label: imidazo[2,1-b][1,3]oxazines
label_lc: imidazo[2,1-b][1,3]oxazines
description: "Any imidazooxazine resulting from the fusion of the bond between positions 2 and 1 of an imidazole with the bond between positions 2 and 3 of a 1,3-oxazine, and  derivatives."