摘要
The total synthesis of tubulysin V was accomplished in 1.0% overall yield with linear 13 steps. Our synthetic strategy featured the following two reactions. One is zinc-mediated aza-Barbier reaction of （R）-N-tert-butane- sulfinyl imine 8 with β-ester group functionalized allylic bromide 9 to afford the chiral homo-allylic amine （7）; the other is to employ the methodology of aqueous indium-mediated aza-Barbier reaction previously developed by our group, giving the chiral homo-allylic amine 13 with high efficiency.
The total synthesis of tubulysin V was accomplished in 1.0% overall yield with linear 13 steps. Our synthetic strategy featured the following two reactions. One is zinc-mediated aza-Barbier reaction of （R）-N-tert-butane- sulfinyl imine 8 with β-ester group functionalized allylic bromide 9 to afford the chiral homo-allylic amine （7）; the other is to employ the methodology of aqueous indium-mediated aza-Barbier reaction previously developed by our group, giving the chiral homo-allylic amine 13 with high efficiency.
