| —— | 2-hydrazino-4-oxo-3,4,5,6-tetrahydrospiro(benzo[h]quinazoline-5,1'-cyclohexane) | 300732-21-2 | C17H20N4O | 296.372 | 
                                                                                                                                            
                                        | —— | 2-(β-hydroxyethylamino)-4-oxo-3,4,5,6-tetrahydrospiro(benzo[h]quinazoline-5,1'-cyclohexane) | —— | C19H23N3O2 | 325.411 | 
                                                                                                                                            
                                        | —— | 2-(γ-hydroxypropylamino)-4-oxo-3,4,5,6-tetrahydrospiro(benzo[h]quinazoline-5,1'-cyclohexane) | —— | C20H25N3O2 | 339.437 | 
                                                                                                                                            
                                        | —— | 5,6,9,10-tetrahydrospiro(7H-benzo[h][1,3]thiazolo[2,3-b]quinazoline-6,1'-cyclohexane)-7-one | —— | C19H20N2OS | 324.447 | 
                                                                                                                                            
                                        | —— | 6-oxo-1H-7,8-dihydrospiro(benzo[h]triazolo[3,4-b]quinazoline-7,1'-cyclohexane) | —— | C18H18N4O | 306.367 | 
                                                                                                                                            
                                        | —— | 5,6,10,11-tetrahydrospiro(7H,9H-benzo[h][1,3]thiazino[2,3-b]quinazoline-6,1'-cyclohexane)-7-one | —— | C20H22N2OS | 338.473 | 
                                                                                                                                            
                                        | —— | 6-oxo-1H-7,8-dihydrospiro(benzo[h]tetrazolo[5,4-b]quinazoline-7,1'-cyclohexane) | —— | C17H17N5O | 307.355 |