Discovery, synthesis and SAR analysis of novel selective small molecule S1P4-R agonists based on a (2Z,5Z)-5-((pyrrol-3-yl)methylene)-3-alkyl-2-(alkylimino)thiazolidin-4-one chemotype
摘要:
High affinity and selective S1P(4) receptor (S1P(4)-R) small molecule agonists may be important proof-of-principle tools used to clarify the receptor biological function and effects to assess the therapeutic potential of the S1P4-R in diverse disease areas including treatment of viral infections and thrombocytopenia. A high-throughput screening campaign of the Molecular Libraries-Small Molecule Repository was carried out by our laboratories and identified (2Z,5Z)-5-((1-(2-fluorophenyl)-2,5-dimethyl-1H-pyrrol-3-yl)methylene)-3-methyl-2-(methylimino) thiazolidin-4-one as a promising S1P(4)-R agonist hit distinct from literature S1P(4)-R modulators. Rational chemical modifications of the hit allowed the identification of a promising lead molecule with low nanomolar S1P(4)-R agonist activity and exquisite selectivity over the other S1P(1-3,5)-Rs family members. The lead molecule herein disclosed constitutes a valuable pharmacological tool to explore the effects of the S1P(4)-R signaling cascade and elucidate the molecular basis of the receptor function. (C) 2011 Elsevier Ltd. All rights reserved.
Crystal structure analysis of the title compound, C13H12ClNO, reveals three crystallographically independent molecules in the asymmetric unit. The main conformational difference between these molecules is the orientation of the phenyl rings with respect to the pyrrole rings. The coplanar arrangement of the aldehyde groups attached to the pyrrole rings influences the pyrrole-ring geometry. The C2-C3 and N1-C5 bonds are noticeably longer than the C4-C5 and N1-C2 bonds. Two independent molecules of the title compound form dimers via intermolecular C-H...O hydrogen bonds [D...A = 3.400 (3) Angstrom and D-H...A = 157degrees]. The perpendicular orientation of the phenyl and pyrrole rings of one independent molecule and its symmetry-related molecule allows C-H...pi interactions, with an H...centroid distance of 2.85 Angstrom and a C-H...pi angle of 155degrees. The distances between the H atom and the pyrrole-ring atoms indicate that the C-H bond points towards one of the bonds in the pyrrole ring.
VORKAPIC-FURAC, JASNA;MINTAS, MLADEN;BURGEMIESTER, THOMAS;MANNSCHRECK, AL+, J. CHEM. SOC. PERKIN TRANS. PT 2,(1989) N, C. 713-717
Discovery, synthesis and SAR analysis of novel selective small molecule S1P4-R agonists based on a (2Z,5Z)-5-((pyrrol-3-yl)methylene)-3-alkyl-2-(alkylimino)thiazolidin-4-one chemotype
High affinity and selective S1P(4) receptor (S1P(4)-R) small molecule agonists may be important proof-of-principle tools used to clarify the receptor biological function and effects to assess the therapeutic potential of the S1P4-R in diverse disease areas including treatment of viral infections and thrombocytopenia. A high-throughput screening campaign of the Molecular Libraries-Small Molecule Repository was carried out by our laboratories and identified (2Z,5Z)-5-((1-(2-fluorophenyl)-2,5-dimethyl-1H-pyrrol-3-yl)methylene)-3-methyl-2-(methylimino) thiazolidin-4-one as a promising S1P(4)-R agonist hit distinct from literature S1P(4)-R modulators. Rational chemical modifications of the hit allowed the identification of a promising lead molecule with low nanomolar S1P(4)-R agonist activity and exquisite selectivity over the other S1P(1-3,5)-Rs family members. The lead molecule herein disclosed constitutes a valuable pharmacological tool to explore the effects of the S1P(4)-R signaling cascade and elucidate the molecular basis of the receptor function. (C) 2011 Elsevier Ltd. All rights reserved.
Pyrrole-thiazolidinone hybrids as a new structural class of broad-spectrum anti-infectives
pyrrole-thiazolidinone hybrids was designed, synthesized and evaluated for activities against ESKAP bacteria panel and mycobacterial pathogens. From the series, compound 9d showed prominent activity againstS. aureus (MIC = 0.5 μg/mL) and compound 9k showed the most promising activity againstM. tuberculosis H37Rv (MIC = 0.5 μg/mL). Potent derivatives were found to be non-toxic when tested against Vero cells.
设计、合成了一系列吡咯-噻唑烷酮杂化物,并评估其针对 ESKAP 细菌组和分枝杆菌病原体的活性。在该系列中,化合物9d显示出显着的抗金黄色葡萄球菌活性。金黄色葡萄球菌(MIC = 0.5 μg/mL) 和化合物9k显示出最有希望的抗金黄色葡萄球菌活性。结核病H37Rv(MIC = 0.5 μg/mL)。当针对 Vero 细胞进行测试时,发现有效的衍生物是无毒的。化合物9d在针对几种MRSA和VRSA菌株的体外评估中产生了与标准药物相当或更好的活性。在抗生物膜测定中, 9d减少了S。在 10 倍 MIC 时,金黄色葡萄球菌生物膜增加 >11%。吡咯-噻唑烷酮杂化物表现出的双重抑制作用证实了它们作为新型有前途的抗感染剂的潜力。