2,15-Dioxa-7,18,19,20,23-penta-aza-hepta-cyclo-[21.6.1.1(17,20).0(1,8).0(3,7).0(9,14).0(24,29)]hentriaconta-9,11,13,17(31),18,24,26,28-octaen-30-one.
In the title compound, C24H23N5O3, the oxindole ring system is nearly planar, with a dihedral angle between the two fused rings of 3.3 (1)°. In the fused pyrrolo-oxazole ring system, the oxazole and pyrrolidine rings adopt envelope conformations with the spiro C atom and one of the methyl-ene C atoms, respectively, as the flap atoms. In the crystal, mol-ecules are linked into a helical chain along the b axis via C-H⋯O inter-actions generating R 2 (1)(7) and R 2 (2)(8) ring motifs.
Department of Physics, Dr. M.G.R. Educational and Research Institute University, Periyar E.V.R. High Road, Adayalampattu, Chennai 600 095, India.
Govindarajulu Rangabashyam
GR
Subhashree
Department of Organic Chemistry, University of Madras, Guindy Campus, Chennai 600 025, India.
Santhanagopalan
S
Purushothaman
Department of Organic Chemistry, University of Madras, Guindy Campus, Chennai 600 025, India.
Raghavachary
R
Raghunathan
Centre of Advanced Study in Crystallography and Biophysics, University of Madras, Guindy Campus, Chennai 600 025, India.
Devadasan
D
Velmurugan
Department of Biotechnology, Dr. M.G.R. Educational and Research Institute University, Periyar E.V.R. High Road, Maduravoyal, Chennai 600 095, India.
Dasararaju
D
Gayathri