Syntheses Of Glycosides Containing Imidazole, Triazine And Quinoxaline

(4/-Benzyloxy) benzoyldimethylsulfoxide was prepared by the reaction of ethyl 4-benzyloxybenzoate and dimethyl sulfoxide in the presence of sodium hydride, followed by Pummerer reaction with concentrated hydrochloric acid to afford eo-hydroxy-co-thio-methyl-(4/-benzyloxy) acetophenone, which reacted with urea, thiosemicarbazide, semicarbazide hydrochloride and o-phenylenediamine to give imidazolidine-2,4-dione, l,2,4-triazine-3-(thione) one and quinoxaline derivatives, respectively. The glycosides of these heterocyclic compounds were synthesized by phase-transfer catalysis method under the moderate condition. In addition, the solid phase synthesis of quinoxaline derivatives was also explored. All the structure of new compounds were confirmed by IR, 'HNMR, 13CNMR and MS spectra.