Two novel routes to C-linked glycosyl amino acids are described; the first involves elaboration of an exo-glycal and subsequent Ramberg–Bäcklund rearrangement of a sulfone intermediate to give, after functional group manipulation, a protected C-glycosyl serine, while the second uses hydroboration–Suzuki coupling of the same exo-glycal to produce ultimately the corresponding C-glycosyl asparagine analogue.
本文介绍了两种获得 C-连接糖基
氨基酸的新方法:第一种方法涉及外糖醛的制备和随后的砜
中间体的 Ramberg-Bäcklund 重排,经过官能团处理后,得到受保护的 C-糖基
丝氨酸;第二种方法使用
氢硼化-铃木偶联法制备相同的外糖醛,最终得到相应的 C-糖基天冬
酰胺类似物。