This invention relates generally to methods for preparing certain bile acids from non-mammalian sourced starting materials as well as to synthetic bile acids and compositions comprising such acids wherein the acids are characterized by a different C
14
population than naturally occurring bile acids as well as being free from any mammalian pathogens. This invention is also directed to the synthesis of intermediates useful in the synthesis of such bile acids. Accordingly, the C ring of the steroidal scaffold is oxidized to provide a synthetic route and intermediates to DCA. This invention also provides synthetic methods for preparing deoxycholic acid or a salt thereof starting from aromatic steroids such as estrogen, equilenin, and derivatives thereof. This invention is also directed to intermediates such as 12-oxo or delta-9,11-ene steroids as well as novel processes for their preparation. In preferred embodiments, bile acids are provided herein which have substituents on the B-ring and/or D-ring side chain and optionally on the hydroxy group of the A-ring.
本发明涉及从非哺乳动物来源的起始材料制备某些
胆汁酸的方法,以及合成
胆汁酸和包含这些酸的组合物,其中这些酸的特征是具有与自然存在的
胆汁酸不同的C14种群,并且不含任何哺乳动物病原体。本发明还涉及合成在合成这种
胆汁酸中有用的
中间体。因此,甾体骨架的C环被
氧化以提供合成路线和到DCA的
中间体。本发明还提供了用芳香族类
固醇(如
雌激素、雌
烯酮及其衍
生物)起始制备
脱氧胆酸或其盐的合成方法。本发明还涉及12-
氧代或δ-9,11-
烯类
固醇等
中间体以及其制备的新型过程。在首选实施例中,本发明提供了具有B环和/或D环侧链以及可选地具有A环羟基上取代基的
胆汁酸。