Abstract The alkaline cleavage of two types of sugar nucleotides has been studied by 1H and 31P NMR in order to obtain information on the stability and decomposition pathways in aqueous solutions under alkaline conditions. The reaction of glucose 1-UDP is straightforward, and products are easy to identify. The results obtained with ribose 5-UDP and ribose 5-phosphate reveal, in contrast, a more complex
摘要 为了获得碱性条件下水溶液中稳定性和分解途径的信息,已通过 1 H 和 31 P NMR 研究了两种类型糖核苷酸的碱性裂解。葡萄糖 1-UDP 反应简单,产物易于识别。相比之下,用核糖 5-UDP 和核糖 5-磷酸获得的结果揭示了一个比预期更复杂的反应系统,并且不可能识别单个中间体。尽管无法获得先前提出的机制的明确证据,但所有光谱证据都与它们一致。结果还强调了条件、pH、离子强度和温度对化学条件下反应性的显着影响。
Esters of Glucose-2-Phosphate: Occurrence and Chemistry
Agrobacterium fabrum C58. G2P esters are also found in irregular glycogen structures. The rare glucopyranosyl-2-phophoryl moiety found in agrocin 84 is the key structural signature enabling its action as a natural antibiotic. Likewise, G2P and G2P esters can also dupe the Agrobacterium agrocinopine catabolism cascade. Such observations illustrate the importance of G2P esters on which we have recently focused