Convergent Synthesis of Naphthylisoquinoline Alkaloids: Total Synthesis of (+)-<i>O</i>-Methylancistrocline
作者:Phung Chau、Ivona R. Czuba、Mark A. Rizzacasa、Gerhard Bringmann、Klaus-Peter Gulden、Manuela Schäffer
DOI:10.1021/jo9607119
日期:1996.1.1
A highly convergent synthesis of the methyl ether derivative 2a of the naphthylisoquinolinealkaloid ancistrocline (2) is described. The key step involves a stereoselective biaryl coupling between the chiral oxazoline 3 and the Grignard reagent 4 derived from the optically active tetrahydroisoquinoline 8. The atropisomeric mixture was then converted to the separable acetamides 11 and 12, which were