X-Ray crystallographic determination of a derivative of a new flavin compound, roseoflavin

Theoretical study of the electronic spectra of oxidized and reduced states of lumiflavin and its derivative

“…For example, roseoflavin, an antibacterial red pigment, has been found in streptomyces and its structure has been assigned to be 8-dimethylamino-D-riboflavin. [30][31][32][33][34] In Scheme 2, the molecular structures of ordinary and roseoflavin are shown. The difference between the two compounds is that the methyl group at the 8 position of ordinary flavin is replaced by a dimethylamino (N(CH 3 ) 2 À À) group in roseoflavin.…”

Reactivity studies of roseoflavin analogues: a correlation between reactivity and absorption maxima

“…ET showed a linear relationship ( r = 0.97) as expressed by equation ( 2). This indicates that the photooxidising ability of (2) and (3) is directly related to their transition energies, Generally flavin-dependent reactions are accelerated in polar media, because they have polar transition states. The contrasting results obtained for the roseoflavin analogues imply that their oxidising ability is governed by the extent of the intramolecular charge transfer.…”

“…In polar solvents such as water and methanol (2) and (3) give a red colour. This colour, due to the first absorption band at ca.…”

Co-crystallization of organic chromophore roseolumiflavin and effect on its optical characteristics

“…A Cambridge Structural Database survey 27 only indicated a scant amount of available structural investigations of flavins. However, the crystal structures of several simple flavin derivatives [28][29][30] have been reported along with some solvates 31 and salts. [32][33][34] Also several co-crystals, [35][36][37][38] referred to as molecular complexes, were structurally characterised, with all of them exhibiting strong hydrogen-bonded interaction patterns.…”