Synthesis of
<i>C</i>
‐Glycosyl Amino Acid Building Blocks Suitable for the Solid‐Phase Synthesis of Multivalent Glycopeptide Mimics
作者:Niels R. M. Reintjens、Tony S. Koemans、Nick Zilverschoon、Riccardo Castelli、Robert A. Cordfunke、Jan Wouter Drijfhout、Nico J. Meeuwenoord、Herman S. Overkleeft、Dmitri V. Filippov、Gijsbert A. Marel、Jeroen D. C. Codée
DOI:10.1002/ejoc.202000587
日期:2020.8.31
C-glycosyl functionalized lysine building blocks, featuring C-glycosidic derivatives of alpha-rhamnose, alpha-mannose, alpha-galactose, beta-galactose, and beta-N-acetyl glucosamine have been designed and synthesized. These derivatives, equipped with acid-labile protecting groups, are eminently suitable for solid-phase synthesis of multivalent glycopeptides. The lysine building blocks were prepared fromC-allyl
已经设计并合成了五个 C-糖基功能化赖氨酸构件,其特征是 α-鼠李糖、α-甘露糖、α-半乳糖、β-半乳糖和β-N-乙酰氨基葡萄糖的 C-糖苷衍生物。这些衍生物带有酸不稳定保护基团,非常适合多价糖肽的固相合成。赖氨酸结构单元由 C-烯丙基糖苷制备,该糖苷经历了与丙烯酸酯的 Grubbs 交叉复分解,然后还原所得 α,β-不饱和酯中的 C=C 双键,并释放羧酸酯以允许缩合带有赖氨酸侧链。将由此得到的C-糖苷共五种,用于三种糖肽的固相肽合成(SPPS),