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Showing 1 to 3 of 3 for “"Betaines"”.
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Asymmetric Total Synthesis of (+)-Nominine: Development of a Dual Cycloaddition Strategy for the Synthesis of the Hetisine Alkaloids
… for the preparation of 4-oxidoisoquinolinium betaines. Overall, a 16 step asymmetric synthesis of (+)-nominine was accomplished in 1.3% yield, while (+/-)-nominine was prepared in 15 steps in 6.1% yield.
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Exploring Novel Biophysical Mechanisms In Evolved Optical Systems
… unresolved. Here we show that zwitterionic betaines, long known to exist in millimolar concentrations in coral and clam hosts, generally accelerate photosynthate diffusion. The electric field emanating from these molecules serves to organize water and generate a chemical potential for …
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Solvation Energy Calculations of Homologous Trimethylammoniocarboxylates
… were determined for a homologous series of betaines, (CH₃)₃N+(CH₂)nCOO- where n = 1 to 6. Their structure is composed of only the hydrophilic head group of a surfactant. The solvation energies were determined from both the gas phase energy and free energy of solution. Conformational analysis …