Studies of antitumor-active 5-fluorouracil derivatives. I. Synthesis of N-phthalidyl 5-fluorouracil derivatives.
作者:SUSUMU KAMATA、NOBUHIRO HAGA、TAKEAKI MATSUI、WATARU NAGATA
DOI:10.1248/cpb.33.3160
日期:——
Several 5-fluorouracil derivatives in which the phthalidyl (1, 3-dihydro-3-oxoisobenzofuran-1-yl) group, appropriately substituted on its benzene ring, is substituted at the N (1)-or N (3)-position or at both positions were synthesized, and their antitumor activities were evaluated. Among these compounds, 1-(1, 3-dihydro-3-oxoisobenzofuran-1-yl)-5-fluorouracil (3a, 590-S) was shown to be markedly active against several experimental tumor systems. Several methods for a simple and efficient large-scale preparation of 3a were examined. The large-scale preparation of 3a was effected most efficiently by the condensation of 5-fluorouracil with the quaternary ammonium salt of 3-bromophthalide in the presence of a base. The synthesis of (+)- and (-)-3a is also described.
合成了几种5-氟尿嘧啶衍生物,其中苯并二氢呋喃酮(1,3-二氢-3-氧异苯并呋喃-1-基)基团在其苯环上适当取代,并在N(1)或N(3)位或两个位置上进行取代,并评估了它们的抗肿瘤活性。在这些化合物中,1-(1,3-二氢-3-氧异苯并呋喃-1-基)-5-氟尿嘧啶(3a,590-S)显示出对几种实验性肿瘤系统有显著的活性。研究了几种简单高效的3a大规模制备方法。通过5-氟尿嘧啶与3-溴邻苯二甲酰亚胺的季铵盐在碱存在下缩合,最有效地实现了3a的大规模制备。还描述了(+)-和(-)-3a的合成。