- Halogen bonding enhances activity in a series of dual 5-HT6/D2 ligands designed in a hybrid bioisostere generation/virtual screening protocol
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A novel hybrid bioisostere generation/virtual screening method combined with narrowing of chemical space through similarity to compounds that are active at the second target was successfully applied for the development of structurally new dual 5-HT6/D2 receptor ligands. Consequently, a series of derivatives of the found hit 1d (N-[2-(dimethylamino)ethyl]-N-(2-phenylethyl)aniline) was synthesized. The most active 5-HT6/D2 ligands also showed affinity for 5-HT7R and 5-HT2AR. The para-chloroaniline derivative was identified as a potent dual 5-HT6/5-HT7 receptor antagonist (Ki = 24 nM and Kb = 30 nM, Ki = 4 nM and Kb = 1.4 nM, respectively). In the case of halogen-containing compounds, interesting structure-activity relationships were observed at 5-HT6, D2 and 5-HT7 receptors, and the ligand-receptor complexes were subsequently examined using a molecular modelling approach that combined quantum-polarized ligand docking (QPLD) and Molecular-Mechanics-Generalized-Born/Surface Area (MM/GBSA) free-energy calculation, which permitted the identification of putative halogen binding pockets.
- Staroń, Jakub,Warszycki, Dawid,Kurczab, Rafa?,Sata?a, Grzegorz,Bugno, Ryszard,Hogendorf, Adam,Bojarski, Andrzej J.
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p. 54918 - 54925
(2016/07/06)
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- Microwave-promoted mono-N-alkylation of aromatic amines in water: A new efficient and green method for an old and problematic reaction
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A greener improvement to direct mono-N-alkylation of aromatic amines by alkyl halides was achieved using microwave irradiation in water without any catalyst.
- Marzaro, Giovanni,Guiotto, Adriano,Chilin, Adriana
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supporting information; experimental part
p. 774 - 776
(2010/04/23)
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- LITHIATION ROUTES TO OXINDOLES AND 2-INDOLINETHIONES: PRECURSORS TO 2,2'-DITHIOBISINDOLES WITH TYROSINE KINASE INHIBITORY PROPERTIES
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N-Substituted oxindoles and 2-indolinethiones can be prepared by lithiation of carboxyl protected N,2-dimethylanilines followed by quenching with CO2 or CS2 respectively. 2-Indolinethione derivatives are also available via demethylation of 2-methylthioindoles, which are prepared by lithiation of N-substituted indoles and treatment with dimethyl disulfide.
- Rewcastle, Gordon W.,Denny, William A.
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p. 701 - 708
(2007/10/02)
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- N-N-disubstituted alkenamides and phenylalkenamides
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Compounds of the formula STR1 where n is 0 or 1, R is alkyl, phenyl or R4 -substituted phenyl, R2 and R3 are, independently, alkyl or R2 and R3 together with N is STR2 m is 1, 2 or 3, R1 and R4 are, independently hydrogen, halo, alkyl or alkoxy, and R5 is hydrogen or alkyl of 1 to 6 carbon atoms or their pharmaceutically acceptable salts are useful as anti-diabetic agents, in particular, as hypoglycemic agents or inhibitors of post-prandial hypoglycemia.
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