Oxoaporphine Alkaloids: Conversion of Lysicamine into Liriodendronine and its 2-O-Methyl Ether, and Antifungal Activity
作者:Varol Pabuccuoglu、Maria Danka Rozwadowska、Arnold Brossi、Alice Clark、Charles D. Hufford、Clifford George、Judith L. Flippen-Anderson
DOI:10.1002/ardp.19913240109
日期:——
was obtained by heating 11·HCl to 200°C. The quaternary salts of lysicamine, lysicamine methiodide (3) and lysicamine methosulfate (4) were comparable in anticandidal activity to liriodenine (1), but were not as active as liriodenine methiodide (13).
重氮盐 7 在甲醇硫酸水溶液中的 Pschorr 反应得到了除赖氨酸 2 之外的氧化二苯并吡咯啉 (8) 的橙色硫酸盐。其苦味酸盐的 X 射线分析完全支持该结构。用 48% HBr 对赖氨酸 (2) 进行选择性醚裂解,得到 9 的氢溴酸盐和用吡啶-水处理的游离甜菜碱 9。两种化合物均在氮上用醚重氮甲烷处理后发生甲基化,得到已知的 2-ON-二甲基liriodendronine (11)。在 189°C 下与吡啶 HBr 一起加热,并用吡啶-水处理,以深紫色甜菜碱的形式从溶血胺 (2) 中获得鹅卵石苷 (10)。将11·HCl加热至200℃得到甜菜碱12。赖氨酸季铵盐,