Design and synthesis of novel 9-substituted-7-aryl-3,4,5,6-tetrahydro-2H-pyrido(4,3-b)- and (2,3-b)-1,5-oxazocin-6-ones as NK1 antagonists - Seto, S; Tanioka, A; Ikeda, M; Izawa, S (Bioorg Med Chem Lett, 2005)