title: 6'-Amino-3'-methyl-2-oxo-1'-phenyl-1',3a',4',7a'-tetra-hydrospiro-[1H-indole-3(2H),4'-pyrano[2,3-d]pyrazole]-5'-carbonitrile.
abstract: In the crystal structure of the title compound, C(21)H(15)N(5)O(2), the planar indolone unit and the pyran ring are almost perpendicular to each other [dihedral angle = 89.41 (2)°], and the pyrazole and phenyl rings are oriented at an angle of 25.74 (1)°. The mol-ecular packing is stabilized by inter- and intra-molecular C-H⋯O, N-H⋯O and C-H⋯π hydrogen bonds.
authors.forename: S
authors.initials: S
authors.lastname: Etti
authors.forename: G
authors.initials: G
authors.lastname: Shanthi
authors.forename: G
authors.initials: G
authors.lastname: Shanmugam
authors.forename: P T
authors.initials: PT
authors.lastname: Perumal