Pd(II)-Catalyzed Intramolecular Tandem Olefin Amidation/C–H Activation Protocol for the Syntheses of the Protoberberine Class of Natural Products
作者:Dnyaneshwar N. Garad、Santosh B. Mhaske
DOI:10.1021/acs.orglett.6b01868
日期:2016.8.5
activation protocol has been developed for the synthesis of an 8-oxoprotoberberine core. It was successfully applied for the syntheses of (±)-8-oxocanadine, (±)-8-oxotetrahydropalmitine, and (±)-8-oxostylopine, which can be easily converted to the respective protoberberine natural products. The short synthetic route demonstrated would be useful for the synthesis of a large number of natural products and
Conversion of Oxazolidinediones to Isoindoloisoquinolinones via Intramolecular Friedel–Crafts Reaction
作者:Ji-Young Min、Guncheol Kim
DOI:10.1021/jo402345q
日期:2014.2.7
Treatment of oxazolidinediones with TiCl4 in CH2Cl2 resulted in conversion to isoindoloisoquinolinones via intramolecular Friedel–Crafts reaction with extrusion of CO2 in the transformation. The alkaloid nuevamine has been synthesized under these conditions in a regiospecific manner.