申请人:Teijin Limited
公开号:US04402975A1
公开(公告)日:1983-09-06
A compound represented by the following formula ##STR1## wherein R.sup.1 represents a hydrogen atom, an acyl group or an alkoxycarbonyl group; X.sup.1 represents an alkylene group having 3 to 6 carbon atoms, a 1,4-cyclohexylene group, or a 1,4-phenylene group, the alkylene group may be substituted by an alkyl group having 1 to 6 carbon atoms, and the 1,4-phenylene group may be substituted by 1 or 2 substituents selected from halogen atoms and alkoxy groups having 1 to 6 carbon atoms; R.sup.2 represents a hydrogen atom or a hydroxyl group and R.sup.3 represents hydrogen atom, or R.sup.2 and R.sup.3 together may form an oxo group (.dbd.O), and when X.sup.1 is other than the 1,4-phenylene group, R.sup.2 represents a hydrogen atom and R.sup.3 represents a bond between the carbon atoms to which R.sup.3 is bonded and that carbon atom of X.sup.1 which is adjacent to said carbon atom; X.sup.2 represents an alkylene group having 1 to 5 carbon atoms which may be substituted by an alkyl group having 1 to 6 carbon atoms or an amino group; and R.sup.4 represents the group --COOR.sup.5, --CH.sub.2 OR.sup.6 or --CONR.sup.7 R.sup.8 in which R.sup.5 represents a hydrogen atom or an alkyl group having 1 to 6 carbon atoms, R.sup.6 represents a hydrogen atom or an acyl group having 1 to 6 carbon atoms, and R.sup.7 and R are identical or different and represent a hydrogen atom or an alkyl group having 1 to 6 carbon atoms or taken together may form a 5- or 6-membered ring; or an acid addition salts of said compound wherein R.sup.1 represents a hydrogen atom or X.sup.2 represents an alkylene group having an amino group, or salts of said compound wherein R.sup.5 represents a hydrogen atom. The compounds represented by the above formula or their pharmaceutically acceptable salts are useful as anti-ulcer agents. The present invention also provides a process for producing the compounds or their pharmaceutically acceptable salts, which comprises acylating a protected derivative at the amino group of a corresponding acid halide with a corresponding substituted benzene in the presence of a Lewis acid; or reducing a corresponding compound in the presence of an inert solvent under conditions which induce reduction of the carbonyl group of said corresponding compound without substantially reducing the phenylene group of said corresponding compound; or dehydrating a corresponding compound.
该化合物由以下公式表示##STR1## 其中R.sup.1代表氢原子、酰基或烷氧羰基;X.sup.1代表具有3至6个碳原子的烷基基团、1,4-环己基基团或1,4-苯基基团,该烷基基团可被具有1至6个碳原子的烷基基团取代,而1,4-苯基基团可被1或2个卤原子和具有1至6个碳原子的烷氧基团中选择的取代基所取代;R.sup.2代表氢原子或羟基,R.sup.3代表氢原子,或R.sup.2和R.sup.3一起可以形成氧羰基(.dbd.O),当X.sup.1不是1,4-苯基基团时,R.sup.2代表氢原子,R.sup.3代表与R.sup.3结合的碳原子和X.sup.1中邻近所述碳原子之间的键;X.sup.2代表具有1至5个碳原子的烷基基团,该基团可被具有1至6个碳原子的烷基基团或氨基取代;R.sup.4代表基团--COOR.sup.5、--CH.sub.2 OR.sup.6或--CONR.sup.7 R.sup.8,其中R.sup.5代表氢原子或具有1至6个碳原子的烷基基团,R.sup.6代表氢原子或具有1至6个碳原子的酰基,而R.sup.7和R是相同或不同,代表氢原子或具有1至6个碳原子的烷基基团,或者一起形成一个5-或6-成员环;或者该化合物的酸盐,其中R.sup.1代表氢原子或X.sup.2代表具有氨基的烷基基团,或者该化合物的盐,其中R.sup.5代表氢原子。上述公式所表示的化合物或其药用盐作为抗溃疡剂是有用的。本发明还提供了一种制备该化合物或其药用盐的方法,包括在路易斯酸存在下,通过使相应酸卤衍生物在相应取代苯存在下酰化相应酸卤衍生物的氨基基团;或者在惰性溶剂存在下还原相应化合物,在诱导还原所述相应化合物的羰基但几乎不还原所述相应化合物的苯基团的条件下;或者脱水相应化合物。