| Active principles | Rating | Bibliogr. | Expand | |
|---|---|---|---|---|
| 1 | Purines | 100 | + | |
| 2 | Indoles | 35 | + | |
| 3 | Benzopyrans | 27 | + | |
| 4 | Benzazepines | 17 | + | |
| 5 | Isoquinolines | 9 | + | |
| 6 | Quinolines | 7 | + | |
| 7 | Benzofurans | 6 | + | |
| 8 | Bicyclo Compounds, Heterocyclic | 5 | + | |
| 9 | Isoindoles | 4 | + | |
| 10 | Quinazolines | 3 | + | |
| 11 | Quinolizines | 2 | + | |
| 12 | Quinoxalines | 2 | + | |
| 13 | Indazoles | 2 | + | |
| 14 | Benzoxazoles | 1 | + |