Water-soluble calix[6]arenes bearing both acidic protons and sulfonate groups were synthesized. They catalyzed a hydration reaction of 1-benzyl-1,4-dihydronicotinamide (BNAH) according to Michaelis-Menten kineticts and the rate constants were greater by 426–1220 fold than those for noncyclic analogues. Fluorescence data supported the complexation of BNAH with these water-soluble calixarenes. These
High- and low-potential flavin mimics. 2. 3,7,10-Trimethyl-(1H,3H,5H,7H,9H,10H)-pyrimido[5,4-g]pteridine-2,4,6,8-tetrone dianion reduction of carbonyl, nicotinamides, and alkyl disulfide functional groups