Abstract
The redetermined structure of title chalcone derivative, C23H16O2, corrects errors in the title, scheme and synthesis in the previous report of the same structure [Jasinski et al. (2011 ▶). Acta Cryst. E67, o795]. There are two independent molecules in the asymmetric unit with slight differences in bond lengths and angles. The dihedral angle between the benzene ring and the anthracene ring system is 73.30 (4)° in one molecule and 73.18 (4)° in the other. Both molecules feature an intramolecular O—H⋯O hydrogen bond, which generates an S(6) ring. In the crystal, molecules are arranged into sheets lying parallel to the ac plane and further stacked along the b axis by π–π interactions with centroid–centroid distances in the range 3.6421 (6)–3.7607 (6) Å. The crystal structure is further stabilized by C—H⋯π interactions. There are also C⋯O [3.2159 (15) Å] short contacts.
Highlights
Crystal Materials Research Unit, Department of Chemistry, Faculty of Science, Prince of Songkla University, Hat-Yai, Songkhla 90112, Thailand, and bX-ray
Cg1, Cg3, Cg5, Cg6 and Cg7 are the centroids of the C1A–C6A, C8A–C13A, C1B–C6B, C1B/C6B–C8B/C13B–C14B and C8B–C13B rings, respectively
In addition our experiment shows that (I) exhibits tyrosinase inhibitory activity with % inhibition of 12.882±8.511 at the concentration 0.125 mg ml-1 when
Summary
Crystal Materials Research Unit, Department of Chemistry, Faculty of Science, Prince of Songkla University, Hat-Yai, Songkhla 90112, Thailand, and bX-ray. There are two independent molecules in the asymmetric unit with slight differences in bond lengths and angles. The dihedral angle between the benzene ring and the anthracene ring system is 73.30 (4) in one molecule and 73.18 (4) in the other. Both molecules feature an intramolecular O—H O hydrogen bond, which generates an S(6) ring. Molecules are arranged into sheets lying parallel to the ac plane and further stacked along the b axis by – interactions with centroid–centroid distances in the range 3.6421 (6)–3.7607 (6) Å. There are C O [3.2159 (15) Å] short contacts
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