- Discovery of (R)-9-ethyl-1,3,4,10b-tetrahydro-7-trifluoromethylpyrazino[2, 1-a]isoindol-6(2H)-one, a selective, orally active agonist of the 5-HT 2C receptor
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Robust pharmaceutical treatment of obesity has been limited by the undesirable side-effect profile of currently marketed therapies. This paper describes the synthesis and optimization of a new class of pyrazinoisoindolone- containing, selective 5-HT2C agonists as antiobesity agents. Key to optimization of the pyrazinoisoindolone core was the identification of the appropriate substitution pattern and functional groups which led to the discovery of (R)-9-ethyl-1,3,4,10b-tetrahydro-7-trifluoromethylpyrazino[2,1-a] isoindol-6(2H)-one (58), a 5-HT2C agonist with > 300-fold functional selectivity over 5-HT2B and > 70-fold functional selectivity over 5-HT2A. Oral dosing of 58 reduced food intake in an acute rat feeding model, which could be completely reversed by a selective 5-HT2C antagonist and caused a reduction in body weight gain in a 4-day rat model.
- Wacker, Dean A.,Varnes, Jeffrey G.,Malmstrom, Sarah E.,Cao, Xueying,Hung, Chen-Pin,Ung, Thao,Wu, Ginger,Zhang, Ge,Zuvich, Eva,Thomas, Michael A.,Keim, William J.,Cullen, Mary Jane,Rohrbach, Kenneth W.,Qu, Qinling,Narayanan, Rangaraj,Rossi, Karen,Janovitz, Evan,Lehman-McKeeman, Lois,Malley, Mary F.,Devenny, James,Pelleymounter, Mary Ann,Miller, Keith J.,Robl, Jeffrey A.
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p. 1365 - 1379
(2007/10/03)
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- Antiestrogenic N-(4-hydroxyphenyl)-N-(1,1,1-trifluoro-2-propyl)-4-hydroxybenzamides: Influence of hydrophobic groups substituted in the ortho-position of the benzamide-fragment on activity
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Experiments are reported here to develop compounds with antiestrogenic and mammary tumor inhibiting properties. Analogues with hydrophobic groups in 2- or 2,6-position of the benzamide-fragment of N-(4-hydroxyphenyl)-N-(1,1,1-trifluoro-2-propyl)-4-hydroxy
- Hartmann,Vom Orde,Schonenberger
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