作者:Irmgard Roling、Hans-Georg Schmarr、Wolfgang Eisenreich、Karl-Heinz Engel
DOI:10.1021/jf970748+
日期:1998.2.1
gamma-Thiolactones [5-alkyldihydro-2(3H)-thiophenones] and delta-thiolactones (6-alkyltetrahydro-2H-thiopyran-2-ones) were synthesized via isothiouronium salts by reaction of the corresponding oxygen-containing lactones with thiourea and hydrobromic acid. The identity of the compounds was confirmed by means of IR, MS, and (1)H and (13)C NMR. Separation of the enantiomers of the thiolactones was achieved
通过异硫脲盐通过相应的含氧内酯与硫脲和氢溴酸的反应合成γ-硫内酯[5-烷基二氢-2(3H)-噻吩]和δ-硫内酯(6-烷基四氢-2H-硫吡喃-2-酮)酸。通过IR,MS,(1)H和(13)C NMR确认化合物的身份。通过庚烷(2,3-二-O-甲基-6-O-TBDMS)-β-环糊精为固定相,通过毛细管气相色谱分离巯基内酯的对映异构体。硫取代氧会诱发热带水果味,对于δ-硫代内酯更为明显。气味阈值取决于环的大小和链长。