The compound 1,2-O-propylidene-3-O-isovaleric acyl-5-O-benzoyl-?-D-xylofuranose was synthesized with 4-DMAP as catalyst and DCC as dehydration reagent. Its structure was confirmed by IR、1H NMR、MS spectra and elemental analysis. The pyrolysis of the precursor and the application of the compound in blended cigarette flavoring were studied as well. The results showed that: 1) The synthetic product was the target compound; 2) Temperature has great influence on the types and content of pyrolysis of the compound, which mainly were furan derivatives、myrcene、2-methyl-2-pentenoicacid and so on；3）When the dosage of the synthesized compound was 0.002%-0.003%, it was in harmony with tobacco, and it can improve aroma quality, enhance aroma quantity, reduce irritancy and improve aftertaste of cigarette smoke.