Methyl-isoxazole-acetic acid, -acetamide and -acetonitrile derivs.

摘要

5-methyl-isoxazole -3-acetic acid, -3-acetamide and -3-acetonitrile derivs. of formula (I).X, Y=Ch, optimally activated carboxyl, -COO2 or -CONRR', or X+Y=-CO-O-CO-; Z=1-6C alkyl; R,R'= H, phenyl or benzyl; or NRR'=heterocycle. - Specifically claimed are 10 cpds. (I), including 5-methyl-4-cyano -isoxazole-3-acetic acid; N-benzyl-5-methyl -4 cyano-isoxazole -3-acetomide; and 6,7-dihydro-4 H-pyrano-(3,4-c) isoxazole-4,6-dione.