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Ethyl 2-hydr-oxy-5-oxo-4-phenyl-2,3,4,5-tetra-hydro-pyrano[3,2-c]chromene-2-carboxyl-ate.

ABSTRACT: The main structural unit of the title compoud, C(21)H(18)O(6), is a fused three-ring group consisting of coumarin and tetra-hydro-pyrane ring systems. Two C atoms of the tetra-hydro-pyran ring are displaced by 0.295?(3) and -0.360?(2)?Å from the mean plane of coumarin ring. The dihedral angle between the phenyl and coumarin rings is 73.94?(3)°. Inter-molecular O-H?O hydrogen bonds are present in the crystal structure.

SUBMITTER: Zhang W

PROVIDER: S-EPMC2977402 | biostudies-literature | 2009 Jul

REPOSITORIES: biostudies-literature

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Ethyl 2-hydr-oxy-5-oxo-4-phenyl-2,3,4,5-tetra-hydro-pyrano[3,2-c]chromene-2-carboxyl-ate.

Zhang Wei W Zhang Guangcun G Li Bailin B Wang Yifeng Y

Acta crystallographica. Section E, Structure reports online 20090725 Pt 8

The main structural unit of the title compoud, C(21)H(18)O(6), is a fused three-ring group consisting of coumarin and tetra-hydro-pyrane ring systems. Two C atoms of the tetra-hydro-pyran ring are displaced by 0.295 (3) and -0.360 (2) Å from the mean plane of coumarin ring. The dihedral angle between the phenyl and coumarin rings is 73.94 (3)°. Inter-molecular O-H⋯O hydrogen bonds are present in the crystal structure. ...[more]

PMID: 21583645

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