据报道有效的蛋白激酶C抑制剂钙磷蛋白A,B,C和D以及各种结构类似物的总合成。利用对映纯菲舍尔卡宾络合物的氨基苯甲酸酯化反应制备五取代的萘胺。优化侧链取代基后,将萘胺转化为邻萘醌,然后使用三氟乙酸和空气进行仿生氧化二聚,得到阻转异构体per醌的1:2 P / M混合物。热平衡至3:1 P:M的对映异构体比例,并分离出ylene醌,然后进行侧链去对称和官能化,仅用十二个步骤就可以从市售起始原料完全合成对映体和非对映体纯钙黄素C。此外,
Perylenequinone Natural Products: Enantioselective Synthesis of the Oxidized Pentacyclic Core
作者:Carol A. Mulrooney、Barbara J. Morgan、Xiaolin Li、Marisa C. Kozlowski
DOI:10.1021/jo9013832
日期:2010.1.1
An enantioselective approach to the perylenequinone core found in the mold perylenequinone natural products is outlined. Specifically, the first asymmetric syntheses of helical chiral perylenequinones absent any additional stereogenic centers are described. Key elements of the synthetic venture include a catalytic enantioselectivebiaryl coupling, a PIFA-induced naphthalene hydroxylation, and a palladium-mediated