| 摘要 |
A novel, improved method of synthesizing alkylated bile acid derivatives is provided. Such derivatives include, but are not limited to the active, potent, and selective FXR receptor agonist such as 6-ECDCA and other CA, DCA and CDCA derivatives. The first step of the synthesis selectively oxidates CDCA, CD, or DCA related starting material. An efficient combined deprotonation, trapping, ethylation, deprotection and reduction system is used to produce the desired alkylated bile acid derivatives. This practical synthesis offers a simple and economical pathway suitable for a large-scale manufacturing of alkylated bile acid derivatives including, but not limited to, 6-ECDCA.
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