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Ethyl 2-amino-4-(4-methyl-1,3-thia-zol-5-yl)-5-oxo-4H,5H-pyrano[3,2-c]chromene-3-carboxyl-ate.

ABSTRACT: There are two independent mol-ecules in the asymmetric unit of the title compound, C19H16N2O5S, in which the thia-zole rings make dihedral angles of 80.89?(11) and 84.81?(11)° with the pyrano[3,2-c]chromene ring systems. An intra-molecular N-H?O hydrogen bond involving the amino group occurs in each independent mol-ecule. In the crystal, the amino groups are involved in N-H?O and N-H?N hydrogen bonds.

SUBMITTER: Karthikeyan V

PROVIDER: S-EPMC3884413 | biostudies-literature | 2013

REPOSITORIES: biostudies-literature

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Ethyl 2-amino-4-(4-methyl-1,3-thia-zol-5-yl)-5-oxo-4H,5H-pyrano[3,2-c]chromene-3-carboxyl-ate.

Karthikeyan V V Ramkumar V V Karunakaran R Joel RJ

Acta crystallographica. Section E, Structure reports online 20130810 Pt 9

There are two independent mol-ecules in the asymmetric unit of the title compound, C19H16N2O5S, in which the thia-zole rings make dihedral angles of 80.89 (11) and 84.81 (11)° with the pyrano[3,2-c]chromene ring systems. An intra-molecular N-H⋯O hydrogen bond involving the amino group occurs in each independent mol-ecule. In the crystal, the amino groups are involved in N-H⋯O and N-H⋯N hydrogen bonds. ...[more]

PMID: 24427048

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