Synthesis and receptor binding studies of novel 4,4-disubstituted arylalkyl/arylalkylsulfonyl piperazine and piperidine-based derivatives as a new class of σ1 ligands
摘要:
This study presents the synthesis and biological evaluation of a new series of arylalkyliary/alkylsulfonyl piperazine and piperidine-based derivatives as sigma receptor ligands. It was found that a number of halogen substituted sulfonamides display relatively high and low affinities to sigma(1) and sigma(2) receptors, respectively. The sigma(1) affinities and subtype selectivities of four piperidine derivatives were also found to be generally comparable to those of piperazine analogues. Compared to sigma(1)-Rs compounds with n = 0 and 2, those with n = 1 proved to have optimal length of carbon chain by exhibiting higher affinities.Within this series, the 4-benzyl-1-(3-iodobenzylsulfonyl)piperidine sigma ligand was identified with 96-fold sigma(1)/sigma(2) selectivity ratio (K-i sigma(i) = 0.96 +/- 0.05 nM and K-i sigma(2) = 91.8 +/- 8.1 nM). (C) 2013 Elsevier Masson SAS. All rights reserved.
Discovery of a New Class of Potent MMP Inhibitors by Structure-Based Optimization of the Arylsulfonamide Scaffold
摘要:
A new class of potent matrix metalloproteinase (MMP) inhibitors designed by structure-based optimization of the well-known arylsulfonamide scaffold is presented. Molecules show an ethylene linker connecting the sulfonamide group with P1' aromatic portion and a D-proline residue bearing the zinc-binding group. The affinity improvement providing by these modifications led us to discover a nanomolar MMP inhibitor bearing a carboxylate moiety as zinc-binding group, which might be a promising lead molecule. Notably, a significant selectivity for MMP-8, MMP-12, and MMP-13 was observed with respect to MMP-1 and MMP-7.
A series of 11 new analogues of N-acylhomoserine lactones in which the carboxamide bond was replaced by a sulfonamide one, has been synthesised. These compounds were evaluated for their ability to competitively inhibit the action of 3-oxohexanoyl-L-homoserine lactone, the natural ligand of the quorum sensing transcriptional regulator LuxR, which in turn activates expression of bioluminescence in the model bacterium Vibrio fischeri. Several compounds were found to display antagonist activity. Molecular modeling suggests that the latter prevent a cascade of structural rearrangements necessary for the formation of the active LuxR dimer. (C) 2004 Elsevier Ltd. All rights reserved.
The Peroxide Effect in the Addition of Reagents to Unsaturated Compounds. XXIII. The Reaction of Styrene with Bisulfite
作者:M. S. Kharasch、Remsen Ten Eyck. Schenck、F. R. Mayo
DOI:10.1021/ja01266a034
日期:1939.11
Labbe, H., Bulletin de la Societe Chimique de France, 1899, vol. 21, p. 1077 - 1080
作者:Labbe, H.
DOI:——
日期:——
Miller, W. v., Liebigs Annalen der Chemie, 1977, vol. 189, p. 338 - 357