作者:David Blomberg、Kay Brickmann、Jan Kihlberg
DOI:10.1016/j.tet.2006.08.080
日期:2006.11
4-disubstituted pyridine as a potential β-strand mimetic has been developed and applied in the synthesis of a tripeptidomimetic of Leu-Gly-Gly. The pyridine scaffold replaces the central glycine, and is substituted with analogues of leucine and glycine in positions 4 and 2, respectively. 2-Fluoro-4-iodopyridine was chosen as the functionalized scaffold and was substituted with protected leucinal in position
已经开发了作为潜在的β链模拟物的2,4-二取代的吡啶的合成途径,并将其用于Leu-Gly-Gly的三肽模拟物的合成中。吡啶支架取代了中央甘氨酸,并分别在位置4和2被亮氨酸和甘氨酸的类似物取代。2-氟-4-碘吡啶被选作官能支架并通过使用格利雅交换反应保护在4位亮氨代替异-丙基氯化镁。甘氨酸部分在位置2通过亲核芳族取代反应(S引入Ñ通过微波照射促进AR)。合成序列涉及12个步骤,总产率为7%。