A total synthesis of streptonigrone, 1, is described, which incorporates a one-step synthesis of substituted pyridones devised in our laboratory. Other aspects of the synthesis that differentiate the present approach from previous ones are the use of a Conrad - Limpach reaction, rather than the customary Friedlander methodology, to assemble the quinoline segment of 1, and the implementation of an anionic sequence for the functionalization of a key pyridone intermediate.
A total synthesis of streptonigrone, 1, is described, which incorporates a one-step synthesis of substituted pyridones devised in our laboratory. Other aspects of the synthesis that differentiate the present approach from previous ones are the use of a Conrad - Limpach reaction, rather than the customary Friedlander methodology, to assemble the quinoline segment of 1, and the implementation of an anionic sequence for the functionalization of a key pyridone intermediate.
Synthetic and Mechanistic Studies on the Solvent-Dependent Copper-Catalyzed Formation of Indolizines and Chalcones
作者:María José Albaladejo、Francisco Alonso、María José González-Soria
DOI:10.1021/acscatal.5b00417
日期:2015.6.5
formation from aldehydes and alkynes, a new reaction pathway involving propargyl amines as intermediates that do not undergo rearrangement is presented. The formation of indolizines or chalcones is driven by inductive and solvent effects, with a wide array of both being reported. In both reactions, the nanoparticulate catalyst has been shown to be superior to some commercially available copper catalysts
Synthesis of Indolizines and Heterocyclic Chalcones Catalyzed by Supported Copper Nanoparticles
作者:María José Albaladejo、Francisco Alonso、Miguel Yus
DOI:10.1002/chem.201204305
日期:2013.4.22
Solvent decides: Versatile coppernanoparticles (Cu NPs) on activated carbon have been found to catalyze the multicomponent synthesis of indolizines in dichloromethane and the synthesis of heterocyclicchalcones in the absence of solvent, in both cases, from pyridine‐2‐carbaldehyde derivatives, secondary amines, and terminal alkynes (see scheme).
Enantio- and Diastereoselective Variations on α-Iminonitriles: Harnessing Chiral Cyclopropenimine-Thiourea Organocatalysts
作者:Hooseung Lee、Hyeongwoo Nam、Sarah Yunmi Lee
DOI:10.1021/jacs.3c09911
日期:2024.2.7
Chiral 1-pyrrolines containing a nitrile motif serve as crucial structural scaffolds in biologically active molecules and exhibit diversity as building blocks owing to their valuable functional groups; however, the asymmetric synthesis of such compounds remains largely unexplored. Herein, we present an enantio- and diastereoselective method for the synthesis of α-chiral nitrile-containing 1-pyrroline
FAMILY OF PFKFB3 INHIBITORS WITH ANTI-NEOPLASTIC ACTIVITIES
申请人:Tapolsky Gilles
公开号:US20120177749A1
公开(公告)日:2012-07-12
A methods and compounds for inhibiting 6-phosphofructo-2-kinase/fructose-2,6-bisphosphatase 3 (PFKFB3) are described. Also described are methods of inhibiting cell proliferation, treating cancer, and screening compounds to determine their ability to inhibit PFKFB3.