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Synthesis and 5-hydroxytryptamine (5-HT) activity of 2,3,4,4a-tetrahydro-1H-pyrazino[1,2-a]quinoxalin-5-(6H)ones and
G S Welmaker1, J A Nelson, J E Sabalski
1Medicinal Chemistry, Chemical Sciences, Wyeth-Ayerst Research, Princeton, NJ 08543, USA. welmakg@war.wyeth.com
Bioorganic & Medicinal Chemistry Letters
|September 15, 2000
Abstract:
A series of 2,3,4,4a-tetrahydro-1H-pyrazino[1,2-a]quinoxalin-5-(6H)ones and 2,3,4,4a,5,6-hexahydro-1H-pyrazino[1,2-a]quinoxalines was shown to exhibit 5-HT2C agonist binding and functional activity. Compound 21R inhibited food intake over 2 h in fasted, male Sprague Dawley rats with ED50 values of 2 mg/kg (i.p.) and 10 mg/kg (p.o.).