Flexible Synthesis and Biological Activity of Uronic Acid-Type <i>gem</i>-Diamine 1-<i>N</i>-Iminosugars: A New Family of Glycosidase Inhibitors
作者:Yoshio Nishimura、Eiki Shitara、Hayamitsu Adachi、Minako Toyoshima、Motowo Nakajima、Yoshiro Okami、Tomio Takeuchi
DOI:10.1021/jo982448c
日期:2000.1.1
An efficient and flexible synthetic route to four gem-diamine 1-N-iminosugars of uronic acid-type (D-glucuronic, D-mannuronic, L-iduronic, and L-guluronic acid), a new family of glycosidase inhibitor, from l-galactono-1,4-lactone have been developed in an enantiodivergent fashion through a sequence involving as the key steps (a) the formation of gem-diamine 1-N-iminopyranose ring by the Mitsunobu reaction
一种高效灵活的合成路线,可合成四种糖醛酸酶抑制剂家族的四个糖醛酸类型的宝石-二胺1-N-亚氨基糖(D-葡萄糖醛酸,D-甘露糖醛酸,L-异戊糖醛酸和L-古洛糖醛酸) -半乳糖-1,4-内酯的开发通过对映异构的方式进行,其顺序涉及以下关键步骤:(a)通过胺的Mitsunobu反应形成宝石二胺1-N-亚氨基吡喃糖环,以及(b)通过酮的Wittig反应,硼氢化和氧化以及Sharpless氧化引入羧酸基团。D-葡萄糖醛酸和D-甘露糖醛酸型1-N-亚氨基糖(3S,4R,5R,6R)-和(3S,4R,5R,6S)-4,5-二羟基-6-三氟乙酰氨基-3-哌啶羧酸酸被证明是β-D-葡萄糖醛酸苷酶的有效抑制剂(IC(50)6。