Total Synthesis of Hibispeptin A via Pd-Catalyzed C(sp<sup>3</sup>)–H Arylation with Sterically Hindered Aryl Iodides
作者:Gang He、Shu-Yu Zhang、William A. Nack、Ryan Pearson、Javon Rabb-Lynch、Gong Chen
DOI:10.1021/ol503347d
日期:2014.12.19
To access the key Ile-Hpa pseudodipeptide motif in hibispeptins, a series of bidentate carboxamide-based auxiliary groups have been explored to facilitate the palladium-catalyzedarylation of unactivated γ-C(sp3)–H bonds of Ile precursor with aryl iodides. A new pyridylmethylamine-based auxiliary group PR is introduced, which permits the use of more sterically hindered ortho-substituted aryl iodide