Synthesis of Enantiomerically Pure Morphine Alkaloids: The Hydrophenanthrene Route
作者:Dirk Trauner、Jan W. Bats、Andreas Werner、Johann Mulzer
DOI:10.1021/jo9805394
日期:1998.8.1
A concise, linear, total synthesis of (-)-dihydrocodeinone-a close synthetic precursor of (-)-codeine and (-)-morphine-has been achieved. The carbocyclic core of the alkaloid was provided in the form of a phenanthrenone, which was resolved by chromatography on cellulose triacetate. A cuprate conjugateaddition was used to establish the crucial benzylic quaternary stereocenter and to introduce the C(2)-side