- N-(2-benzoylphenyl)-L-tyrosine PPARγ agonists. 2. Structure-activity relationship and optimization of the phenyl alkyl ether moiety
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We previously reported the identification of (2S)-((2- benzoylphenyl)amino)-3-{4-[2-(5-methyl-2-phenyloxazol-4- yl)ethoxy]phenyl}propanoic acid (2) (PPARγ pK(i) = 8.94, PPARγ pEC50 = 9.47) as a potent and selective PPARγ agonist. We now report the expanded structure-activity relationship around the phenyl alkyl ether moiety by pursuing both a classical medicinal chemistry approach and a solid-phase chemistry approach for analogue synthesis. The solution-phase strategy focused on evaluating the effects of oxazole and phenyl ring replacements of the 2-(5-methyl-2-phenyloxazol-4-yl)ethyl side chain of 2 with several replacements providing potent and selective PPARγ agonists with improved aqueous solubility. Specifically, replacement of the phenyl ring of the phenyloxazole moiety with a 4-pyridyl group to give 2(S)-((2- benzoylphenyl)amino)-3-{4-[2-(5-methyl-2-pyridin-4-yloxazol-4- yl)ethoxy]phenyl}propionic acid (16) (PPARγ pK(i) = 8.85, PPARγ pEC50 = 8.74) or a 4-methylpiperazine to give 2(S)-((2-benzoylphenyl)amino)-3-(4- {2-[5-methyl-2-(4-methylpiperazin-1-yl)thiazol-4-yl]ethoxy}phenyl)propionic acid (24) (PPARγ pK(i) = 8.66, PPARγ pEC50 = 8.89) provided two potent and selective PPARγ agonists with increased solubility in pH 7.4 phosphate buffer and simulated gastric fluid as compared to 2. The second strategy took advantage of the speed and ease of parallel solid-phase analogue synthesis to generate a more diverse set of phenyl alkyl ethers which led to the identification of a number of novel, high-affinity PPARγ ligands (PPARγ pK(i)'s 6.98-8.03). The combined structure-activity data derived from the two strategies provide valuable insight on the requirements for PPARγ binding, functional activity, selectivity, and aqueous solubility.
- Collins, Jon L.,Blanchard, Steven G.,Boswell, G. Evan,Charifson, Paul S.,Cobb, Jeff E.,Henke, Brad R.,Hull-Ryde, Emily A.,Kazmierski, Wieslaw M.,Lake, Debra H.,Leesnitzer, Lisa M.,Lehmann, Jürgen,Lenhard, James M.,Orband-Miller, Lisa A.,Gray-Nunez, Yolanda,Parks, Derek J.,Plunkett, Kelli D.,Tong, Wei-Qin
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- Design and synthesis of 3-(2-ethyl-4-{2-[2-(4-fluorophenyl)- 5-methyloxazol-4-yl]ethoxy}phenyl)propanoic acid: A novel triple-acting PPARα, -γ, and -δ Agonist
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The design and synthesis of triple-acting PPARα, -γ, and -δ agonist 3-(2-ethyl-4-{2-[2-(4-fluorophenyl)-5-methyloxazol-4-yl]- ethoxy}phenyl)propanoic acid (1a) is described. The compound possesses a potent triple-acting PPARα, -γ, and -δ agonist profile with an EC50 of 0.029, 0.013, and 0.029 μM, respectively. The synthetic route, involving the synthesis of oxazole rings as the key step, starts from commercially available 3-oxopentanoic acid methyl ester and 3- hydroxyacetophenone to afford the target compound 1 with an overall yield of 32%.
- Zhang, Qijun,Sun, Peng,Zheng, Guojun,Wang, Yaping,Wang, Xiangjing,Wei, Hegeng,Xiang, Wensheng
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experimental part
p. 406 - 408
(2012/06/01)
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- Synthesis and evaluation of a series of benzopyran derivatives as PPAR α/γ agonists
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A series of benzopyran derivatives were synthesized and evaluated for PPAR α/γ agonist activities. Most of the compounds exhibit reasonable PPAR α and PPAR γ agonist activities. In particular, compounds 7b, 8b, 8e and 8h with remarkable PPARg EC50 values of 0.001 μM are excellent full PPAR γ agonists with the functional potency about 130, 20 times stronger than that of leading compound 5 and rosiglitazone, respectively. Compounds 7a, 7c, 7d and 8a are dual PPAR α/γ agonists, and all of them gave comparable or stronger PPAR α/γ agonist efficacy than that of the corresponding positive control.
- Yu, Juanhong,Tang, Lei,Yang, Yushe,Ji, Ruyun
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p. 2428 - 2435
(2008/12/23)
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- NOVEL COMPOUNDS AS AGONIST FOR PPAR GAMMA AND PPAR ALPHA, METHOD FOR PREPARATION OF THE SAME, AND PHARMACEUTICAL COMPOSITION CONTAINING THE SAME
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The present invention relates to novel compounds accelerating the activity of Peroxisome proliferator-activated receptor gamma (PPARγ) and alpha (PPARα), processes of preparing the same, and pharmaceutical compositions containing the same as an active agent.
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Page/Page column 99
(2010/02/11)
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- Substituted oxazoles and thiazoles derivatives as hPPARγ and hPPARα activators
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The present invention discloses compounds of formula (I), and tautomeric forms, pharmaceutically acceptable salts, or solvates thereof. Preferably, the compounds of the invention are dual activators of hPPARγ and hPPAR{acute over (α)}.
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- Azole phenoxy hydroxyureas as selective and orally active inhibitors of 5- lipoxygenase
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Azole phenoxy hydroxyureas are a new class of 5-lipoxygenase (5-LO) inhibitors. Structure-activity relationship studies have demonstrated that electronegative substituents on the 2-phenyl portion of the oxazole tail increased the ex vivo potency of these
- Malamas,Carlson,Grimes,Howell,Glaser,Gunawan,Nelson,Kanzelberger,Shah,Hartman
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p. 237 - 245
(2007/10/03)
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