des-3,4,5-trimethoxycinnamoylonjisaponin E pentadeca-O-methyl ether monomethyl ester 在
lithium aluminium tetrahydride 作用下,
以
四氢呋喃 为溶剂,
反应 4.0h,
以70 mg的产率得到(2S,3R,4S,5R)-2-{(2S,3R,4R,5S,6S)-5-[(2S,3R,4S,5R)-3,4-Dimethoxy-5-((2S,3R,4S,5S,6R)-3,4,5-trimethoxy-6-methoxymethyl-tetrahydro-pyran-2-yloxy)-tetrahydro-pyran-2-yloxy]-3,4-dimethoxy-6-methyl-tetrahydro-pyran-2-yloxy}-3,4-dimethoxy-hexane-1,5-diol