Cis- and trans-3-methyl-4-octanolide (1, whiskey lactones) were converted into their thio- (2), thiono- (3), and dithio- (4) derivatives by reaction with phosphorus pentasulfide. The reaction products were characterized by GC-mass spectrometry, (1)H NMR spectroscopy, and GC-olfactometry. Two-dimensional NOESY spectra showed that sulfur is incorporated into the ring with reversal of the absolute configuration
通过与五
硫化二
磷反应,将顺式和反式-
3-甲基-4-辛醇化物(1,
威士忌内酯)转化为
硫代(2),
硫代(3)和二
硫代(4)衍
生物。反应产物通过GC-质谱,(1)H NMR谱和GC-嗅觉法表征。二维NOESY光谱表明,
硫以与C-4处的绝对构型相反的方式掺入环中,而酮氧原子被
硫取代时会保留环构型。通过
庚烷(2,3-二-O-甲基-6-O-叔丁基二甲基甲
硅烷基)-β-
环糊精和
庚烷(2,3,4,3,3,4的顺式和反式对被拆分成对映异构体。 3-二-O-乙酰基-6-O-叔丁基二甲基甲
硅烷基)-β-
环糊精作为手性固定相。