| 摘要 |
Certain enol ethers and esters of the formula I <IMAGE> wherein X and Y are hydrogen, fluoro or chloro, R1 is 2- thienyl or benzyl and R is alkanoyl, cycloalkylcarbonyl, phenylalkanoyl, chlorobenzoyl, methoxybenzyl, phenyl, thenoyl, omega alkoxycarbonylalkanoyl, alkoxycarbonyl, phenoxycarbonyl, 1-alkoxyalkyl, 1-alkoxycarbonyloxyalkyl, alkyl, alkylsulphonyl, methylphenylsulphonyl or dialkylphosphonate, are useful as prodrug forms for the known 3-acyl-2-oxindole-1-carboxamide anti-inflammatory and analgesic agents.
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