17O nuclear magnetic resonance spectra of steriods

Spectroscopic Methods of Steroid Analysis

“…The 17 O NMR spectra of cholesterol and 31 other steroid alcohols, esters, ketones and acids enriched with 17 O have been described by Smith et al (1993). Natural abundance 17 O NMR data of 74 steroids, including androstanes, estranes, pregnanes, cholanes and cholestane, have been described Kahlig and Robien (1994).…”

Bile Acids as Building Blocks of Supramolecular Hosts

“…We have presented some 15 N-NMR data of bile acid derivatives [ 85 , 98 , 115 ] and we [ 150 ] and Smith et al . [ 151 ] have collected the 17 O-NMR chemical shifts of some bile acid derivatives and other steroidal compounds. We have also used 113 Cd-NMR spectroscopy to investigate Cd 2+ -cation complexation of above mentioned bile acid N -(2-aminoethyl)amides ( 30a - b , Figure 19 ) [ 115 ].…”

17O NMR spectroscopy as a tool to study hydrogen bonding of cholesterol in lipid bilayers

“…Previously, it has been reported that the 17 O NMR chemical shift of cholesterol in acetonitrile at 75 1C was 38.8 ppm with a full width half maximum of 0.7 kHz. 27 However, this temperature is not physiologically relevant and is often incompatible with some phospholipids. Therefore, the chemical shifts in this instance were measured at room temperature.…”