Mass Spectrometry Characterization of the 5α-, 7α-, and 7β-Hydroxy Derivatives of β-Sitosterol, Campesterol, Stigmasterol, and Brassicasterol
作者:Renzo Bortolomeazzi、Michela De Zan、Lorena Pizzale、Lanfranco S. Conte
DOI:10.1021/jf9812580
日期:1999.8.1
chromatography mobilities, specific color reactions, and massspectral data with those of the corresponding hydroxy derivatives of cholesterol, which were synthesized in the same manner. The phytosterols had the same behavior to photooxidation as cholesterol and, moreover, the different phytosterols photooxidized at about the same rate. The mass spectra of the trimethylsilyl ethers of the hydroxy derivatives