作者:Xiang Wei Liao、Wen Fang Dong、Wei Liu、Bao He Guan、Zhan Zhu Liu
DOI:10.1002/jhet.248
日期:——
Using L-tyrosine as a chiral starting material, we developed an efficient synthetic route to (–)-MY336a. A key step in the sequence is a highly regio- and diastereoselective intermolecular Pictet-Spengler cyclization reaction between amino alcohol and benzyloxyacetaldehyde. J. Heterocyclic Chem., (2010).
Total synthesis of the β-adrenergic receptor antagonist, the tetrahydroisoquinoline MY336-a and its epimer
作者:Teodoro S. Kaufman
DOI:10.1039/p19960002497
日期:——
The first total synthesis of the novel B-adrenergic receptor antagonist MY336-a 1 and its epimer 2 has been achieved from 2,3-dimethoxytoluene, by Jackson cyclisation of N-benzyl-N-tosylamido acetals, Lewis acid-mediated addition of silicon-based nucleophiles to p-tosyliminium ions and base-catalysed epimerisation of 1-substituted hydroxytetrahydroisoquinolines, being key steps.