Transition-State Mimetics for HIV Protease Inhibitors: Stereocontrolled Synthesis of Hydroxyethylene and Hydroxyethylamine Isosteres by Ester-Derived Titanium Enolate Syn and Anti-Aldol Reactions
作者:Arun K. Ghosh、Steve Fidanze
DOI:10.1021/jo980159i
日期:1998.9.1
the aminoalkyl epoxides 10 and 15 as well as the gamma-lactone 17 was assembled by our recently developed highly selective ester-derived titanium enolate aldol reactions. The Ti-enolate of 6 reacted with (benzyloxy)acetaldehyde and cinnamaldehyde to provide the syn-aldol product 7 and anti-aldol product 12, respectively. Removal of the chiral template followed by Curtius rearrangement of the resulting
描述了羟乙基二肽等排体和羟烷基胺等排体的氨基烷基环氧化物的立体控制合成。氨基烷基环氧化物10和15以及γ-内酯17的两个立体生成中心的立体化学都是通过我们最近开发的高度选择性的酯衍生的烯醇钛醇醛缩醛反应组装而成的。6的钛烯酸酯与(苄氧基)乙醛和肉桂醛反应,分别提供了顺式-羟醛产物7和反式-羟醛产物12。除去手性模板,然后对所得酸进行库尔修斯重排,从而提供了所需的胺官能度。本发明的合成代表了对一系列其他二肽同等异构体的实用和对映选择性输入,其不限于氨基酸衍生的取代基。