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An enantioselective route to the title compound, a heteroatom substituted close analogue of natural brefeldin A, is described. As a key step in the whole synthesis, concatenation of the lower chain and the cyclopentanone-upper chain moiety was achieved using a Rh-catalyzed Michael addition of a vinyl boronic acid to an enone, which effectively eliminated the problems encountered with the corresponding...
Monodisperse poly(glycidyl methacrylate-divinylbenzene) microspheres were prepared by a simple one-step dispersion polymerization process. Examination of the polymeric microspheres showed that they had a mean particle diameter of 3 μm and dual pore size distribution with mean pore diameters of 300 and 800 Å. The microspheres were functionalized by introducing quaternary ammonium/octadecyl groups to...
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