Synthesis of C-2 catecholic equilin and equilenin derivatives for use in metabolic studies.
作者:SHIGEO IKEGAWA、TAKAO KUROSAWA、MASAHIKO TOHMA
DOI:10.1248/cpb.36.2993
日期:——
In order to clarify the metabolic fate of equine estrogens, 2-hydroxyequilin, 2-hydroxy-equilenin and their isomeric monomethyl ethers were synthesized as authentic specimens. Vanillin and isovanillin were employed as starting materials leading to the desired β-ketosulfoxides (2a, b). Condensatin of the α, β-unsaturated ketones (4a, b) obtained by thermal elimination of 3a and 3b with 2-methylcyclopentane-1, 3-dione provided the triketones (5a, b), which were cyclized to the estrapentens (6a, b). Several oxido-reduction reactions were then performed to give the title compounds (8, 13).
为了明确马雌激素的代谢命运,我们合成了 2-hydroxyequilin 和 2-hydroxy-equilenin 以及它们的异构单甲醚作为真实样本。以香兰素和异香兰素为起始原料,得到了所需的β-酮硫醚(2a、b)。用 2-甲基环戊烷-1, 3-二酮热消除 3a 和 3b 得到的 α, β-不饱和酮(4a, b)的缩合物提供了三酮(5a, b),三酮环化成酯戊烯(6a, b)。然后进行了几个氧化还原反应,得到了标题化合物(8、13)。