Caffieri S, Beijersbergen van Henegouwen G M, Erkelens C, de Bruijn C, Dall'Acqua F
Department of Pharmaceutical Sciences, University, Padova, Italy.
J Photochem Photobiol B. 1987 Dec;1(2):213-21. doi: 10.1016/1011-1344(87)80028-3.
4,6,4'-Trimethylangelicin and 6,5'-dimethylangelicin form C4-cyclodimers when irradiated in water-ethanol solution. The former compound yields a pyrone-pyrone dimer similar to that formed by psoralens. 6,5'-Dimethylangelicin forms both pyrone-pyrone and pyrone-furan dimers; this unusual dimer has the cis-syn configuration.
4,6,4'-三甲基白芷素和6,5'-二甲基白芷素在水-乙醇溶液中受辐照时会形成C4-环二聚体。前一种化合物产生一种类似于补骨脂素形成的吡喃-吡喃二聚体。6,5'-二甲基白芷素会形成吡喃-吡喃和吡喃-呋喃二聚体；这种不同寻常的二聚体具有顺式-顺式构型。
