acceptable salts, hydrates and bioprecursors thereof, in which
R, represents C1-14 alkyl, cycloalkyl, alkenyl, alkynyl, aralkyl, trifluoroalkyl, heteroaralkyl or alkyl substituted by cycloalkyl, hydroxy, alkoxy, amino, alkylamino or dialkylamino; and
R2 represents hydrogen or a C1-4alkyl group;
or R1 and R2 together with the nitrogen atom to which they are attached form a 5-10 membered ring which may be saturated or may contain at least one double bond, may be unsubstituted or may be substituted by one or more C1-3 alkyl groups, e.g. methyl, or a hydroxy group and/or may contain another heteroatom, selected from oxygen and sulphur;
Alk represents a straight or branched alkylene chain of 1 to 6 carbon atoms;
Q represents a furan or thiophen ring in which incorporation into the rest of the molecule is through bonds at the 2-and 5- positions, the furan or thiophen ring optionally bearing a further substituent R5 adjacent to the group R1R2N-Alk, or Q represents a benzene ring in which incorporation into the rest of the molecule is through bonds at the 1-and 3- or 1- and 4- positions;
Rs represents halogen or C1-4 alkyl which may be substituted by hydroxy or C1-4 alkoxy;
X and Y, which may be the same or different, each represent oxygen, sulphur, methylene or a bond;
n represents zero, 1, 2 or 3 and m represents an integer from 2 to 5 with the provisos that (a) the total number of atoms in the chain X(CH2)nY(CH2)m is an integer from 3 to 8 and (b) when X and Y represent oxygen or sulphur then n is 2 or 3.
R3 represents alkyl, alkenyl, aralkyl, hydroxy-C2-6 alkyl or alkoxy-C2-6 alkyl; and
R4 represents hydrogen, alkyl, alkenyl, aralkyl, acyloxyalkyl, alkylthioalkyl, arylthioalkyl, aryloxyalkyl, aralkyloxyalkyl, or the group (CH2)qR6 where q is zero, 1,2,3,4, 5 or 6 and the alkylene chain (CH2)q may be straight or branched, and
R6 is hydroxy, alkoxy, nitro, heteroaryl or CH2NHC(=A)NHR7 where A is NCN, NSO2Methyl, NSOzPhenyl, or CHNOz, and R7 is alkyl;
or R6 is the group NR8R9 where R8 is hydrogen or alkyl; and R9 is hydrogen, alkyl, alkenyl, aryl, aralkyl, or heteroaralkyl, or R9 is the group SO2R10 where R10 is alkyl or aryl; or R9 is the group COR11 where R11 is hydrogen, alkyl, aryl, aralkyl, alkoxy, halomethyl, heteroaryl, heteroaralkyl, or the group NHR12 where R12 is hydrogen, alkyl, cycloalkyl, aryl or
aralkyl; or R8 and R9 together represent the group =CR13R14 where R13 represents aryl or heteroaryl and R14 represents hydrogen or alkyl;
or R6 is the group SO2R15 in which R,5 is hydroxy, alkyl, aryl or the group NR16R17 where R16 and R17, which may be the same or different, each represent hydrogen or alkyl;
or R6 is the group COR18 where R18 is hydrogen, hydroxy, alkoxy, aryloxy, aralkyloxy, alkyl, aryl, aralkyl or the group NR19R20 where R19 is hydrogen or alkyl optionally substituted by a hydroxy or alkoxy group; and R20 is hydrogen, alkyl (optionally substituted by a hydroxy or alkoxy group), alkenyl, aryl, aralkyl or cycloalkyl, or NR19R20 forms a 5 to 8 membered ring which may contain another heteroatom, e.g. oxygen, or a double bond and/or may be substituted by hydroxy or one or two C1-3 alkyl (e.g. methyl) groups; or R6 is the group CR21=NR22 where R21 is hydrogen, alkyl, aryl or aralkyl and R22 is hydroxy, alkoxy, aralkyloxy or -NHC(=B)NH2 where B is oxygen or sulphur;
with the proviso that when the group R6 contains a carbon atom through which it is linked to the alkylene group (CH2)q then the total number of carbon atoms in the resulting chain is not greater than 6 (i.e. q is not greater than 5); or R3 and R4 together represent the group + CH=CH )̵2 or -(CH2)4-.
