δ-Amino β-Keto Esters, a Designed Polyfunctionalized Chiral Building Block for Alkaloid Synthesis. Asymmetric Synthesis of (<i>R</i>)-(+)-2-Phenylpiperidine and (−)-SS20846A
作者:Franklin A. Davis、Bin Chao、Tianan Fang、Joanna M. Szewczyk
DOI:10.1021/ol005580j
日期:2000.4.1
[formula: see text] delta-Amino beta-keto esters 3 and 11 are designed polyfunctionalized chiral building blocks for alkaloidsynthesis and are prepared in one step from the corresponding sulfinimine (N-sulfinyl imine). Concise highly enantioselective four-step syntheses of 2-phenylpiperidine (7) and SS20846A (14) from 3 and 11, respectively, are described.