Synthesis and Biological Evaluation of Pyridooxazine–Tetrahydroisoquinoline Derivatives as MDR Modulators
作者:Chen Ma、Shao-Jie Liu、Liang Xin、Qun Zhang、Kai Ding、J. R. Falck、Dong-Soo Shin
DOI:10.1246/cl.2006.1010
日期:2006.9
Pyridooxazine–tetrahydroisoquinoline derivatives were designed and synthesized for MDR modulating activity. Pyridooxazin-2-one scaffolds were constructed in a one-pot annulation of N-substituted-2-chloroacetamides with 2-bromo-3-hydroxy pyridine via Smiles rearrangement. The Pictet–Spengler cyclization to form tetrahydroisoquinoline ring afforded target compounds in 17–37% overall yields. Some of these compounds exhibited multidrug resistance (MDR) reversing activity.
Chemical Constitution, Electrochemical, Photographic and Allergenic Properties of p-Amino-N-dialkylanilines<sup>1</sup>
作者:R. L. Bent、J. C. Dessloch、F. C. Duennebier、D. W. Fassett、D. B. Glass、T. H. James、D. B. Julian、W. R. Ruby、J. M. Snell、J. H. Sterner、J. R. Thirtle、P. W. Vittum、A. Weissberger
DOI:10.1021/ja01151a037
日期:1951.7
Novel formation of 1,3-oxazepine heterocycles via palladium-catalyzed intramolecular coupling reaction
The oxazepine ring systems containing pyridazinone moiety were constructed via palladium-catalyzed intramolecular coupling reaction. The best conditions for this reaction were Pd(OAc)(2) as a palladium source, 1,1'-bis(diphenylphosphino)-ferrocene (DPPF) as the ligand, and K2CO3 as base at 80 degrees C in toluene. The products have potential applications as biological and medicinal relevant compounds. (c) 2006 Elsevier Ltd. All rights reserved.