The Synthesis of N‐Glycosyl‐N′‐Pyrazolylmethylene Aminothioureas under a 4Å Molecular Sieve |
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Authors: | Yan‐Wu Zhao Ling‐Hua Cao |
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Institution: | College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi Xinjiang 830046, P. R. China |
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Abstract: | A series of novel N‐glycosyl‐N′‐pyrazolylmethylene aminothioureas ( 4a‐4e, 5a‐5e ) were synthesized from N‐glycosyl‐N′‐aminothioureas ( 2a‐2d ) and 4‐formylpyrazole ( 3a‐3e ). Activated 4Å molecular sieves were adopted for dehydrated reagent to improve the reaction rate and yield. The structures of the new compounds were identified on the basis of IR, 1H NMR and MS spectra. Simultaneously, the compounds were detected by fluorescence spectrophotometer and had preferable fluorescence activity, so they can be selected as a kind of novel fluorescence labeled derivative of sugar. |
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Keywords: | Glycosylisothiocyanate Thiourea 4‐Formylpyrazole 4Å Molecular sieve Fluorescence characteristic |
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