Structure–activity relationships for lipoprotein lipase agonists that lower plasma triglycerides in vivo
摘要:
The risk of cardiovascular events increases in individuals with elevated plasma triglyceride (TG) levels, therefore advocating the need for efficient TG-lowering drugs. In the blood circulation, TG levels are regulated by lipoprotein lipase (LPL), an unstable enzyme that is only active as a non-covalently associated homodimer. We recently reported on a N-phenylphthalimide derivative (1) that stabilizes LPL in vitro, and moderately lowers triglycerides in vivo (Biochem. Biophys. Res. Common. 2014, 450, 1063). Herein, we establish structure activity relationships of 51 N-phenylphthalimide analogs of the screening hit 1. In vitro evaluation highlighted that modifications on the phthalimide moiety were not tolerated and that lipophilic substituents on the central phenyl ring were functionally essential. The substitution pattern on the central phenyl ring also proved important to stabilize LPL However, in vitro testing demonstrated rapid degradation of the phthalimide fragment in plasma which was addressed by replacing the phthalimide scaffold with other heterocyclic fragments. The in vitro potency was retained or improved and substance 80 proved stable in plasma and efficiently lowered plasma TGs in vivo. 2015 The Authors. Published by Elsevier Masson SAS.
Structure–activity relationships for lipoprotein lipase agonists that lower plasma triglycerides in vivo
摘要:
The risk of cardiovascular events increases in individuals with elevated plasma triglyceride (TG) levels, therefore advocating the need for efficient TG-lowering drugs. In the blood circulation, TG levels are regulated by lipoprotein lipase (LPL), an unstable enzyme that is only active as a non-covalently associated homodimer. We recently reported on a N-phenylphthalimide derivative (1) that stabilizes LPL in vitro, and moderately lowers triglycerides in vivo (Biochem. Biophys. Res. Common. 2014, 450, 1063). Herein, we establish structure activity relationships of 51 N-phenylphthalimide analogs of the screening hit 1. In vitro evaluation highlighted that modifications on the phthalimide moiety were not tolerated and that lipophilic substituents on the central phenyl ring were functionally essential. The substitution pattern on the central phenyl ring also proved important to stabilize LPL However, in vitro testing demonstrated rapid degradation of the phthalimide fragment in plasma which was addressed by replacing the phthalimide scaffold with other heterocyclic fragments. The in vitro potency was retained or improved and substance 80 proved stable in plasma and efficiently lowered plasma TGs in vivo. 2015 The Authors. Published by Elsevier Masson SAS.
Efficient and Convenient Synthesis of Pyrrolo[1,2-<i>a</i>]quinazoline Derivatives with the Aid of Tin(II) Chloride
作者:Manman Wang、Guolan Dou、Daqing Shi
DOI:10.1021/cc100062e
日期:2010.7.12
An efficient, convenient, one-pot synthesis of 2,3,3a,4-tetrahydropyrrolo[1,2-a]quinazolin-5(1H)-one and 2,3,3a,4-tetrahydropyrrolo[1,2-a]quinazoline-1,5-dione was accomplished in good yields via the novel reductive cyclization of 2-nitrobenzamides with haloketones or keto acids mediated by SnCl2·2H2O system. A variety of substrates can participate in the process with good yields, making this methodology
2,3,3a,4-四氢吡咯并[1,2 - a ]喹唑啉-5(1 H)-one和2,3,3a,4-四氢吡咯并[1,2-通过由SnCl 2 ·2H 2 O系统介导的2-硝基苯甲酰胺与卤代酮或酮酸的新型还原性环化反应,可以成功地制得]]喹唑啉-1,5-二酮。多种底物可以高收率参与该过程,从而使该方法适用于药物发现工作中的文库合成。
Efficient and convenient synthesis of spiroindolinone-quinazolines induced by stannous chloride
作者:Yu Hu、Man-Man Wang、Hui Chen、Da-Qing Shi
DOI:10.1016/j.tet.2011.09.130
日期:2011.12
An efficient, convenient, one-potsynthesis of 1′H-spiro[indoline-3,2′-quinazoline]-2,4′(3′H)-dione derivatives was accomplished in good yields via the novel reductive cyclization of 2-nitrobenzamides and isatins mediated by SnCl2·2H2O system. A variety of substrates can participate in the process with good yields, making this methodology have broad applicability. The structure of compound 3c has been