Synthesis of hydantoin analogues of (2S,3R,4S)-4-hydroxyisoleucine with insulinotropic properties
作者:Didier Sergent、Qian Wang、N. André Sasaki、Jamal Ouazzani
DOI:10.1016/j.bmcl.2008.06.081
日期:2008.8
The first synthesis of an optically pure (2R,3R,4S)-hydantoin 2, analogue of (2S,3R,4S)-4-hydroxyisoleucine, was achieved in two steps in un-optimized 35% overall yield from previously reported aldehyde synthon 1. (2R,3R,4S)-Hydantoin is stable at acidic pH. This solves the major drawback of (2S,3R,4S)-4-hydroxyisoleucine that easily cyclizes into inactive lactone. Furthermore, (2R,3R,4S)-hydantoin
光学纯净的(2R,3R,4S)-乙内酰脲2((2S,3R,4S)-4-羟基异亮氨酸类似物)的首次合成是通过两个步骤完成的,该过程得自先前报道的醛合成酶,未优化的总产率为35% 1.(2R,3R,4S)-乙内酰脲在酸性pH下稳定。这解决了(2S,3R,4S)-4-羟基异亮氨酸的主要缺点,该缺点容易环化成惰性内酯。此外,与4-羟基异亮氨酸和胰岛素促泌剂瑞格列奈相比,(2R,3R,4S)-乙内酰脲在25microM时刺激胰岛素分泌增加150%。鉴于其稳定性和生物活性,(2R,3R,4S)-乙内酰脲代表了2型糖尿病管理和控制的良好候选者。