5-Fluorouracil derivatives. XII. Synthesis and antitumor activity of .ALPHA.-alkylthiomethyl-, .ALPHA.-alkylsulfinylmethyl-, .ALPHA.-alkylsulfonylmethyl-, and .ALPHA.-acylthiomethyl-5-fluorouracils.
5-Fluorouracil derivatives. XII. Synthesis and antitumor activity of .ALPHA.-alkylthiomethyl-, .ALPHA.-alkylsulfinylmethyl-, .ALPHA.-alkylsulfonylmethyl-, and .ALPHA.-acylthiomethyl-5-fluorouracils.