(2R,3S,4R,6R,8E)-2-<(2S,3S,4R,5S,6S)-6-Ethyl-6-hydroxy-4-(p-methoxybenzyloxy)-3,5-dimethyl-tetrahydro-2H-pyran-2-yl>-3-hydroxy-4,6,8-trimethyl-8-undecen-5-one 在
吡啶 、 3 A molecular sieve 、
戴斯-马丁氧化剂 作用下,
以
二氯甲烷 为溶剂,
反应 2.0h,
以97%的产率得到(2S,4S,6R,8E)-2-<(2S,3S,4R,5S,6S)-6-Ethyl-6-hydroxy-4-(p-methoxybenzyloxy)-3,5-dimethyl-tetrahydro-2H-pyran-2-yl>-4,6,8-trimethyl-8-undecen-3,5-dione