作者:Hiroshi Nishino、Yosuke Ito、Shunsuke Jogo、Noriko Fukuda、Ryo Okumura
DOI:10.1055/s-0030-1259977
日期:2011.5
3-oxobutanamides underwent manganese(III)-mediated oxidative intramolecular addition to produce dihydrofuran-fused macrolides and macrocyclic amides from 8 to 26 members. A similar reaction of the oligooxamethylene-tethered ω-alkenyl 3-oxobutanoates also gave dihydrofuran-fused crown ether type macrolides which had a phase-transfer ability with sodium and potassium picrates. The manganese(III)-assisted specific
对低聚亚甲基系的ω-烯基3-氧代丁酸酯和3-氧代丁酰胺进行了锰(III)介导的氧化分子内加成反应,制得了8至26个成员的二氢呋喃稠合大环内酯和大环酰胺。低聚氧杂亚甲基系链的ω-烯基3-氧代丁酸酯的类似反应也得到了二氢呋喃稠合的冠醚型大环内酯,其与苦味酸钠和钾具有相转移能力。锰(III)辅助的特定分子内加成反应可以通过ω-烯基部分与锰(III)烯醇化物的π络合来解释。 分子内加成-大环化-氧化-自由基-冠醚