Process Development and Scale-Up of PPAR α/γ Dual Agonist Lobeglitazone Sulfate (CKD-501)
作者:Hong Woo Lee、Joong Bok Ahn、Sung Kwon Kang、Soon Kil Ahn、Deok-Chan Ha
DOI:10.1021/op060087u
日期:2007.3.1
A scaleable synthetic route to the potent PPARα/γ dual agonistic agent, lobeglitazone (1), used for the treatment of type-2 diabetes was developed. The synthetic pathway comprises an effective five-step synthesis. This process involves a consecutive synthesis of the intermediate, pyrimidinyl aminoalcohol (6), from the commercially available 4,6-dichloropyrimidine (3) without the isolation of pyrimidinyl
开发了一种可扩展的合成途径,开发了用于治疗2型糖尿病的有效PPARα/γ双重激动剂洛贝格列酮(1)。合成途径包括有效的五步合成。该方法涉及从市售的4,6-二氯嘧啶(3)连续合成中间体嘧啶基氨基醇(6),而不分离嘧啶基苯氧基醚(4)。中间体亚苄基-2,4-噻唑烷二酮的区域选择性1,4-还原也得到了显着改善(10),使用Hantzsch二氢吡啶酯(HEH)和硅胶作为酸催化剂。选择洛贝格列酮的硫酸盐形式作为候选化合物,用于进一步的临床前和临床研究。超过2千克硫酸lobeglitazone的(CKD-501,2)在纯度98.5%的GMP批次之后制备。2的总产率从原始药物化学途径的17%提高到52%。