Photoinduced glycosylation of alcohols with α-glucosyl trichloroacetimidates, using aryl urea and thioureas as organo photoacids, was examined under long wavelength UV (ultraviolet) irradiation. The results show, for the first time, that such glycosylations proceed effectively to give the corresponding glycosides in high yields. In addition, high β-stereoselectivity was obtained under high concentration conditions, whereas high α-stereoselectivity was realized under low concentration conditions.
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| http://dx.doi.org/10.1021/acs.orglett.6b01404 | DOI Listing |
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