Stereoelectronic Effect on One-Electron Reductive Release of 5-Fluorouracil from 5-Fluoro-1-(2‘-oxocycloalkyl)uracils as a New Class of Radiation-Activated Antitumor Prodrugs
作者:Mayuko Mori、Hiroshi Hatta、Sei-ichi Nishimoto
DOI:10.1021/jo000245u
日期:2000.7.1
possesses normal geometry and bond length in the ground state. MO calculations by the AM1 method demonstrated that the LUMO is primarily localized at the pi* orbital of C(5)-C(6) double bond of the 5-fluorouracil moiety, and that the LUMO + 1 is delocalized between the pi* orbital of 2'-oxo substituent and the sigma* orbital of adjacent C(1')-N(1) bond. The one-electron reductive release of 5-fluorouracil