Total Synthesis of the Calphostins: Application of Fischer Carbene Complexes and Thermodynamic Control of Atropisomers
作者:Craig A. Merlic、Courtney C. Aldrich、Jennifer Albaneze-Walker、Alan Saghatelian、Jerome Mammen
DOI:10.1021/jo0014663
日期:2001.2.1
perylenequinones. Thermal equilibration to a 3:1 P:M atropisomeric ratio and separation of the perylenequinones followed by side chain desymmetrization and functionalization led to the total synthesis of enantio- and diastereomerically pure calphostin C in only twelve steps from commercially available starting materials. In addition, calphostins A, B, D, and several structural analogues were prepared to evaluate
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,