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  • Title: Synthesis of 3-hydroxy-3-cyclohexylbutyric acid derivatives. 2. Cyclic analogues of mevalonic acid.
    Author: Carganico G, Cozzi P, Orsini G.
    Journal: J Med Chem; 1983 Dec; 26(12):1767-9. PubMed ID: 6644746.
    Abstract:
    The sodium salt of (Z)-3-hydroxy-3-(2-hydroxycyclohexyl)butyric acid (I) and its lactone (II) were prepared through the corresponding tert-butyl ester by hydrogenation, over Rh/Al2O3 catalyst, of the phenyl ring of tert-butyl 3-hydroxy-3-(2-hydroxyphenyl)butyrate (III). (Z)-3-Hydroxy-3-(2-methoxycyclohexyl)butyric acid was prepared similarly. (Z)-4-Methyloctahydro-2H-1-benzopyran-2-one was prepared by hydrogenation, over Rh/Al2O3 catalyst, of 4-methylcoumarine, prepared in turn from III by a one-pot procedure comprising hydrolysis, lactonization, and dehydration. The above compounds inhibit acetate incorporation in cholesterol and fatty acids in rat liver slices at 5 X 10(-3) M, but they lack specific inhibitory activity on HMG-CoA reductase.
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