作者:Sarah Jane Mear、Timothy F. Jamison
DOI:10.1021/acs.joc.9b02630
日期:2019.11.15
carboxylic acid and ester building blocks by diazotization of S-sulfonyl-cysteines. The thiosulfonate protecting group demonstrated resistance to oxidation and attenuation of sulfur's nucleophilicity by the anomeric effect. The key transformation was optimized by a 22 factorial design of experiment, highlighting the unique reactivity of cysteine derivatives in comparison with aliphatic amino acids.
我们报道了通过S-磺酰基-半胱氨酸的重氮化制备对映体富集的β-硫代-α-羟基和α-氯代羧酸和酯结构单元。硫代磺酸盐保护基通过异头作用表现出抗氧化和硫亲核性减弱的能力。通过22个因子设计的实验优化了关键转化,突出了半胱氨酸衍生物与脂族氨基酸相比的独特反应性。