Parallel solid-phase synthesis of disubstituted (5-biphenyltetrazolyl) hydantoins and thiohydantoins targeting the growth hormone secretagogue receptor
作者:Rune Severinsen、Jesper F. Lau、Kent Bondensgaard、Birgit S. Hansen、Mikael Begtrup、Michael Ankersen
DOI:10.1016/j.bmcl.2003.11.012
日期:2004.1
(i) treatment with isocyanates or isothiocyanates or (ii) successive treatment with triphosgene and primary amines. Using molecular modeling, we were able to jump from L-692,429, a well known non-peptidyl growth hormone secretagogue (GHS), to biphenyltetrazolyl hydantoins, obtaining compounds with IC(50) values below 600 nM after two iterative cycles only.
已经开发了用于合成取代的(5-联苯四唑基)-乙内酰脲和-硫代乙内酰脲的有效固相方案。树脂结合的2-(四唑-5-基)-苯基硼烷与4-溴苯甲醛之间的Suzuki交叉偶联得到相应的四唑基联苯醛。随后使用氨基酸酯进行还原胺化,得到了枢轴树脂结合的氨基酸酯,其通过两种途径转化成乙内酰脲或硫代乙内酰脲:(i)用异氰酸酯或异硫氰酸酯处理或(ii)用三光气和伯胺连续处理。使用分子建模,我们能够从众所周知的非肽基生长激素促分泌素(GHS)L-692,429跃迁至联苯四唑基乙内酰脲,仅经过两个重复循环即可获得IC(50)值低于600 nM的化合物。