349672-13-5

Upstream product

• 157396-53-7 1-(4-bromobutan-1-yl)-3,4-dihydroquinolin-2(1H)-one 
• 119532-26-2 1-(2,3-dichlorophenyl)-piperazine hydrochloride 
• 387399-03-3 N-(4-chlorobutyl)-3,4-dihydroquinolin-2(1H)-one 

Relevant academic research and scientific papers

Synthesis, 3D-QSAR, and structural modeling of benzolactam derivatives with binding affinity for the D2and D3 receptors

A series of 37 benzolactam derivatives were synthesized, and their respective affinities for the dopamine D2 and D3 receptors evaluated. The relationships between structures and binding affinities were investigated using both ligand-based (3D-QSAR) and receptor-based methods. The results revealed the importance of diverse structural features in explaining the differences in the observed affinities, such as the location of the benzolactam carbonyl oxygen, or the overall length of the compounds. The optimal values for such ligand properties are slightly different for the D2 and D 3 receptors, even though the binding sites present a very high degree of homology. We explain these differences by the presence of a hydrogen bond network in the D2 receptor which is absent in the D3 receptor and limits the dimensions of the binding pocket, causing residues in helix 7 to become less accessible. The implications of these results for the design of more potent and selective benzolactam derivatives are presented and discussed.

4-Phenyl-1-piperazinyl, -piperidinyl and -tetrahydropyridyl derivatives

The present invention relates to substituted 4-phenyl-1-piperazinyl derivatives having the formula I wherein W is C, CH or N, and the dotted line emanating from W indicates a bond when W is C and no bond when W is N or CH; R1 and R2 are independently selected from hydrogen and halogen, provided at least one of R1 and R2 is a halogen atom; R3 is selected from hydrogen, halogen, C1-6 alkyl, trifluoromethyl, C1-6 alkoxy, aryloxy, aralkoxy, hydroxy, amino, C1-6 alkylamino, di(C1-6 alkyl)amino, nitro and cyano n is 2, 3, 4 or 5; X is CH2, O, S, CO, CS, SO or SO2; and Q is a group of formula wherein Z is a chain of 3 to 4 chain members; wherein the chain members are selected from C, CH, CH2, CO, N and NH, provided that only one of the chain members may be N or NH, and said chain optionally containing one or two double bonds; hvad med acyl?? R4, R5, R6, R7, R8, R9 and R10 are independently selected from hydrogen, halogen, C1-6 alkyl, trifluoromethyl, C1-6 alkoxy, hydroxy, amino, C1-6 alkylamino, di(C1-6 alkyl)amino nitro and cyano; provided that X is not O or S when the group Q is attached via an N atom; and any of its enantiomers and acid addition salts thereof. These compounds have high affinity for D4 receptors.