New derivatives of 7-amino-2,3-polymethylenindole with anti-inflammatory activity

Thirty-four new N-acylderivatives of 7-amino-2,3-polymethyleneinoles (I) and (II) were prepared and tested, together with a few analogues previously obtained, against carrageenan edema in the rat. Several compounds, at a dose of 1 mmole/kg, exhibit good inhibitory activity, that in some cases is superior to that displayed by indomethacin at a dose of 5 mg/kg. With only one exception, activity is confined to compounds of formula (I) and, generally, derivatives of 2,3-hexamethyleneindole are more active than those of lower homologues.