(4S)-5'-Chloro-3,7,7-trimethyl-5,6,7,8-tetra-hydro-4H-spiro-[1,2-oxazolo[5,4-b]quinoline-4,3'-indole]-2',5-dione.
In the title compound, C20H18ClN3O3, the five- and six-membered heterocycles fused through a spiro C atom are inclined to each other at an angle of 87.4 (1)°. In the tricyclic ring system, the cyclo-hexene ring adopts an envelope conformation with the spiro atom as the flap. In the crystal, two sets of N-H⋯O hydrogen bonds link the mol-ecules into columns containing centrosymmetric R 2 (2)(7) ring motifs and propagating along the b-axis direction.
Department of Physics, Presidency College (Autonomous), Chennai 600 005, India.
E
E
Govindan
Industrial Chemistry Laboratory, Central Leather Research Institute, Adyar, Chennai 600 020, India.
Panneerselvam
P
Yuvaraj
Industrial Chemistry Laboratory, Central Leather Research Institute, Adyar, Chennai 600 020, India.
Boreddy Siva Rami
BS
Reddy
D. G. Vaishnav College (Autonomous), Arumbakkam, Chennai 600 106, India.
K
K
Premalatha
Department of Physics, Presidency College (Autonomous), Chennai 600 005, India.
A
A
Subbiahpandi