Abstract
In the title compound, C24H26O4, the central 4H-pyran ring adopts a flattened boat conformation, with the mean and maximum deviations of the ring being 0.0582 (6) and 0.1012 (3) Å, respectively. The two cyclohexenone rings on opposite sides of the pyran ring each adopt an envelope conformation; the C atom bearing a dimethyl substituent is the flap atom in each case. The mean planes of the pyran ring and the substituent benzene ring subtend a dihedral angle of 86.45 (2)°. In the crystal, molecules are linked into inversion dimers via pairs of C—H...O hydrogen bonds.
Highlights
In the title compound, C24H26O4, the central 4H-pyran ring adopts a flattened boat conformation, with the mean and maximum deviations of the ring being 0.0582 (6) and 0.1012 (3) A, respectively
Molecules are linked into inversion dimers via pairs of C—HÁ Á ÁO hydrogen bonds
108.3 108.3 108.3 107.4 119.6 (2) 121.7 (2) 118.6 (2) 109.5 109.5 109.5 109.5 109.5 109.5 109.5 109.5 109.5 109.5 109.5 109.5 109.5 109.5 109.5 data-4
Summary
Xanthene is the parent compound of a number of naturally occurring substances and some synthetic dyes. Xanthene derivatives (Reddy et al, 2009; Mehdi et al, 2011; Rizwana Begum et al, 2014; Sughanya & Sureshbabu, 2012; Sureshbabu & Sughanya, 2013) are used as dyes (Hilderbrand & Weissleder, 2007), possess biological properties such as antibacterial, antiviral and anti-inflammatory (Dimmock et al, 1988) activities and are used in medicine. Atoms O3 and C7 are displaced out of this mean plane, which means that the ring may be described as having a highly flattened boat conformation.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
