申请人:Okamoto; Shosuke
公开号:US04873253A1
公开(公告)日:1989-10-10
A phenylalanine derivative having the formula (I): ##STR1## wherein A represents ##STR2## B represents ##STR3## wherein m is 0, 1, or 2 and n is 3, 4, or 5; X represents (a) hydroxy, (b) nitro, (c) amino, (d) phenoxy which may be substituted with (i) halogen or (ii) nitro, (e) c.sub.1 -C.sub.4 alkyloxy which may be substituted wit (i) phenyl or (ii) benzoyl, (f) benzoyl, (g) pyridyloxy which may be substituted with (i) halogen or (ii) nitro, or (h) c.sub.1 -C.sub.4 alkyl which may by substituted with halogen; Y represents ##STR4## or --OR.sup.3 wherein R.sup.1 R.sup.2 are independently (a) hydrogen, (b) phenyl which may be substituted with (i) benzoyl, (ii) C.sub.1 -C.sub.4 alkylcarbonyl, (iii) C.sub.1 -C.sub.4 alkyl which may be further substituted with C.sub.1 -C.sub.4 alkoxycarbonyl or hydroxycarbonyl, (iv) C.sub.2 -C.sub.5 alkenyl which may be further substituted with hydroxycarbonyl or C.sub.1 -C.sub.4 alkoxycarbonyl, (v) C.sub.1 -C.sub.4 alkoxycarbonyl, or (vi) amidino, (c) pyridyl which may be substituted with halogen or carboxyl (d) imidazolyl, (e) pyrimidyl, (f) tetrazolyl, (g) thiazolyl which may be substituted with C.sub.1 -C.sub.4 alkyl which may be further substituted with C.sub.1 -C.sub.4 alkoxycarbonyl, (h) C.sub.1 -C.sub.6 alkyl which may be substituted with C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 alkoxycarbonyl, phenyl, or benzoyl, (i) C.sub.5 -C.sub.7 cycloalkyl which may be substituted with C.sub.1 -C.sub.4 alkoxycarbonyl or (j) R.sup.1 and R.sup.2 may form, with the nitrogen atom attached thereto, (i) pyperazyl which may be substituted on the nitrogen atom with C.sub.1 -C.sub.4 alkyl which may be further substituted with phenyl, (ii) piperidino which may be substituted with carboxyl or C.sub.1 -C.sub.4 alkoxycarbonyl, (iii) pyrrolidyl which may be substituted with C.sub.1 -C.sub.4 alkoxycarbonyl, or (iv) morpholyl; and R.sup.3 represents (a) hydrogen, (b) C.sub.1 -C.sub.6 alkyl which may be substituted with (i) C.sub.1 -C.sub.4 alkoxy, (ii) pehnyl, or (iii) pyridyl, or (c) pyridyl; or a pharmaceutically acceptable acid salt thereof. This phenylalanine derivative is effective as a proteinase.
一种具有以下式子(I)的苯丙氨酸衍生物:##STR1## 其中A表示##STR2## B表示##STR3## 其中m为0、1或2,n为3、4或5;X表示(a)羟基,(b)硝基,(c)氨基,(d)苯氧基,其可以被取代为(i)卤素或(ii)硝基,(e)C.sub.1-C.sub.4烷氧基,其可以被取代为(i)苯基或(ii)苯甲酰基,(f)苯甲酰基,(g)吡啶氧基,其可以被取代为(i)卤素或(ii)硝基,或(h)C.sub.1-C.sub.4烷基,其可以被卤素取代;Y表示##STR4## 或--OR.sup.3,其中R.sup.1和R.sup.2独立地表示(a)氢,(b)苯基,其可以被取代为(i)苯甲酰基,(ii)C.sub.1-C.sub.4烷基羰基,(iii)C.sub.1-C.sub.4烷基,其可以进一步被取代为C.sub.1-C.sub.4烷氧基羰基或羟基羰基,(iv)C.sub.2-C.sub.5烯基,其可以进一步被取代为羟基羰基或C.sub.1-C.sub.4烷氧基羰基,(v)C.sub.1-C.sub.4烷氧基羰基,或(vi)酰胺基,(c)吡啶基,其可以被取代为卤素或羧基,(d)咪唑基,(e)嘧啶基,(f)四唑基,(g)噻唑基,其可以被取代为C.sub.1-C.sub.4烷基,其可以进一步被取代为C.sub.1-C.sub.4烷氧基羰基,(h)C.sub.1-C.sub.6烷基,其可以被取代为C.sub.1-C.sub.4烷氧基、C.sub.1-C.sub.4烷氧基羰基、苯基或苯甲酰基,(i)C.sub.5-C.sub.7环烷基,其可以被取代为C.sub.1-C.sub.4烷氧基羰基或(j)R.sup.1和R.sup.2可以与其连接的氮原子形成(i)吡咯基,其可以在氮原子上被C.sub.1-C.sub.4烷基取代,其可以进一步被取代为苯基,(ii)哌啶基,其可以被羧基或C.sub.1-C.sub.4烷氧基羰基取代,(iii)吡咯烷基,其可以被C.sub.1-C.sub.4烷氧基羰基取代,或(iv)吗啉基;R.sup.3表示(a)氢,(b)C.sub.1-C.sub.6烷基,其可以被取代为(i)C.sub.1-C.sub.4烷氧基,(ii)苯基或(iii)吡啶基,或(c)吡啶基;或其药学上可接受的酸盐。这种苯丙氨酸衍生物对蛋白酶具有有效作用。