(+)-Ancistrocline, a naphthylisoquinoline alkaloid from Ancistrocladus tectorius
摘要:
The completion of the structural elucidation of (+)-ancistrocline, a naphthylisoquinoline alkaloid from Ancistrocladus tectorius, by partial synthesis from the known alkaloid, ancistrocladinine, is described. By this transformation, the constitution of (+)-ancistrocline is confirmed, and its stereostructure established as IR,3S,5S.
(+)-Ancistrocline, a naphthylisoquinoline alkaloid from Ancistrocladus tectorius
作者:Gerhard Bringmann、Lioba Kinzinger
DOI:10.1016/0031-9422(92)83505-s
日期:1992.9
The completion of the structural elucidation of (+)-ancistrocline, a naphthylisoquinoline alkaloid from Ancistrocladus tectorius, by partial synthesis from the known alkaloid, ancistrocladinine, is described. By this transformation, the constitution of (+)-ancistrocline is confirmed, and its stereostructure established as IR,3S,5S.
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