Synthesis of 4-Arylethynyl-2-methyloxazole Derivatives as mGluR5 Antagonists for Use in the Treatment of Drug Abuse
作者:Yasuyoshi Iso、Alan P. Kozikowski
DOI:10.1055/s-2005-918503
日期:——
relationship studies directed toward the use of mGluR5 antagonists in the treatment of drug abuse, we sought a convenient means for gaining access to the oxazole analogues of MTEP. Toward this end, the aldehyde group in 2-methyloxazole-4-carboxaldehyde was successfully converted to a trimethylsilylethynyl group via the preparation of a dibromoolefin, conversion to acetylide using NaHMDS and MeLi, and trapping
在针对使用 mGluR5 拮抗剂治疗药物滥用的结构-活性关系研究中,我们寻求一种方便的方法来获得 MTEP 的恶唑类似物。为此,通过制备二溴烯烃,使用 NaHMDS 和 MeLi 转化为乙炔基,以及用 TMSCI 捕获,成功地将 2-甲基恶唑-4-甲醛中的醛基转化为三甲基甲硅烷基乙炔基。将得到的通用中间体 2-甲基-4-[(三甲基甲硅烷基)乙炔基]恶唑进行改进的 Sonogashira 偶联反应,包括与 Bu 4 NF 的原位脱甲硅烷基化反应和钯催化的芳基或杂芳基碘偶联反应,得到所需的恶唑类似物。