The attempted coupling of a carbohydrate α-azido acid with a carbohydrate α-amino ester in the presence of a diimide, hopefully to produce a dipeptide, yielded only the carboxylic anhydride. However, the combination of 4-toluenesulfonyl chloride in pyridine was successful, and four carbohydrate dipeptides were separately produced. One of these dipeptides was further transformed into a tripeptide, and
在二
亚胺存在下尝试将
碳水化合物 α-
叠氮酸与
碳水化合物 α-
氨基酯偶联,希望产生二肽,但仅产生
羧酸酐。然而,4-甲
苯磺酰氯在
吡啶中的结合是成功的,分别产生了四种
碳水化合物二肽。其中一种二肽进一步转化为三肽,另一种转化为六肽。据报道,(3S)-3-azido-3-C-carboxy-3-deoxy-1,2 的单晶 X 射线结构: 5,6-二-O-异亚丙基-α-d-
核糖-己糖,酰胺与 (3S)-3-
氨基-3-脱氧-1,2:5,6-二-O-异亚丙基-3-C-甲氧羰基-α-d-
核糖-己糖。