3,3,6,6-Tetramethyl-10-phenyl-3,4,6,10-tetrahydro-2H,7H-acridine-1,8-dione

8'-(hydroxymethyl)-2'-methoxy-4,4-dimethyl-3',5',7',8'-tetrahydro-4'H-spiro[cyclohexane-1,6'-pyrido[2,3-d]pyrimidine]-2,4',6-trione

8'-(hydroxymethyl)-2'-methoxy-3',4,4-trimethyl-3',5',7',8'-tetrahydro-4'H-spiro[cyclohexane-1,6'-pyrido[2,3-d]pyrimidine]-2,4',6-trione

8'-(hydroxymethyl)-3',4,4-trimethyl-2'-(methylthio)-3',5',7',8'-tetrahydro-4'H-spiro[cyclohexane-1,6'-pyrido[2,3-d]pyrimidine]-2,4',6-trione

8-hydroxymethyl-4',4'-dimethyl-2-methylsulfanyl-3,4,5,6,7,8-hexahydropyrido[2,3-d]pyrimidine-6-spiro-1'-cyclohexane-2',4,6'-trione