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以取代磺酰肼和糖基异硫氰酸酯反应,生成8种1-取代磺酰基-4-全乙酰糖基氨基硫脲,然后在ClCH2CHO/CH3COONa/DMF条件下关环,区域选择性地合成了一系列新型2-取代磺酰基亚肼基-3-全乙酰糖基-2,3-二氢噻唑.化合物3e的1H-13CHMBC谱图表明1-取代磺酰基-4-全乙酰糖基氨基硫脲与氯乙醛的缩合反应关环位置为氨基硫脲的N-4,而非N-2.所有新化合物的结构均经过1HNMR,13CNMR和元素分析确证,生物活性初步测定结果表明该类二氢噻唑化合物具有一定的除草活性.
Substituted sulfonylhydrazide and glycosyl isothiocyanate to generate 8 kinds of 1-substituted sulfonyl-4-acetyl-acetyl thiosemicarbazones, which were then ring-closed under ClCH2CHO / CH3COONa / DMF, A series of novel 2-substituted sulfonylhydrazono-3-acetylgalactosyl-2,3-dihydrothiazoles were synthesized. The 1H-13CHMBC spectrum of compound 3e shows that 1 -substitutedsulfonyl-4-acetylglucosyl The condensation reaction between thiosemicarbazone and chloroacetaldehyde was N-4, not N-2, of thiosemicarbazone.The structures of all new compounds were confirmed by 1HNMR, 13CNMR and elemental analysis. The preliminary bioassay results indicated that the Analogous dihydrothiazole compounds have some herbicidal activity.