Medium benzene-fused oxacycles with the 5-fluorouracil moiety: synthesis, antiproliferative activities and apoptosis induction in breast cancer cells
作者:Estrella Saniger、Joaquı́n M Campos、Antonio Entrena、Juan A Marchal、Inés Suárez、Antonia Aránega、Duane Choquesillo、Juán Niclós、Miguel Á Gallo、Antonio Espinosa
DOI:10.1016/s0040-4020(03)00871-8
日期:2003.7
On the basis of the increase in lipophilicity, novel benzannelated six- and seven-membered derivatives have been synthesized, starting from 2-hydroxybenzyl alcohols, 2-hydroxybenzaldehydes, and catechol. The X-ray structure of (RS)-1-(2,3-dihydro-5H-1,4-benzodioxepin-3-yl)-5-fluorouracil (5) is presented and compared with its conformational analysis at the semiempirical (AM1) and ab initio (6-31G*) levels and NOE effects. A good agreement between both experimental and theoretical data was found showing a chair conformation for the 2,3-dihydro-5H-1,4-dioxepin ring and an axial orientation of the 5-FU moiety on the C3 position. Compounds 5 and (RS)-1-(7methoxy-2,3-dihydro-5H-1,4-benzodioxepin-3-yl)-5-fluorouracil (6) were found to be the most potent inhibitor of MCF-7 cells growth. (RS)1-(2,3-Dihydrobenzoxepin-2-yl)-5-fluorouracil (8) induced apoptosis up to 57.33% of cell population after 24 It. (C) 2003 Elsevier Science Ltd. All fights reserved.