3-甲基呋喃并[3,2-b]吡啶

tert-butyl 4-oxospiro[3H-pyrano[3,2-b]pyridine-2,4'-piperidine]-1'-carboxylate

3-甲基-呋喃并[3,2-b]吡啶-2-羧酸

2-甲基[1,3]噁唑并[4,5-b]吡啶

3-methyl-[1,2]oxazolo[4,5-b]pyridine