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5-Hy-droxy-7-meth-oxy-2-methyl-4H-chromen-4-one from Dysoxylum macrocarpum (Meliaceae).

ABSTRACT: Both independent mol-ecules in the asymmetric unit of the title compound, C(11)H(10)O(4), are almost planar (r.m.s. deviations = 0.011 and 0.033?Å). In both mol-ecules, the hy-droxy group is intra-molecularly hydrogen bonded to the ketonic O atom. The independent mol-ecules are stacked alternately along the a axis, with the centroids of their chromene ring separated by distances of 4.490?(1) and 3.621?(1)?Å.

SUBMITTER: Najmuldeen IA

PROVIDER: S-EPMC3007310 | biostudies-other | 2010

REPOSITORIES: biostudies-other

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5-Hy-droxy-7-meth-oxy-2-methyl-4H-chromen-4-one from Dysoxylum macrocarpum (Meliaceae).

Najmuldeen Ibrahim A IA Abdul Hadi Abdul Hamid AH Awang Khalijah K Mohamad Khalit K Ng Seik Weng SW

Acta crystallographica. Section E, Structure reports online 20100703 Pt 8

Both independent mol-ecules in the asymmetric unit of the title compound, C(11)H(10)O(4), are almost planar (r.m.s. deviations = 0.011 and 0.033 Å). In both mol-ecules, the hy-droxy group is intra-molecularly hydrogen bonded to the ketonic O atom. The independent mol-ecules are stacked alternately along the a axis, with the centroids of their chromene ring separated by distances of 4.490 (1) and 3.621 (1) Å. ...[more]

PMID: 21588219

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