Interfacial polymerization at unconventional interfaces: an emerging strategy to tailor thin-film composite membranes.

Interfacial polymerization is a well-known process to synthesize separation layers for thin film composite membranes at an immiscible organic liquid-aqueous liquid interface. The organic-aqueous interface determines the diffusion dynamics of monomers and the chemical environment for polymerization, exerting a critical influence on the formation of polymer thin films. This review summarizes recent advances in tailoring interfacial polymerization using interfaces beyond the conventional alkane-water interface to achieve high-performance separation films with designed structures.

Regioselective synthesis and structures of anti-cancer 20(R)-ginsenoside Rg derivatives.

Regioselective synthesis of three novel palmitates of 20(R)-ginsenoside Rg was accomplished via a facile strategy, along with complete assignment of their H and C NMR resonances by 1D and 2D NMR (H-H COSY, DEPT 135, HSQC, HMBC, and NOESY) techniques. The derivatives were tested for anti-proliferative activities against pancreatic cancer PANC-1 cells. Compounds , , and exhibited more potent activity than did 20(R)-ginsenoside Rg.