A concise synthesis of the sexpheromones of elm spanworm as well as painted apple moth has been achieved. The key steps were the alkylation of acetylide ion, Sharpless asymmetric epoxidation and Brown’s P2-Ni reduction. This approach provided the sexpheromone of the elm spanworm (1) in 31% total yield and those of the painted apple moth (2, 3) in 26% and 32% total yields. The ee values of three final
A facile synthetic method for chiral 1,2-epoxides and the total synthesis of chiral pheromone epoxides
作者:Zhi-Bo Zhang、Zhi-Min Wang、Yu-Xiu Wang、Huan-Quan Liu、Gui-Xin Lei、Min Shi
DOI:10.1016/s0957-4166(99)00082-8
日期:1999.3
Chiral 1,2-epoxy-3-alkanol tosylates were successfully synthesized from alkynols in three steps using the Sharpless AD reaction as a key step in good yields. Two chiral insect pheromone epoxides were smoothly obtained from the corresponding key intermediate. (C) 1999 Elsevier Science Ltd. All rig;hts reserved.