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.
Synthesis of an isomer of the renieramycin skeleton from L-tyrosine
作者:Wei Liu、Wen Fang Dong、Xiang Wei Liao、Bao He Guan、Zhan Zhu Liu
DOI:10.1002/jhet.609
日期:2011.3
synthesize (−)‐renieramycin G from L‐tyrosine. It was found that the first intermolecular Pictet–Spengler reaction proceeded successfully to give the correct tetrahydroisoquinoline precursor 6. However, the second intramolecular Pictet–Spengler cyclization step failed to give the desired product, and an isomer of the skeleton of the renieramycins was obtained via 12 steps starting from L‐tyrosine. J