Highly stereoselective construction of trans(2,3)-cis(2,6)-trisubstituted piperidines: An application to the chiral synthesis of Dendrobates alkaloids
作者:Naoki Toyooka、Keiko Tanaka、Takefumi Momose、John W Daly、H.Martin Garraffo
DOI:10.1016/s0040-4020(97)00641-8
日期:1997.7
indolizidine and 1,4-disubstitutedquinolizidine system found in Dendrobates alkaloids has been developed. The key step for this synthesis is the highly stereoselective Michael reaction of a didehydropiperidinecarboxylate (1) to afford a trans(2,3)-cis(2,6)-trisubstituted piperidine. In this manner, the chiral formal synthesis of indolizidines 207A and 209B and the total synthesis of indolizidines
Asymmetric Synthesis of the Indolizidine Alkaloids 207A, 209B, and 235B': 6-Substituted 2,3-Didehydropiperidine-2-carboxylate as a Versatile Chiral Building Block
作者:Takefumi Momose、Naoki Toyooka
DOI:10.1021/jo00084a004
日期:1994.3
The asymmetric synthesis of 5-substituted 8-methylindolizidines 1-3 was,achieved via the highly stereocontrolled Michael reaction of the title compound 5.