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  • Title: Further studies on the inhibition of sterol biosynthesis in animal cells by 15-oxygenated sterols.
    Author: Schroepfer GJ, Parish EJ, Kandutsch AA.
    Journal: Chem Phys Lipids; 1979 Nov; 25(3):265-85. PubMed ID: 535100.
    Abstract:
    The chemical syntheses of a number of C27 15-oxygenated sterols and their derivatives have been pursued to permit evaluation of their activity in the inhibition of sterol biosynthesis in animal cells in culture. Described herein are chemical syntheses of 3 alpha-benzoyloxy-5 alpha-cholest-8(14)-en-15-one, 5 alpha-cholest-8(14)-en-3 alpha-ol-15-one, 5 alpha-cholest-8(14)-en-15-one-3 beta-yl pyridinium sulfate, 5 alpha-cholest-8(14)-en-15-one-3 beta-yl potassium sulfate (monohydrate), 5 alpha-cholest-8(14)-en-15-one-3 alpha-yl pyridinium sulfate, 5 alpha-cholest-8(14)-en-3 alpha-yl potassium sulfate (monohydrate), 5 alpha-cholest-8(14)-en3,7,15-trione, 5 alpha-cholest-8(14)-en-15 alpha-ol-3-one, 5 alpha, 14 alpha-cholestan-3 beta, 15 beta-diol diacetate, 5 alpha, 14 beta-cholestan-3 beta, 15 beta-diol diacetate, 5 alpha, 14 alpha-cholestan-3 beta, 15 alpha-diol, 5 alpha, 14 alpha-cholestan-15 alpha-ol-3-one, 5 alpha, 14 beta-cholestan-3 beta, 15 beta-diol, 5 alpha, 14 alpha-cholestan-3,15-dione, and 5 alpha, 14 beta-cholestan-3,5-dione. The effects of 8 of the above compounds and of 5 alpha-cholesta-6,8(14)-dien-3 beta-ol-15-one, 3 beta-he misuccinoyloxy-5 alpha-cholest-8(14)-en-15 one, 3 beta-hexadecanoyloxy-5 alpha-cholest-8(14)-en-15-one, 5 alpha-cholest-8(14)-en-3,15-dione, 5 alpha-cholesta-6,8(14)-dien-3,15-dione, 5 alpha-cholest-8-en-3 beta, 15 alpha-diol, 5 alpha-cholest-7-en-3 beta, 15 alpha-diol, 5 alpha-cholest-8(14)-en-15 alpha-ol-3-one, 5 alpha-cholest-8-en-15 alpha-ol-3-one, and 5 alpha-cholest-7-en-15 alpha-ol-3-one on the synthesis of digitonin-precipitable sterols and on levels of HMG-CoA reductase activity have been investigated and compared with previously published data on 7 other C27 15-oxygenated sterols.
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