The condensation oligomers of 5-fluorouracil were prepared by reaction of 2
4-bis-(trimethyl-silyloxy)-5-fluoropyrimidine) with various dicarboxylic chlorides
e.g.The structures of obtained oligomers were characterized by IR and the oligomers were then hydrolyzed in acid
alkaline and neutral media at room temperature respectively. The amount of 5-fluorouracil released was quantitated by measuring its UV absorbance at 265.5nm. However in the case of oligomers containing phenylene moiety
5-fluorouracil was not detected when the hydrolysis was conducted in acid or neutral medium
while in the case of oligomers containing methylene moiety
hydrolysis proceeded easily in acid
alkaline and neutral media.
Abstract
The condensation oligomers of 5-fluorouracil were prepared by reaction of 2
4-bis-(trimethyl-silyloxy)-5-fluoropyrimidine) with various dicarboxylic chlorides
e.g.The structures of obtained oligomers were characterized by IR and the oligomers were then hydrolyzed in acid
alkaline and neutral media at room temperature respectively. The amount of 5-fluorouracil released was quantitated by measuring its UV absorbance at 265.5nm. However in the case of oligomers containing phenylene moiety
5-fluorouracil was not detected when the hydrolysis was conducted in acid or neutral medium
while in the case of oligomers containing methylene moiety
hydrolysis proceeded easily in acid
alkaline and neutral media.
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