Two types of CDDS, prepared herein by means of the regular coating technique, are able to achieve site-specific drug delivery targeting at colon following oral administration, and provide a promising strategy to control drug release targeting the desired lower gastrointestinal region.
In a fluorous biphasic catalytic system for Baeyer-Villiger oxidation of cyclic ketones, it was shown that Sn[N(SO 2 C 8 F 17 ) 2 ] 4 catalyst can give an excellent yield and selectivity with the green, safe and cheap 35% aqueous hydrogen peroxide as the oxidant. Furthermore, it was also found that the catalyst can be completely recovered and reused without loss of its activity in the fluorous immobilized phase.
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