作者:J.Foyere Ayafor、B.Lucas Sondengam、B.Tchaleu Ngadjui
DOI:10.1016/0031-9422(82)83109-9
日期:1982.1
structures of two new 2-quinolone alkaloids from the stem bark of Vepris louisii , N -methylpreskimmianine [7,8 - dimethoxy - 3 - (3 - methylbut - 2 - enyl) - 1 - methyl - 2 - quinolone] and veprisine (7,8 - dimethoxy - N - methylflindersine) have been deduced from their spectral data and confirmed by partial synthesis from known compounds. Two minor indolopyridoquinazoline alkaloids were also isolated
摘要 两种新型2-喹诺酮类生物碱,N-methylpreskimmianine [7,8-二甲氧基-3-(3-methylbut-2-enyl)-1-methyl-2-quinolone]和veprisine的结构(7,8 - 二甲氧基 - N - 甲基弗林德辛) 已从它们的光谱数据中推导出来,并通过已知化合物的部分合成得到证实。两种次要的吲哚并吡啶并喹唑啉生物碱也被分离出来并鉴定为已知的 1-羟基芸香芸香碱和迄今为止未知的 1-羟基芸香芸香碱的 7,8-脱氢衍生物。