Synthesis of Chloro-Substituted 6<i>H</i>-Dibenzo[<i>b</i>,<i>d</i>]pyran-6-one Natural Products, Graphislactone G, and Palmariols A and B
作者:Hitoshi Abe、Ishtiaq Jeelani、Atsuro Yonoki、Haruka Imai、Yoshikazu Horino
DOI:10.1248/cpb.c21-00316
日期:2021.8.1
A palladium-mediated intramolecular aryl–aryl coupling reaction was applied to the total synthesis of the bioactive natural products, graphislactone G (1), and palmariols A (2) and B (3), which possess an unusual chloro-subsutituent on the 6H-dibenzo[b,d]pyran-6-one skeleton. Based on the transition state model of the coupling reaction, the mechanistic aspect for the regioselectivity of the aryl–aryl
钯介导的分子内芳基-芳基偶联反应被应用于生物活性天然产物石墨内酯 G ( 1 ) 和棕榈醇 A ( 2 ) 和 B ( 3 )的全合成,它们在 6 上具有不寻常的氯取代基。H- dibenzo[ b , d ]pyran-6-one 骨架。基于偶联反应的过渡态模型,还讨论了芳基-芳基偶联反应区域选择性的机理方面。 全尺寸图像