4-(5-amino-3H-1,3-benzoxazol-2-ylidene)-2,6-ditert-butylcyclohexa-2,5-dien-1-one

2,6-ditert-butyl-4-(3H-[1,3]oxazolo[4,5-b]pyridin-2-ylidene)cyclohexa-2,5-dien-1-one

2,6-ditert-butyl-4-(6-methoxy-3H-1,3-benzoxazol-2-ylidene)cyclohexa-2,5-dien-1-one

2,6-ditert-butyl-4-(1H-[1,3]oxazolo[5,4-b]pyridin-2-ylidene)cyclohexa-2,5-dien-1-one

普立非酮