Syntheses and binding affinities of 6-nitroquipazine analogues for serotonin transporter. Part 4: 3-Alkyl-4-halo-6-nitroquipazines
摘要:
On the basis of the structure activity relationship (SAR) of 4-chloro-6-nitroquipazine (K-i = 0.03 nM) and 3-fluoropropyl-6-nitroquipazine (K-i = 0.32 nM), 3-alkyl-4-halo-6-nitroquipazines were synthesized and tested for their potential abilities in vitro to displace [H-3]citalopram binding to the rat cortical membranes. Binding affinities of 3h and 4d were K-i = 2.70 +/- 0.32 and 2.23 +/- 0.46 nM. respectively. The syntheses of 3-alkyl-4-halo-6-nitroquipazine. their in vitro binding affinitics. and the SAR of C3, C4 position in 6-nitroquipazine are described. (c) 2005 Elsevier Ltd. All rights reserved.
Syntheses and binding affinities of 6-nitroquipazine analogues for serotonin transporter. Part 4: 3-Alkyl-4-halo-6-nitroquipazines
摘要:
On the basis of the structure activity relationship (SAR) of 4-chloro-6-nitroquipazine (K-i = 0.03 nM) and 3-fluoropropyl-6-nitroquipazine (K-i = 0.32 nM), 3-alkyl-4-halo-6-nitroquipazines were synthesized and tested for their potential abilities in vitro to displace [H-3]citalopram binding to the rat cortical membranes. Binding affinities of 3h and 4d were K-i = 2.70 +/- 0.32 and 2.23 +/- 0.46 nM. respectively. The syntheses of 3-alkyl-4-halo-6-nitroquipazine. their in vitro binding affinitics. and the SAR of C3, C4 position in 6-nitroquipazine are described. (c) 2005 Elsevier Ltd. All rights reserved.
Malonic Ester Amide Synthesis: An Efficient Methodology for Synthesis of Amides
作者:Pankaj S. Mahajan、Jyoti P. Mahajan、Santosh B. Mhaske
DOI:10.1080/00397911.2012.717671
日期:2013.9.17
“malonic ester amide synthesis” has been demonstrated, which uses α-substituted/unsubstituted diethyl malonates for the decarboxylative acylation of various aromatic/heteroaromatic primary/secondary amines to form one-carbon homologated amides, thus providing easy access to amides with odd/even chain lengths and an array of substituents on the alkyl/aryl part while avoiding use of acyl chlorides or peptide
A novel and efficient synthesis of pyrrolidin-2-ones through the tandem reactions of vinyl sulfoniumsalts with malonyl amides under very mild conditions is reported. The reaction demonstrates a wide tolerance toward various aryls, acyl, sulfonyl, and benzyl while aliphatic groups delivering the tetrahydro-2-oxofuran product.
A novel, simple, and flexible approach to α,α-disubstituted γ-lactams via a domino Michael addition/cyclization process involving the phenyl vinyl selenone and β-ketoamides, malonylamides, or β-cyanoamides is reported. The reactions proceed in good to excellent yields under mild reaction conditions.