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出 处:《有机化学》2007年第6期744-748,共5页Chinese Journal of Organic Chemistry
基 金:国家自然科学基金(Nos.29962002;20462006)资助项目.
摘 要:以L-α-氨基酸为起始原料,经酯化、氨基保护、肼解制得N-对甲苯磺酰基-L-α-氨基酸酰肼2,再与糖基异硫氰酸酯3~5反应,得到9种新型N-糖基-N'-酰氨基硫脲6~8,然后在Hg(OAc)2/EtOH条件下关环,合成了一系列新的2-对甲苯磺酰氨基烃基-5-糖氨基-1,3,4-噁二唑类化合物9~11.所有新化合物的结构均经IR,1H NMR,MS谱和元素分析确证.The starting material L-α-amino acids were converted into N-p-toluenesulfonyl-L-α-amino acid hydrazides 2 through following steps, esterification, amino protection and hydrazinolysis. The reaction of 2 with glycosyl isothiocyanates 3-5 gave the novel compounds, N-glycosyl-N'-amido thioureas 6-8. The compounds 6-8 were cyclized under the system of Hg(OAc)2/EtOH to afford a series of new compounds, 2p-toluenesulfonylaminoalkyl-5-glycosylarnino-1,3,4-oxadiazoles 9-11. The structures of the new compounds were confirmed by IR, ^1H NMR, MS spectra and elemental analysis.
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