Total syntheses of (±)-phomallenic acids B and C, potent FAS II inhibitors, have been achieved by a palladium-catalyzed coupling of propargylic tosylates and terminal alkynes. Attempts to find an enantiospecific coupling using opticallyactive propargylic compounds resulted in racemization of the products.
(±)-磷烯酸 B 和 C(有效的 FAS II 抑制剂)的全合成已经通过钯催化的炔丙基甲苯磺酸盐和末端炔烃的偶联来实现。使用旋光炔丙基化合物寻找对映体特异性偶联的尝试导致产物的外消旋化。