FIG 3.

(Left) ORTEP diagram of ELQ-337. Ellipsoids are drawn at the 30% probability level. (Right) A fragment of the single-crystal lattice structure of ELQ-337. It is noteworthy that the X-ray diffraction analysis of ELQ-337 crystals showed that (i) the promoiety is located at position 4 of the quinoline ring, (ii) the innermost phenyl ring attached to position 3 is rotated nearly perpendicular to the planar quinoline ring, and (iii) there is a lack of intermolecular H bonding between adjacent ELQ-337 molecules in the crystal lattice.