Rotenoids, isoflavones and chalcones from the stem bark of Millettia usaramensis subspecies usaramensis
作者:Abiy Yenesew、Jacob O. Midiwo、Peter G. Waterman
DOI:10.1016/s0031-9422(97)00424-x
日期:1998.1
From the stem bark of Millettia usaramensis subsp. usaramensis four new 12a-hydroxyrotenoids with the unusual trans B/C ring junction ((+)-12a-epimillettosin, (+)-usararotenoid-A, (+)-12-dihydrousararotenoid-A, and (+)-usararotenoid-B), a new α-hydroxydihydrochalcone (α,4,2′-trihydroxy-4′-O-geranyldihydrochalcone), a new isoflavone, (norisojamicin), and a new cinnamyl alcohol derivative (4-O-geranylcinnamyl
来自 Millettia usaramensis subsp. 的茎皮。usaramensis 四种具有不寻常反式 B/C 环连接的新 12a-羟基胡萝卜素((+)-12a-epimillettosin、(+)-usararotenoid-A、(+)-12-dihydrousararotenoid-A 和 (+)-usararotenoid-B ),已分离出一种新的 α-羟基二氢查尔酮 (α,4,2'-trihydroxy-4'-O-geranyldihydrochalcone)、一种新的异黄酮 (norisojamicin) 和一种新的肉桂醇衍生物 (4-O-geranylcinnamyl acetate)和特点。此外,还鉴定了已知化合物 4'-O-香叶基异甘草素、异甘草素、巴比灵酮、牙买素和最大异黄酮-G。结构是在光谱证据和化学转化的基础上确定的。