Nuclear Magnetic Resonance Studies of Lecithin-Skatole Interaction

NUCLEAR MAGNETIC RESONANCE STUDY OF THE STRUCTURE OF GLYOXALDIHYDRAZONE

Study of the nuclear magnetic resonance spectra of glyoxaldihydrazone in dimethylsulfoxide and deuterochlorofonn leads to the conclusion that this compound exists predominantly in non-chelate structure

Nuclear magnetic resonance studies of allergens.

Nuclear magnetic resonance studies of phospholipid micelles.

The proton magnetic resonance spectrum of DL-a!-lecithin at 100 MHz in CHCJ solvent is reported. An analysis of the spectrum is made. The chemical shifts of the N-(CH& protons and the resonance peak associated with the condensed water molecule showed concentration dependence with the latter showing the more pronounced response. These chemical shift changes are interpreted in terms of micelle fo...

Nuclear magnetic resonance description of molecular motion and phase separations of cholesterol in lecithin dispersions.

Proton-enhanced 13C nuclear magnetic resonance is used to obtain signals from labeled cholesterols in lecithin dispersions. The [26-(13)C]cholesterol resonance indicates that the aliphatic tail of the molecule undergoes reorientation fast enough to average completely the chemical shift anisotropy. In contrast, [4-(13)C]cholesterol signals are characteristic of limited anisotropic reorientation....

Deuterium nuclear magnetic resonance studies of the interaction between dimyristoylphosphatidylcholine and gramicidin A'.

Deuterium nuclear magnetic resonance spectra of dimyristoylphosphatidylcholines (DMPCs) specifically labeled with deuterium at one of positions 2’, 3’, 4’, 6’, 8’, lo’, 12’, or 14’ of the 2-chain have been recorded at 34.1 MHz in the presence of varying concentrations of the linear pentadecapeptide antibiotic gramicidin A’. Deuterium quadrupole splittings (AvQ) have been used to partially chara...