The compounds show pharmacological activity as selective histamine H2-antagonists.
本发明提供通式 (I) 的化合物
及其生理上可接受的盐、水合物和生物前体,其中
R,代表 C1-14 烷基、环烷基、烯基、炔基、芳基、三氟烷基、杂烷基或被环烷基、羟基、烷氧基、氨基、烷基氨基或二烷基氨基取代的烷基;以及
R2 代表氢或 C1-4 烷基;
或 R1 和 R2 与它们所连接的氮原子一起形成一个 5-10 个成员的环,该环可以是饱和的,也可以含有至少一个双键,可以是未取代的,也可以被一个或多个 C1-3 烷基(如甲基)或羟基取代,和/或可以含有另一个选自氧和硫的杂原子;
Alk 代表 1 至 6 个碳原子的直链或支链亚烷基;
Q 代表呋喃环或噻吩环,通过 2-和 5-位上的键与分子的其余部分结合,呋喃环或噻吩环可选择带有与基团 R1R2N-Alk 相邻的另一个取代基 R5,或 Q 代表苯环,通过 1-和 3-或 1-和 4-位上的键与分子的其余部分结合;
Rs 代表卤素或可被羟基或 C1-4 烷氧基取代的 C1-4 烷基;
X和Y可以相同或不同,各自代表氧、硫、亚甲基或键;
n 代表零、1、2 或 3,m 代表 2 至 5 的整数,但条件是:(a) 链中 X(CH2)nY(CH2)m 的原子总数为 3 至 8 的整数;(b) 当 X 和 Y 代表氧或硫时,n 为 2 或 3。
R3 代表烷基、烯基、芳基、羟基-C2-6 烷基或烷氧基-C2-6 烷基;以及
R4 代表氢、烷基、烯基、芳烷基、酰氧基烷基、烷硫基烷基、芳硫基烷基、芳氧基烷基、芳氧基烷基或基团 (CH2)qR6,其中 q 为零、1、2、3、4、5 或 6,亚烷基链 (CH2)q 可以是直链或支链,以及
R6 是羟基、烷氧基、硝基、杂芳基或 CH2NHC(=A)NHR7 其中 A 是 NCN、NSO2 甲基、NSOz 苯基或 CHNOz,R7 是烷基;
或 R6 是基团 NR8R9,其中 R8 是氢或烷基;R9 是氢、烷基、烯基、芳基、芳烷基或杂烷基,或 R9 是基团 SO2R10,其中 R10 是烷基或芳基;或 R9 是基团 COR11,其中 R11 是氢、烷基、芳基、芳烷基、烷氧基、卤甲基、杂芳基、杂烷基,或基团 NHR12,其中 R12 是氢、烷基、环烷基、芳基或芳烷基。
或 R8 和 R9 共同代表基团=CR13R14,其中 R13 代表芳基或杂芳基,R14 代表氢或烷基;
或 R6 是基团 SO2R15,其中 R,5 是羟基、烷基、芳基或基团 NR16R17,其中 R16 和 R17 可以相同或不同,各自代表氢或烷基;
或 R6 是基团 COR18,其中 R18 是氢、羟基、烷氧基、芳氧基、烷氧基、芳烷氧基、烷基、芳基、芳烷基或基团 NR19R20,其中 R19 是氢或可选择被羟基或烷氧基取代的烷基;以及 R20 是氢、烷基(可选择被羟基或烷氧基取代)、烯基、芳基、芳烷基或环烷基,或 NR19R20 形成一个 5 至 8 个成员的环,该环可包含另一个杂原子,例如:氧或双键。或 R6 为基团 CR21=NR22 其中 R21 为氢、烷基、芳基或芳烷基,R22 为羟基、烷氧基、芳氧基或 -NHC(=B)NH2 其中 B 为氧或硫;
但条件是,当基团 R6 包含一个碳原子,通过该碳原子与亚烷基 (CH2)q 连接时,所得链中的碳原子总数不超过 6 个(即 q 不超过 5 个);或 R3 和 R4 共同代表基团 + CH=CH )̵2 或 -(CH2)4-。
这些化合物具有选择性组胺 H2- 拮抗剂的药理活性。