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ABSTRACT:
SUBMITTER: Tantishaiyakul V
PROVIDER: S-EPMC3589072 | biostudies-literature | 2012 Dec
REPOSITORIES: biostudies-literature
Tantishaiyakul Vimon V Suknuntha Krit K Saithong Saowanit S Pakawatchai Chaveng C
Acta crystallographica. Section E, Structure reports online 20121130 Pt 12
In the title compound, C20H20O4 {systematic name: 4-[(3R)-8,8-dimethyl-3,4-dihydro-2H-pyrano[2,3-f]chromen-3-yl]benz-ene-1,3-diol}, the hydro-pyran ring linked to the pendant benzene ring adopts an envelope conformation, with the methyne C atom forming the flap. In the crystal, the -OH group at the 3-position of the benzene ring forms an O-H⋯O hydrogen bond to a chromene O-atom acceptor, whereas the -OH group at the 1-position forms an O-H⋯π inter-action with a neighboring benzene ring. The O-H⋯ ...[more]