Synthesis of Vicinal Stereogenic Tertiary and Quaternary Centers Using Chiral Bicyclic Lactams and Diastereoselective Protonation. Asymmetric Synthesis of (+)-Laurene
作者:Jacob B. Schwarz、A. I. Meyers
DOI:10.1021/jo00125a042
日期:1995.10
The chiral bicyclic lactam 5, previously reported in the synthesis of(-)-alpha-cuparenone, was used to construct the more complex title compound 2. A mixture of cyclopentenones 8 and 9 was subjected to deprotonation/reprotonation to provide 8 in high diastereomeric excess. Transformation of 8 to the title compound was achieved by catalytic hydrogenation to 13, followed by methylenation with the Tebbe reagent.
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