Abstract 10??Substituted isoalloxazines were synthesized in two steps starting from 1, 2?? phenylenediamine. Monoalkylation of the diamine resulted in 2??amino??N??alkylanilines, which were subsequently condensed with alloxan in boric acid and acetic acid to give 10?? substituted isoalloxazines.
![10-hexylbenzo[g]pteridine-2,4-dione Structure](https://image.chemsrc.com/caspic/242/125219-55-8.png)
