| 摘要 |
Novel 5-fluorouracil derivatives of the following general formula <IMAGE> wherein R1 is hydrogen, C1-C5alkyl, C6-C10aryl, C7-C10 aralkyl, C1-C12alkanoyl, C2-C6alkoxycarbonyl, C1-C5alkanoyloxymethyl, carbamoyl or tri-C1-C5alkylsilyl; R2 is hydrogen, C1-C5alkyl, C6-C10aryl or C7-C10aralkyl; X is hydrogen, halogen or C2-C6alkoxycarbonyl; Y is O, NR' (R' is hydrogen or C1-C5alkyl), S, SO or SO2; and n is an integer of 1-3. which are orally administrable anti-tumor agents.
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