Copper-Mediated Oxidative Functionalization of C(sp<sup>3</sup>)–H Bonds with Isoquinolines: Two-Step Synthesis of 5-Oxaprotoberberinones
作者:Dingyi Wang、Rongxing Zhang、Ruihong Deng、Sen Lin、Shengmei Guo、Zhaohua Yan
DOI:10.1021/acs.joc.6b02145
日期:2016.11.18
functionalization of C(sp3)–H bonds with isoquinolines via a radicalprocess without ligands was achieved. The present system exhibits a novel pathway for the preparation of N-alkyl (benzyl) isoquinolin-1(2H)-ones in moderate to high yields. In addition, this procedure provides a simple method to afford 5-oxaprotoberberinones and their derivatives in two steps.
Synthesis of novel 5-oxaprotoberberines as bioisosteres of protoberberines
作者:Yifeng Jin、Daulat Bikram Khadka、Su Hui Yang、Chao Zhao、Won-Jea Cho
DOI:10.1016/j.tetlet.2014.01.020
日期:2014.2
5-Oxaprotoberberinones and 5-oxaprotoberberinium were synthesized as bioisosteres of protoberberines. 5-Oxaprotoberberinones were prepared by linking phenol with the isoquinolone ring of 3-phenolisoquinolones by methyleneoxy bridge, while the quaternary 5-oxaprotoberberinium salt was synthesized by reduction and oxidation of the lactam moiety of 5-oxaprotoberberinone.