作者:Takahiro Matsumoto、Kazuki Takahashi、Sumire Kanayama、Yuka Nakano、Hiromi Imai、Masumi Kibi、Daisuke Imahori、Tomohiro Hasei、Tetsushi Watanabe
DOI:10.1007/s11418-017-1108-3
日期:2017.10
The methanolic extracts from the peels of Citrus limon were found to show antimutagenic effects against 3-amino-1,4-dimethyl-5H-pyrido[4,3-b]indole, and 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP) in the Ames test. From the methanolic extracts, four new coumarins (wakayamalimonol A–D) and a new furanocoumarin (wakayamalimonol E) were isolated together with fifteen known compounds. The absolute stereostructures of the new compounds were determined by chemical synthesis and the modified Mosher’s method. Among the isolated constituents, coumarins, furanocoumarins, and limonoids showed antimutagenic effects in the Ames test. One of the major constituent, limonin, showed significant antimutagenic effects against mitomycinC and PhIP in the micronucleus test in vivo.
从柠檬(Citrus limon)果皮提取的甲醇提取物在Ames试验中显示出对3-氨基-1,4-二甲基-5H-吡啶[4,3-b]吲哚和2-氨基-1-甲基-6-苯基咪唑[4,5-b]吡啶(PhIP)的抗突变效应。通过甲醇提取物,分离出了四种新香豆素(wakayamalimonol A–D)和一种新呋喃香豆素(wakayamalimonol E),以及十五种已知化合物。新化合物的绝对立体结构通过化学合成和改进的Mosher法确定。在分离的成分中,香豆素、呋喃香豆素和柠檬素类在Ames试验中显示出抗突变效应。其中一种主要成分,柠檬素,在体内的微核实验中对美克霉素C和PhIP显示了显著的抗突变效应。