Thapsigargin (Tg) is a potent SERCA pump inhibitor with the potential to treat cancer and COVID-19. We have extended the scope of the asymmetric allenic Pauson–Khand reaction to furan-tethered allene-ynes, a stereoconvergent transformation affording the 5,7,5-ring system of Tg in good yields and high enantioselectivity. Computational studies of the oxidative cyclization step show that the furan and
Thapsigargin (Tg) 是一种有效的
SERCA 泵
抑制剂,具有治疗癌症和 COVID-19 的潜力。我们已将不对称
丙二烯 Pauson-Khand 反应的范围扩展到
呋喃束缚
丙二烯-
炔烃,这是一种立体收敛转化,以良好的收率和高对映选择性提供了 Tg 的 5,7,5-环系统。氧化环化步骤的计算研究表明,
呋喃和
氯乙酸酯基团有助于这种高选择性。