Acetic acid (2R,3S,4R,5R,6R)-6-((2R,3S,4R,5R,6R)-3-acetoxy-6-allyloxy-4-benzyloxy-5-benzyloxycarbonylamino-tetrahydro-pyran-2-ylmethoxy)-2-acetoxymethyl-4-benzyloxy-5-benzyloxycarbonylamino-tetrahydro-pyran-3-yl ester 在
ammonium hydroxide 、
对甲苯磺酸 作用下,
反应 4.5h,
生成
[(4aR,6R,7R,8R,8aS)-6-((2R,3S,4R,5R,6R)-6-Allyloxy-5-benzyloxycarbonylamino-3,4-dihydroxy-tetrahydro-pyran-2-ylmethoxy)-8-benzyloxy-2,2-dimethyl-hexahydro-pyrano[3,2-d][1,3]dioxin-7-yl]-carbamic acid benzyl ester