Benzoyl indolecarboxylates of the formula:
where R1 is hydrogen, halogen, lower alkyl or lower alkoxy; R2 is hydrogen, lower alkyl, acetyl or benzoyi; R3 is hydrogen or lower alkyl; and A is a direct bond, or lower alkylene or vinylene substituted at the 2-, 3- or 5-position of the indole nucleus, and their pharmaceutically acceptable acid addition salts, are provided as effective chymotrypsin inhibitors.