Citrusinine-I (1), a naturally occurring acridone alkaloid with potent anitiviral activity, was synthesized for the first time, via a route involving Ulmann reaction, cyclization, and selective demethylation at the 1-position with boron trifluoride etherate and lithium bromide. 1, 5, 6-Trihydroxy-3-methoxy-9(10H)-acridone (2a) and 1, 5, 6-trihydroxy-3-methoxy-10-methyl-9(10H)-acridone (2b) were also synthesized.
通过乌尔曼反应、环化以及用
三氟化硼醚化物和
溴化锂在 1 位进行选择性去甲基化的方法,首次合成了具有强效抗病毒活性的天然
吖啶酮生物碱 Citrusinine-I(1)。此外,还合成了 1, 5, 6-三羟基-3-甲氧基-9(10H)-
吖啶酮 (2a) 和 1, 5, 6-三羟基-3-甲氧基-10-甲基-9(10H)-
吖啶酮 (2b)。