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.