三元环化合物 Three-Membered Rings
| Aziridines |
Cyclopropanes |
Diaziridines |
Thiiranes |
| Azirines |
Diaziridines |
Oxaziridines |
|
四元环化合物 Four-Membered Rings
| Azetidines |
Diazetidines |
Oxetanes |
Thietanes |
| Cyclobutanes |
Dioxetanes |
Oxetenes |
Thietes |
五元环化合物 Five-Membered Rings
| Cyclopentanes |
Furans |
Imidazolidines |
Isothiazolidines |
Isoxazolidines |
Oxazoles |
Pyrazoles |
| Dioxolanes |
Furazans |
Imidazolines |
Isothiazolines |
Isoxazolines |
Oxazolidines |
Pyrazolidines |
| Dioxoles |
Imidazoles |
Isothiazoles |
Isoxazoles |
Oxadiazoles |
Oxazolines |
Pyrazolines |
| Tetrahydrothiophenes |
Triazoles |
Tetrazoles |
Thiadiazoles |
Thiazoles |
Thiazolidines |
Thiazolines |
Pyrroles |
Pyrrolidines |
Pyrrolines |
Thiophenes |
六元环化合物 Six-Membered Rings
| Benzenes |
Cyclohexanes |
Dioxanes |
Morpholines |
Oxazines |
Piperazines |
| Piperidines |
Pyrans |
Pyrazines |
Pyridazines |
Pyridines |
Pyrimidines |
| Pyrones |
Quinones |
Tetrahydropyrans |
Thiadiazines |
七元环 Seven-Membered Rings
5,6-基杂环 5,6-Membered Fused Rings
| Azaindoles |
Benzimidazoles |
Benzodioxolanes |
Benzofurans |
Benzofurazans |
| Benzoisothiazoles |
Benzoisoxazoles |
Benzothiadiazoles |
Benzothiazoles |
Benzothiophenes |
| Benzotriazoles |
Benzoxadiazoles |
Benzoxazoles |
Furopyridines |
Furopyrimidines |
| Imidazopyrazines |
Imidazopyridazines |
Imidazopyridines |
Imidazopyrimidines |
Indazoles |
| Indenes |
Indoles |
Indolinediones |
Indolines |
Indolinones |
| Indolizines |
Isoindoles |
Isoindolinediones |
Isoindolines |
Isoindolinones |
| Isothiazolopyridines |
Isoxazolopyridines |
Oxazolopyridines |
Purines |
Pyranoimidazoles |
| Pyranoisoxazoles |
Pyranooxazoles |
Pyranopyrazoles |
Pyrazolopyrazines |
Pyrazolopyridazines |
| Pyrazolopyridines |
Pyrazolopyrimidines |
Pyrrolopyrazines |
Pyrrolopyridazines |
Pyrrolopyrimidines |
| Pyrrolotriazines |
Selenazolopyrindes |
Thiazolopyridines |
Thiazolopyrimidines |
Thienopyridines |
| Thienopyrimidines |
Thiopyranoimidazoles |
Triazolopyrazines |
Triazolopyridazines |
Triazolopyridines |
| Triazolopyrimidines |
6,6-基杂环 6,6-Membered Fused Rings
| Benzodioxanes |
Benzothiazines |
Benzoxazines |
Chromones |
Cinnolines |
| Coumarins |
Isochromenones |
Isoquinolines |
Naphthalenes |
Naphthyridines |
| Phthalazines |
Pteridines |
Pyridopyrazines |
Pyridopyridazines |
Pyridopyrimidines |
| Quinazolines |
Quinolines |
Quinolizines |
Quinoxalines |
Tetrahydroisoquinolines |
| Tetrahydroquinolines |
其他杂环 Other Fused Rings
| Azulenes |
Acridines |
Anthracenes |
Azaspirocyclic |
Aziridines(Polycyclic) |
| Carbazoles |
Dibenzofurans |
Fluorenes |
Imidazothiazoles |
Indenoindoles |
| Phenanthrenes |
Phenanthridines |
Phenanthrolines |
Phenothiazines |
Pyrenes |
| Pyrrolizines |
Xanthenes |
Xanthenones |
