Deprotection of silyl ethers by using SO3H silica gel: Application to sugar, nucleoside, and alkaloid derivatives
作者:Hideaki Fujii、Naoyuki Shimada、Masaki Ohtawa、Fumika Karaki、Masayoshi Koshizuka、Kohei Hayashida、Mitsuhiro Kamimura、Kazuishi Makino、Tohru Nagamitsu、Hiroshi Nagase
DOI:10.1016/j.tet.2017.07.047
日期:2017.9
silylated sugar, nucleoside, and alkaloid derivatives. The treatment with SO3H silica gel provided desilylated products in good to excellent yield. In the reactions of sugar and nucleoside derivatives, no silyl residue was detected in the crude products, but the crude products of the reaction of alkaloids contained small amounts of silyl residues. Even though the sugar and nucleoside derivatives had a
我们使用甲硅烷基化糖,核苷和生物碱衍生物,使用经烷基磺酸基团修饰的表面的SO 3 H硅胶进行脱甲硅烷基化反应。用SO 3 H硅胶处理可以很好地获得优良的收率的甲硅烷基化产物。在糖和核苷衍生物的反应中,在粗产物中未检测到甲硅烷基残基,但是生物碱反应的粗产物中含有少量甲硅烷基残基。即使糖和核苷衍生物分别具有不稳定的糖基和C N键,这些键仍可耐受反应条件。这些结果表明,使用SO 3进行去甲硅烷基化的程序H硅胶将适用于各种类型的被甲硅烷基保护的化合物的脱保护。在克规模的实验中,脱甲硅烷基化过程成功进行,而未观察到粗产物中的任何甲硅烷基残基。