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A series of amphiphilic polyamine dendrimers was efficiently prepared from cholestamine in order to probe the hypothesis that an increasing number of ammonium cations attached to a hydrophobic anchoring group should increasingly facilitate transmembrane ion transport. Results from transport experiments using large unilamellar vesicles are consistent with this new concept.
Philanthotoxin (PhTX) analogs with bulky bis-iminodibenzyl and porphyrin head groups have been prepared. Exciton coupled CD studies show that dependent on the hydrophobicity of the head group PhTX analogs may get amphiphilic properties forming micelles in aqueous solution.
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