the heteroaryl ring and oxidative fragmentation of the piperazine side chain. This unusual reaction contrasts with the fluorine atom substitution observed in neat water. The results of steady-state and time-resolved experiments are consistent with initiation of the process by electron-transfer quenching of the triplet state of these heterocycles by the phosphate anion. For one of the compounds, a transient
Photochemistry of the Phototoxic Drug Lomefloxacin: Paths Observed in the Presence of Amines or NaOH and from the Methyl Ester
作者:Elisa Fasani、Mariella Mella、Angelo Albini
DOI:10.1002/ejoc.200400466
日期:2004.12
The photochemistry of the fluoroquinolone drug lomefloxacin has been examined in aqueous solution in the presence of aliphatic amines (0.01 and 0.2 M) as well as 0.01 M NaOH; a fairly efficient decomposition (Φ = 0.2 to 0.4) takes place. Under the above conditions the product distribution is the same and differs from that previously observed in neutral and acidic aqueous solution. Five products have