著者

山下 純一 武田 節夫 松本 宏 采見 憲男 安本 三治

出版者

公益社団法人日本薬学会

雑誌

Chem. Pharm. Bull. (ISSN:00092363)

巻号頁・発行日

vol.35, pp.2373-2381, 1987

被引用文献数

1

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Various O-alkoxyalkyl derivatives of 2'-deoxy-5-trifluoroniethyluridine(F_3Thd) were synthesized, and the antitumor activities of the compounds against sarcoma 180 were examined by oral administration to mice. Among the formal-type derivatives, 3',5'-di-O-ethoxymethyl (3), 3',5'-di-O-benzyloxyinethyl (12), 5'-O-benzyloxymethyl (13) and 3'-O-benzyloxymethyl (14) compounds showed high activities, which were six-fold higher than that of F_3Thd itself. Since acetal-type derivatives were unstable under acidic conditions, antitumor testing of the compounds was also carried out with co-administration of sodium bicarbonate. 5 '-O-(1-Ethoxypropyl)-F_3Thd (25) and 5'-O-(1-benz:yloxypropyl)-F_3Thd (37) showed the highest activities among the acetal-type derivatives, but the ED_50 values of the compounds were not lower than those of effective formal-type compounds. These O-alkoxyalkyl derivatives of F_3Thd are resistant to degradation by thymidine phosphorylase and are activated by microsornal drug-metabolizing enzymes after absorption.