The seven-step, one-pot regioselective synthesis of biologically important 3-aryllawsones: scope and applications
摘要:
3-Aryllawsones are well known for their wide range of applications in medicinal chemistry, but their synthesis has always remained challenging as no comprehensive protocol has been outlined to date.
achieved via a phosphine-catalyzed [3 + 2] annulation of 2-hydroxy-1,4-naphthaquinone derivatives and allenoate. Various tetrahydrocyclopenta[b]naphthalene derivatives containing contiguous quaternary carbon centers are obtained in good yields with excellent diastereoselectivities. The asymmetric version gave the chiral product in up to 57% ee under catalysis of Kwon chiral phosphine. The reaction undergoes
通过膦催化的2-羟基-1,4-萘醌衍生物和脲基甲酸酯的[3 + 2]环构反应,已实现了对生物重要的四氢环戊五烯[ b ]萘衍生物的非对映选择性。获得具有连续的季碳中心的各种四氢环戊并[ b ]萘衍生物,具有良好的收率和极好的非对映选择性。在Kwon手性膦的催化下,不对称形式使手性产物的收率高达57%ee。该反应经历的反应机理包括连续的γ加成-醛醇缩合反应。