Succinic acid (4aR,6S,7R,8S,8aR)-7-benzoyloxy-6-benzyloxy-2-phenyl-hexahydro-pyrano[3,2-d][1,3]dioxin-8-yl ester (2R,3R,4S,5S,6R)-3,4,5-tris-benzoyloxy-6-phenylsulfanyl-tetrahydro-pyran-2-ylmethyl ester 在
盐酸 、
乙醚 、 sodium cyanoborohydride 作用下,
以93%的产率得到Succinic acid (2S,3R,4S,5R,6R)-3-benzoyloxy-2-benzyloxy-6-benzyloxymethyl-5-hydroxy-tetrahydro-pyran-4-yl ester (2R,3R,4S,5S,6R)-3,4,5-tris-benzoyloxy-6-phenylsulfanyl-tetrahydro-pyran-2-ylmethyl ester