Optically active 5-deazaflavin derivatives with an axial chirality at
the N(3) position have been synthesized. Kinetics for thermal enantiom
erization and X-ray crystallographic analyses of these compounds have
been carried out. In addition, all absolute configurations of their en
antiomers have been determined on the basis of circular dichroism spec
tra. (C) 1997 Elsevier Science Ltd.