Synthesis, biological evaluation, and molecular modeling studies of novel heterocyclic compounds as anti-proliferative agents
摘要:
Two novel series of heterocyclic compounds have been synthesized. In first series, isatin was allowed to react with substituted aromatic/cyclic carbonyl compounds to get desired mannich bases (2a-e). In second series, 4,5-disubstituted oxazoles (6a-p) were synthesized. Eight compounds (2c, 6a, 6e, 6f, 6i, 6j, 6m, and 6n) were screened for anticancer activity in 60 cell lines. Compound 2c, 1-[(4,7,7-trimethyl-3-oxobicyclo[2.2.1]heptan-2-yl)methyl]indoline-2,3-dione, showed maximum activity and thus, selected for further evaluation at five dose level screening. Furthermore, molecular docking studies of compounds 2c into the colchicine-binding site of tubulin, revealed possible mode of inhibition by the compound.
The present invention provides compounds of Formula I: and pharmaceutically acceptable salts or solvates thereof, as modulators of liver X receptors (LXR), compositions comprising any of such novel compounds, methods of using these compounds or compositions as medicaments for prevention or treatment of diseases or disorders related to liver X receptor (LXR), as well as methods of preparing these LXR modulators and using them in the manufacture of medicaments.
Catalytic Enantioselective Addition of Organometallic Reagents to <i>N</i>-Formylimines Using Monodentate Phosphoramidite Ligands
作者:Maria Gabriella Pizzuti、Adriaan J. Minnaard、Ben L. Feringa
DOI:10.1021/jo702140f
日期:2008.2.1
The asymmetricsynthesis of protected amines via the copper/phosphoramidite-catalyzed addition of organozinc and organoaluminum reagents to N-acylimines, generated in situ from aromatic and aliphatic α-amidosulfones, is reported. High yields of optically active N-formyl-protected amines and enantioselectivities up to 99% were obtained. Under the reaction conditions, partial oxidation of the phosphoramidite
The base-free van Leusen reaction of cyclic imines on water: synthesis of <i>N</i>-fused imidazo 6,11-dihydro β-carboline derivatives
作者:Killari Satyam、V. Murugesh、Surisetti Suresh
DOI:10.1039/c9ob00660e
日期:——
imidazoles has been demonstrated on water under base-free conditions. The reaction of dihydro β-carboline imines and p-toluenesulfonylmethyl isocyanides furnished the corresponding substituted N-fused imidazo 6,11-dihydro β-carboline derivatives in very good yields under ambient conditions. The use of deuteriumoxide (D2O) as a solvent enabled the incorporation of deuterium isotopes in the imidazole ring
malonates to in situ generated N-formylimines of aromatic aldehydes was achieved underphase-transfercatalysis using Cinchona alkaloids-derived quaternaryammoniumsalts. The resulting β-formamidomalonates have been efficiently converted into β-aryl-β-isocyano esters. Their utility in the multicomponent Ugi reaction with chiral cyclic imines has been demonstrated.
Organocatalyzed stereoselective construction of N-formylpiperidines via a Michael-aza-Henry-hemiaminalization reaction cascade
作者:Ruchi Chawla、Ankita Rai、Atul K. Singh、Lal Dhar S. Yadav
DOI:10.1016/j.tetlet.2012.07.097
日期:2012.9
An efficient asymmetricsynthesis of N-formylpiperidines via an organocatalytic Michael-aza-Henry-hemiaminalization reaction cascade of an aldehyde, a nitroalkene, and an N-arylideneformamide is reported. The reaction is triggered by diphenylprolinol trimethylsilyl ether and creates two C–C and one C–N bonds leading to the formation of highly enantio-enriched N-formylpiperidines with five contiguous