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Ethyl 2-amino-7,7-dimethyl-2',5-dioxo-spiro-[5,6,7,8-tetra-hydro-4H-chromene-4,3'(2'H)-1H-indole]-3-carboxyl-ate.


ABSTRACT: In the mol-ecule of the title compound, C(21)H(22)N(2)O(5), the indole system and the spiro-pyran ring are almost planar [maximum deviations of 0.0447?(17) and 0.0781?(17)?Å, respectively]; the dihedral angle between them is 84.6?(3)°. The remaining six-membered ring adopts a twisted conformation. Intra-molecular N-H?O hydrogen bonds occur. In the crystal structure, intera-molecular N-H?O and C-H?O hydrogen bonds link the mol-ecules.

SUBMITTER: Wang J 

PROVIDER: S-EPMC2979861 | BioStudies | 2010-01-01T00:00:00Z

REPOSITORIES: biostudies

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