Abstract The 2,3,4,5-tetrahydro-1H-benzo[2,3]benzofuro[6,5-b]azepine skeleton was built starting from dibenzofuran via 3-aminodibenzofuran, creating the 5-methylene-substituted azepine ring by an intramolecular Heck cyclization. Subsequent modifications led to the endocyclic 4,5-unsaturated analog, the dihydro product, and N-methyl and N-acylated derivatives. All the compounds were obtained in high
摘要 2,3,4,5-四氢-1H-苯并[2,3]
苯并呋喃[6,5-b]氮杂环以
二苯并呋喃为原料,经
3-氨基二苯并呋喃,生成5-亚甲基取代氮杂环分子内 Heck 环化。随后的修改导致了内环 4,5-不饱和类似物、二氢产物以及 N-甲基和 N-酰化衍
生物。所有化合物均以高收率获得并得到充分表征。在野生型和
顺铂抗性人卵巢癌
细胞系(分别为 A2780 和 A2780cisR)中的初步增殖试验表明,这些化合物具有中等细胞毒性,与
顺铂抗性没有显着差异。N-乙酰基-5-亚甲基类似物 3 (IC50 = 10 μM),唯一一种与苯环共轭的环外双键,其活性至少是该系列其他成员的两倍,表明这种结构特征可能与更高的细胞毒性有关。图形概要