Formation of the 5,6-epoxy derivatives of 7-liydroxy-cholesteryl 3 β-acetates during peroxidation of clholesteryl acetate

نویسندگان

  • G. Lercker
  • R. Bortolomeazzi
  • L. Pizzale
چکیده

La peroxidación térmica del colesteril acetato (OA) produce varios compuestos, la mayoría de los cuales fueron ya identificados en estudios precedentes. Los trimetilsilil (TMS) derivados de los productos de la termodegradación de los hidroperóxidos simples del CA (7ay 7(3-) producen espectros GC-MS que son siempre idénticos a aquellos de la peroxidación de CA, a excepción de los cuatro compuestos que son únicamente detectados como derivados TMS. Estas substancias fueron identificadas comparando los espectros de masa y los tiempos de retención GC con los cuatro isómeros de los derivados epoxi-hidroxi del CA. La presencia de una considerable cantidad de derivados epoxi-hidroxi del CA, especialmente a bajas temperaturas de degradación, proveen una explicación de la formación de otras substancias que fueron Identificadas precedentemente.

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تاریخ انتشار 2009