作者:J.S. Brimacombe、(Miss) P.A. Gent
DOI:10.1016/s0008-6215(00)82138-2
日期:1969.2
-talofuranose (2, 10%). These structures were allocated primarily on the basis of mass spectrometry and nuclear magnetic resonance spectroscopy. Oxidation of diacetal 1 with acetic anhydride in methyl sulphoxide gave 2,3:5,6-di-O-isopropylidene- D -talono-1,4-lactone (4). 1,2:5,6-Di-O-isopropylidene-3-O-toluene-p-sulphonyl-β- D -talofuranose (3) was obtained on sulphonylation of diacetal 2.
摘要在无水硫酸铜(II)和硫酸存在下,对α-D-talopyranose进行了乙酰化研究,主要产物为2,3:5,6-di-O-异亚丙基。 -α-D-金属呋喃糖(1,28%)和1,2:5,6-二-O-异亚丙基-β-D-金属呋喃糖(2,10%)。这些结构主要是根据质谱和核磁共振波谱进行分配的。用乙酸酐在甲基亚砜中氧化二缩醛1,得到2,3:5,6-二-O-异亚丙基-D-talono-1,4-内酯(4)。通过二缩醛2的磺酰化获得1,2:5,6-Di-O-异亚丙基-3-O-甲苯-对磺酰基-β-D-呋喃呋喃糖(3)。