2-O-[4-[(1R,6S)-6-prop-2-enoxycarbonylcyclohex-3-ene-1-carbonyl]oxybut-2-ynyl] 1-O-prop-2-enyl (1R,2S)-cyclohex-4-ene-1,2-dicarboxylate 在
Grubbs catalyst first generation cesium chloride 作用下,
以
二氯甲烷 为溶剂,
反应 24.0h,
以70%的产率得到(1R,5E,10S,15R,24S)-3,8,17,22-tetraoxatricyclo[22.4.0.010,15]octacosa-5,12,26-trien-19-yne-2,9,16,23-tetrone