申请人:The Scripps Research Institute
公开号:US11161859B2
公开(公告)日:2021-11-02
The invention is directed to methods of converting a carboxylic acid group in a compound, via a redox active ester, to a corresponding boronic ester by treatment with bis(pinacolato)diboron-alkyllithium complex in the presence of a ligand, a Ni(ll) salt or a copper salt, and an Mg(ll) salt, in the presence of an alkyllithium or a lithium hydroxide or alkoxide salt. The product pinacolato boronate ester can be cleaved to provide a boronic acid. The invention is also directed to methods of preparing various compounds of medical value comprising boronic acid groups, and to novel boronic-acid containing compounds of medicinal value, including an atorvastatin boronic acid analog, a vancomycin aglycone boronic acid analog, and boronic acid containing elastase inhibitors mCBK319, mCBK320, mCBK323, and RPX-7009.
本发明涉及在配体、Ni(ll)盐或铜盐以及 Mg(ll) 盐、烷基锂或氢氧化锂或氧化烷基锂盐存在的情况下,通过氧化还原活性酯与双(频哪醇)二硼烷基锂络合物处理,将化合物中的羧酸基转化为相应的硼酸酯的方法。产物频哪醇硼酸酯经裂解后可得到硼酸。本发明还涉及制备含有硼酸基团的各种具有医疗价值的化合物的方法,以及具有医疗价值的新型含硼酸化合物,包括阿托伐他汀硼酸类似物、万古霉素苷元硼酸类似物和含硼酸的弹性蛋白酶抑制剂 mCBK319、mCBK320、mCBK323 和 RPX-7009。