Treatment of benzyl-protected 2-methoxyethyl glycopyranosides with titanium tetrachloride followed by hydrolysis provides a new method for the preparation of the corresponding 1-OH sugar derivatives. The present method is shown to be useful for the preparation of mono-O-acetyl- and mono-O-allyl-tri-O-benzyl-D-glucopyranoses.
用
四氯化钛处理苄基保护的 2-甲氧基乙基
吡喃糖苷,然后
水解,为制备相应的 1-OH 糖衍
生物提供了一种新方法。本方法显示可用于制备单-O-乙酰基-和单-O-烯丙基-三-O-苄基-
D-吡喃葡萄糖。