3,6,6-三甲基-4-氧代-4,5,6,7-四氢-1-苯并呋喃-2-羧酸

6,6-二甲基-4-氧代-4,5,6,7-四氢苯并呋喃-3-羧酸

3,3,6,6,9-pentamethyl-4,5,7,9-tetrahydro-2H-xanthene-1,8-dione

9,9-dimethyl-6-phenyl-6,8,10,11-tetrahydro-5H-benzo[b][1,4]benzodiazepin-7-one

3-anilino-5,5-dimethylcyclohex-2-en-1-one