119349-57-4Relevant articles and documents
Phenylalanine derivative and proteinase inhibitor
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, (2008/06/13)
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) c1 -C4 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) c1 -C4 alkyl which may by substituted with halogen; Y represents STR4 or --OR3 wherein R1 R2 are independently (a) hydrogen, (b) phenyl which may be substituted with (i) benzoyl, (ii) C1 -C4 alkylcarbonyl, (iii) C1 -C4 alkyl which may be further substituted with C1 -C4 alkoxycarbonyl or hydroxycarbonyl, (iv) C2 -C5 alkenyl which may be further substituted with hydroxycarbonyl or C1 -C4 alkoxycarbonyl, (v) C1 -C4 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 C1 -C4 alkyl which may be further substituted with C1 -C4 alkoxycarbonyl, (h) C1 -C6 alkyl which may be substituted with C1 -C4 alkoxy, C1 -C4 alkoxycarbonyl, phenyl, or benzoyl, (i) C5 -C7 cycloalkyl which may be substituted with C1 -C4 alkoxycarbonyl or (j) R1 and R2 may form, with the nitrogen atom attached thereto, (i) pyperazyl which may be substituted on the nitrogen atom with C1 -C4 alkyl which may be further substituted with phenyl, (ii) piperidino which may be substituted with carboxyl or C1 -C4 alkoxycarbonyl, (iii) pyrrolidyl which may be substituted with C1 -C4 alkoxycarbonyl, or (iv) morpholyl; and R3 represents (a) hydrogen, (b) C1 -C6 alkyl which may be substituted with (i) C1 -C4 alkoxy, (ii) pehnyl, or (iii) pyridyl, or (c) pyridyl; or a pharmaceutically acceptable acid salt thereof. This phenylalanine derivative is effective as a proteinase.