has been developed to construct a polyketide chain by employing relay asymmetric hydrogenations catalyzed by two chiral spiro iridium catalysts. By using this strategy, an enantioselective total synthesis of (−)‐doliculide has been achieved in 19 steps with 6.9 % overall yield. The route features high enantioselectivity and diastereoselectivity. The catalyst loading can be as low as 0.005 mol‐%. It
通过使用由两个手性螺
铱催化剂催化的不对称加氢反应,已开发出一种简洁高效的策略来构建聚酮链。通过使用该策略,已完成了19个步骤的对映选择性全合成(-)-doliculide,总产率为6.9%。该路线具有高对映选择性和非对映选择性。催化剂负载量可低至0.005 mol%。通过这种策略方便地获得天然聚酮化合物及其类似物。