using a chiral pool approach. Key steps in the syntheses are a one-flask, two-step protocol to generate the quinolizine core and a C−H functionalization reaction between tetrahydroquinolizinones and an aryltrifluoroborate. The natural product (R)-boehmeriasin A demonstrated potent cytotoxicity against several cancer cell lines, whereas the unnatural (+)-(S)-isomer was significantly less potent.
Boehmeriasin A 的两种对映异构体均采用手性池方法分七个步骤合成。合成的关键步骤是一个单瓶、两步的协议,用于生成喹嗪核心和四氢喹嗪酮和芳基三
氟硼酸盐之间的 C-H 功能化反应。
天然产物 ( R )-勃姆星菌素 A 显示出对几种癌
细胞系的有效细胞毒性,而非天然 (+)-( S )-异构体的效力明显较低。