| 摘要 |
PCT No. PCT/EP91/00324 Sec. 371 Date Aug. 21, 1992 Sec. 102(e) Date Aug. 21, 1992 PCT Filed Feb. 21, 1991 PCT Pub. No. WO91/13064 PCT Pub. Date Sep. 5, 1991.The present invention relates to a novel process for preparing uracil derivatives useful as intermediates in the synthesis of uridines having antiviral or antitumor activity or useful as coadjuvants in antiviral therapy, characterized by converting a compound of the formula II into its mesylate derivative of the formula III which is the reduced to give the desired compound of the formula I: (* CHEMICAL STRUCTURE *) (* CHEMICAL STRUCTURE *) in which R1 is H, halogen, alkyl, aryl or aralkyl. |
