1,2-唑 异噁唑(isoxazole) 异噻唑(isothiazole) 吡唑(pyrazole) 13-唑 噁唑(oxazole) 噻唑(thiazole) 咪唑(inidazole)1 2 4 3 5 N O 1 2 4 3 5 N S N N H 1 2 4 3 5 异噁唑 异噻唑(isothiazole) 吡唑(pyrazole) (isoxazole) 1,2-唑 N O 1 2 4 3 5 N S 1 2 4 3 5 N N H 1 2 4 3 5 噁唑(oxazole) 噻唑(thiazole) 咪唑(inidazole) 1,3-唑