Organocatalytic [4 + 2] cyclocondensation of α,β-unsaturated acyl chlorides with imines: highly enantioselective synthesis of dihydropyridinone and piperidine derivatives
作者:Wen-Qiang Jia、Xiang-Yu Chen、Li-Hui Sun、Song Ye
DOI:10.1039/c4ob00114a
日期:——
alkaloid-catalyzed [4 + 2] cyclocondensation of α,β-unsaturated acyl chlorides with imines is developed to give the corresponding substituted dihydropyridinones in good yields with high to excellent enantioselectivities. Reduction of the dihydropyridinones gave highly optically active substituted tetrahydropyridinone and piperidine derivatives.
N-Heterocyclic Carbene-Catalyzed Cyclization of Unsaturated Acyl Chlorides and Ketones
作者:Li-Tao Shen、Pan-Lin Shao、Song Ye
DOI:10.1002/adsc.201100178
日期:2011.8
synthesis of optically active trifluoromethyl dihydropyranones and spirocyclic oxindole-dihydropyranones has been realized by the chiral N-heterocyclic carbenes-catalyzed cyclization of α,β-unsaturated β-methylacyl chlorides with activated trifluoromethyl ketones or isatin derivatives.
Development of new scaffolds as reversible tissue transglutaminase inhibitors, with improved potency or resistance to glutathione addition
作者:Kim Y. P. Apperley、Isabelle Roy、Vincent Saucier、Nicholas Brunet-Filion、Sara-Pier Piscopo、Christophe Pardin、Élise De Francesco、Catherine Hao、Jeffrey W. Keillor
DOI:10.1039/c6md00565a
日期:——
Starting from known reversible inhibitor CP4d, we have designed two new classes of inhibitors, improving both potency (22b) and glutathione resistance (27d).