| 摘要 |
Oxazol deriv. I useful in treatment of acute hypersensi tivity disorders e.g asthma was prepd. by the reaction of II (R1 = 1-6C alkyl, 2-5C alkenyl, 3-6C alkynyl, 2-6C alkoxyalkyl, 2-6C carboxyalkyl, 1-6C haloalkyl, 3-10C cycloalkyl, 3-10C cycloalkylmethyl, et al ; R2 = 1-8C alkyl, 2-5C alkenyl,l-5C halokyl, 3-10C cycoalkyl, 3-10C cyclomethyl, et al ; R3 , R4 = H, OH, hydroxymethyl, 1-4C alkyl, 3-5C acyloxyalkyl, halogen substd. phenyl) with acid deriv. of R2-COX (X = H) or OCOR2
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