Table of Contents
Metal-Based Drugs
Volume 1 (1994), Issue 1, Pages 65-72

Synthesis, Structure and Biological Activity of 6-R3Si(Ge, Sn)-Substituted 5-Fluorouracils

Latvian Institute of Organic Synthesis, 21 Aizkraukles, Riga LV-1006, Latvia

Received 3 August 1993; Accepted 9 September 1993

Copyright © 1994 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Direct lithiation of 1-(2-tetrahydrofuryl)-5-fluorouracil (Ftorafur) has been investigated. The treatment of ftorafur with lithium diisopropylamide (LDA)at –70℃ in ether-hexane, followed by the reaction with various electrophiles afforded the corresponding 6-substituted silicon, germanium and tin derivatives of ftorafur. The results of biological investigation indicate the ability of germanium–modified nucleoside analogues to interfere with transcription and replication processes.