| 摘要 |
<CHEM> wherein R and R<3> independently represent hydrogen or alkyl; R<1> represents hydrogen, alkyl, benzyl or benzoyl; R<2> represents hydrogen or alkyl; or R<1> and R<2> taken together with the adjacent nitrogen atom form a saturated heterocyclic ring containing from 5 to 7 ring atoms and optionally including a further heteroatom selected from oxygen and nitrogen; Z is O, S or CH2; X is S or O; n is 2 or 3 when Z is O or S and n is 1, 2 or 3 when Z is CH2; R<5> is H or CH3; m is 1, 2 or 3; A is (C1-C5)alkylene or (CH2)qX(CH2)p wherein q and p are individually 0, 1, 2 or 3 and the sum of q plus p is 0-4, and B is H, CH3, cycloalkyl, a heteroaryl group optionally substituted with one or two alkyl, alkoxy, halo, hydroxy or amino groups; naphtyl, (1,3-benzodioxolyl), 2,3-dihydro-1,4-benzodioxinyl, phenyl optionally substituted with one or two alkyl, alkoxy, halo, OH, benzyloxy, CF3, alkyl-O-alkylene, phenoxy or di[alkyl]aminoalkylene groups; and their pharmaceutically-acceptable salts are effective anti-ulcer agents. |
