作者:Ivana Ozimec Landek、Dijana Pešić、Mladen Merćep、Barbara Stanić、Milan Mesić
DOI:10.1002/jhet.605
日期:2011.7
Synthesis of a novel class of fused heterotetracyclic compounds, 8H‐1‐thia‐8‐aza‐dibenzo[e,h]azulenes (VII), is described. Starting N‐benzoyl‐protected 5H‐dibenzo[b,f]azepine (XI, PG = Bz) was oxidized to 5‐benzoyl‐10,11‐epoxy‐10,11‐dihydro‐5H‐dibenzo[b,f]azepine (2), which subsequently rearranged in Lewis acid‐induced epoxide ring opening to give 5‐benzoyl‐5,11‐dihydro‐10H‐dibenzo[b,f]azepin‐10‐one
描述了新型新型稠合杂环四环化合物8 H -1 thia 8氮杂二苯并[ e,h ] azulenes(VII)的合成。起始N-苯甲酰基保护的5 H-二苯并[ b,f ]氮杂((XI,PG = Bz)被氧化为5-苯甲酰基-10,11-环氧-10,11-二氢-5 H-二苯并[ b,f ] azepine(2),其随后在路易斯酸诱导的环氧基开环中重排,得到5-苯甲酰基-5,11-二氢-10 H-二苯并[ b,f ] azepin-10-1(3)。3的Vilsmeier反应提供了β-氯乙烯基醛4,该醛易于与2巯基乙酸乙酯环化形成二苯并ze庚因[4,5]稠合的噻吩结构5。取代基在C-2位置5的进一步转化和N脱保护导致最终的氨基烷氧基衍生物9。所有具有四环骨架的化合物均经过体外抗炎活性测试。J.杂环化学。(2011)。