Synthesis of 3-hydroxy-3-cyclohexylbutyric acid derivatives. 2. Cyclic analogs of mevalonic acid
作者:Germano Carganico、Paolo Cozzi、Gaetano Orsini
DOI:10.1021/jm00366a021
日期:1983.12
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
(Z)-3-羟基-3-(2-羟基环己基)丁酸(I)及其内酯(II)的钠盐是通过相应的叔丁酯在Rh / Al2O3催化剂上加氢制得的。 3-羟基-3-(2-羟基苯基)丁酸叔丁酯的苯环(III)。类似地制备(Z)-3-羟基-3-(2-甲氧基环己基)丁酸。(Z)-4-甲基八氢-2H-1-苯并吡喃-2-酮是通过在Rh / Al2O3催化剂上加氢合成4-甲基香豆素的方法而制得的,4-香豆素是由III通过一锅法(包括水解,内酯化和脱水。上述化合物在5 X 10(-3)M时抑制乙酸盐掺入大鼠肝片中的胆固醇和脂肪酸中,但它们对HMG-CoA还原酶缺乏特异性抑制活性。