New Furan Side Tetracyclic Allopsoralen Derivatives: Synthesis and Photobiological Evaluation
作者:Lisa Dalla Via、Stefano Mammi、Eugenio Uriarte、Lourdes Santana、Ilaria Lampronti、Roberto Gambari、Ornella Gia
DOI:10.1021/jm058032q
日期:2006.7.1
Novel tetracyclic allopsoralen derivatives characterized by the condensation of a fourth cyclohexenylic ( 57) or benzenic (8-10) ring at the furan side and a methoxy ( 5 and 8), a hydroxy ( 6 and 9), or a dimethylaminopropoxy ( 7 and 10) side chain in the 10 position of the chromophore were prepared. Compounds 7 and 10 showed a strong photoantiproliferative activity, up to 3 orders of magnitude higher than that of the photochemotherapeutic drug 8-methoxypsoralen (8-MOP). The investigation into the mechanism of action demonstrated for 10 the capacity to intercalate between DNA base pairs in the ground state, to give rise to a covalent photoaddition upon UVA irradiation, and to inhibit polymerase chain reaction (PCR) in a sequence-specific manner. Conversely, compound 7 showed a limited capacity to form an intercalative complex and the lack of ability to photoadd to the macromolecule, thus revealing a novel and unusual behavior for an allopsoralen derivative.