Potentiation of the antitumor activity of α, α, α-trifluorothymidine by the co-administration of an inhibitor of thymidine phosphorylase at a suitable molar ratio in vivo

Abstract excerpt

Trifluorothymidine (FTD) is a thymidine analog that exhibits an antitumor activity through its inhibition of thymidylate synthase and its incorporation into DNA. However, FTD is rapidly hydrolyzed to an inactive form by thymidine phosphorylase (TP). We attempted to augment the antitumor activity of FTD by combining it with a potent and reversible inhibitor of TP, 5-chloro-6-(2-imino-propyrrolidin-1-yl) methyl-2,...

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