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In the mol­ecule of the title compound, C 16 H 13 N 3 O 4 , the atoms of the spiro pyran ring are nearly planar with a maximum deviation of 0.095 (2) Å. The indole and pyran rings are oriented at a dihedral angle of 87.3 (9)°. In the crystal, mol­ecules are linked by inter­molecular N—H⋯N and N—H⋯O hydrogen bonds.

Methyl 6′-amino-5′-cyano-2′-methyl-2-oxospiro[indoline-3,4′-pyran]-3′-carboxylate