期刊
TETRAHEDRON
卷 73, 期 36, 页码 5425-5429出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tet.2017.07.047
关键词
Desilylation; SO3H silica gel; Solid-supported catalyst
资金
- Grants-in-Aid for Scientific Research [16K18850] Funding Source: KAKEN
We applied a desilylation procedure using SO3H silica gel, with the surface modified by alkylsulfonic acid groups, to 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 labile glycosyl and C-N bond, respectively, these bonds tolerated the reaction conditions. These outcomes suggested that the desilylation procedure using SO3H silica gel would be applicable to the deprotection of a variety of types of compounds protected by silyl groups. In a gram scale experiment, the desilylation procedure successfully proceeded without the observation of any silyl residue in the crude product. (C) 2017 Elsevier Ltd. All rights reserved.
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