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Nanoscale drug carriers play a crucial role in reducing side effects of chemotherapy drugs. However, the mononuclear phagocyte system (MPS) and the drug protonation after nanoparticles (NPs) burst release still limit the drug delivery efficiency. In this work, a self‐disguised Nanospy is designed to overcome this problem. The Nanospy is composed of: i) poly (lactic‐co‐glycolic acid)‐polyethylene glycol...
We report the method for synthesis of indole‐ and pyrrole‐fused seven‐membered nitrogen heterocycles by means of acid‐base switchable cyclization reactions. The reactions involved cleavage of amide C−N bonds, chemoselective N‐1 or C‐3 acylation, and 1,4‐Michael addition. This method could be used to construct two different kinds of seven‐membered rings in one step from the same starting material without...