Institute for Research in Biomedicine (IRB Barcelona), Barcelona, Spain.
Org Lett. 2013 Jul 19;15(14):3638-41. doi: 10.1021/ol401517x. Epub 2013 Jun 26.
A practical synthesis of the previously unreported N-acetyl-D-allosamine glycomimetic DAJNAc is described. The reaction sequence involves Pd-catalyzed allylic substitution by phthalimide in an azaheterobicyclic scaffold as the key step. The new iminosugar resulted in being a stronger β-N-acetylglucosaminidase (human placenta) competitive inhibitor than the D-gluco (DNJNAc) and D-galacto (DGJNAc) stereoisomers.
本文描述了一种实用的 N-乙酰-D-allo 胺糖模拟物 DAJNAc 的新型合成方法。该反应序列涉及在氮杂双环骨架中通过邻苯二甲酰亚胺进行钯催化的烯丙基取代,这是关键步骤。新型亚氨基糖的β-N-乙酰葡萄糖苷酶(人胎盘)抑制活性强于 D-葡萄糖(DNJNAc)和 D-半乳糖(DGJNAc)立体异构体。