412331-95-4Relevant academic research and scientific papers
Potent direct inhibitors of factor Xa based on the tetrahydroisoquinoline scaffold
Al-Horani, Rami A.,Mehta, Akul Y.,Desai, Umesh R.
, p. 771 - 783 (2012/09/08)
Direct inhibition of coagulation factor Xa (FXa) carries significant promise for developing effective and safe anticoagulants. Although a large number of FXa inhibitors have been studied, each can be classified as either possessing a highly flexible or a rigid core scaffold. We reasoned that an intermediate level of flexibility will provide high selectivity for FXa considering that its active site is less constrained in comparison to thrombin and more constrained as compared to trypsin. We studied several core scaffolds including 1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid for direct FXa inhibition. Using a genetic algorithm-based docking and scoring approach, a promising candidate 23 was identified, synthesized, and found to inhibit FXa with a Ki of 28 μM. Optimization of derivative 23 resulted in the design of a potent dicarboxamide 47, which displayed a Ki of 135 nM. Dicarboxamide 47 displayed at least 1852-fold selectivity for FXa inhibition over other coagulation enzymes and doubled PT and aPTT of human plasma at 17.1 μM and 20.2 μM, respectively, which are comparable to those of clinically relevant agents. Dicarboxamide 47 is expected to serve as an excellent lead for further anticoagulant discovery.
Novel aminophenyl piperazine or aminophenyl piperidine derivatives inhibiting prenyl transferase proteins and method for preparing same
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Page/Page column 5, (2008/06/13)
The invention concerns compounds corresponding to general formula (I), wherein, in particular: W represents hydrogen, COR6, CSR6, SO2R6, CO(CH2)nR6, (CH2)nR7; X represents CH or N; Y represents (CH2)n, CO, CH2CO, CH═CHCO, CH2CH2CO; Z represents a heterocycle. When Z=pyridine, then Y is other than CO. R1 represents hydrogen, C1-C6 alkyl, halogen OCH3, CF3; R2 and R3, identical or different, represent hydrogen, C1-C6 alkyl; R4 represents a) hydrogen, b) C1-C6 alkyl, c) an aryl, d) a heterocycle; R5 represents hydrogen, COR7R8, SO2R7, CO(CH2)nSR7, CO(CH2)nOR7, CONR7R8, CO(CH2)mCOR7; R6 represents a) a phenyl or a naphthyl, b) a C1-C6 alkyl, a cycloalkyl, c) a heterocycle, d) NR7R8; R7 and R8, identical or different, represent a) hydrogen, C1-C15 alkyl, b) a heterocycle, c) an aryl; n represents 0 to 10; m represents 2 to 10; provided that when Z represents a quinozaline or benzimidazole group, then R5 is other than CH2Ph or methyl and n is other than zero.
