Received 25 November 2012
aChemistry Research Centre (affiliated to Kuvempu University), SSMRV Degree College, 4th T Block, Jayanagar, Bangalore 560 041, India,bDepartment of Chemistry, KMC International Center, Manipal University, Manipal 576 104, India,cDepartment of Pharmaceutical Chemistry, Manipal College of Pharmaceutical Sciences, Manipal University, Manipal 576 104, India,dDepartment of Chemistry, Jnana Sahyadri, Kuvempu University, Shankargatta 577 451, India, and eDepartment of Physics, Bhavan's Sheth R. A. College of Science, Khanpur, Ahmedabad, Gujarat 380 001, India
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In the title compound, C18H18O4, the six-membered chroman-4-one ring adopts an envelope conformation with the C atom bonded to the bridging CH2 atom as the flap. The dihedral angle between the mean plane of the fused pyranone ring and the dimethoxy-substituted benzene ring is 89.72 (2)°. In the crystal, adjacent molecules are linked via C-H interactions.
For the biological activity and pharmaceutical properties of chromenes(benzopyrans) and a similar structure, see: Jasinski et al. (2010). For bond-length data see: Allen et al. (1987). For ring conformations, see: Cremer & Pople (1975)
Data collection: APEX2 (Bruker, 2004); cell refinement: APEX2 and SAINT (Bruker, 2004); data reduction: SAINT and XPREP (Bruker, 2004); program(s) used to solve structure: SIR92 (Altomare et al., 1994); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: ORTEP-3 (Farrugia, 2012) and CAMERON (Watkin et al., 1993); software used to prepare material for publication: PARST (Nardelli, 1995) and WinGX (Farrugia, 2012).
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: HG5275 ).
The authors thank Dr Babu Varghese, Scientific Officer, Sophisticated Analytical Instrument Facility (SAIF), Indian Institute of Technology (IIT), Chennai, India, for the data collection. SS and CRG also thank the Rashtriya Sikshana Samithi Trust (RSST) and the Principal, Sri Shivananda Memorial Rashtriya Vidyalaya (SSMRV) Degree College, Bangalore, for their constant support and encouragement in carrying out this work.
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