[Local-anesthetic activity of l-aminoacetyl-2, 3-dihydroindole derivatives].

1-(N-piperidine-acetyl)-2,3-dihydroindoles display high activity in infiltration and conduction anestheia, exceeding that of trimecaine. N-alkylaminoacetyl-indolines are moderately active, while N-morpholine and N-indolylacetyl-indolines are practically inactive when employed in the given types of local anesthesia. All the N-substituted aminoacetyl-indolines are little active in terminal anesthesia.