The syntheses of O-(3-carboxypropyl)oxime derivatives, i.e. bis-homologues of O-(carboxymethyl)oxime derivatives (CMO), derived from dehydroepiandrosterone, testosterone and estradiol are presented. Both the reaction of steroid ketone with O-(3-carboxypropyl)hydroxylamine, and the reaction of sodium salt of steroid oxime with ethyl 4-bromobutyrate were alternatively evaluated, together with some other methods using successive chain lengthening. The compatibility with acetyl and methoxymethyl protecting groups was studied.
这里提出了从去氢表雄酮、睾酮和雌二醇衍生的O-(3-羧基丙基)肟衍生物,即O-(羧甲基)肟衍生物(CMO)的双同系物的合成。评估了类固醇酮与O-(3-羧基丙基)羟胺的反应,以及类固醇肟的钠盐与乙酸4-溴丁酯的反应,还有使用连续链延长的一些其他方法。研究了与乙酰和甲氧甲基保护基的兼容性。