作者:Masayuki Izumi、Osamu Tsuruta、Hironobu Hashimoto
DOI:10.1016/0008-6215(95)00323-1
日期:1996.1
A 3-O- substituted- l -fucose derivative was also prepared from 6-deoxy-β- d -altrofuranose derivatives. 5-Thio- d -arabinopyranose tetraacetate, the 5-demethyl analog of 5-thio- l -fucose, was also synthesized from 5-O- trityl- d -arabinofuranose in 5 steps. 5-Thio- d -arabinose showed weak inhibitory activity against α- l -fucosidase from bovine kidney ( K i = 0.77 mM ).
摘要由5-O-三苯甲基-d-阿拉伯糖基呋喃糖或d-阿拉伯糖二乙基二硫缩醛在C-5上一键延伸,合成了11个步骤的5-巯基-呋喃葡萄糖四乙酸酯。实现了将醚中的MeLi高度非对映选择性地添加到1,2-O-异亚丙基-β-d-阿拉伯糖基戊二醛-1,4-呋喃糖衍生物中,得到相应的6-脱氧-β-d-呋喃糖异构体。良品率高。通过在HMPA中用KSAc取代5-甲苯磺酸酯并反转构型,将硫原子引入6-脱氧-d-呋喃呋喃糖衍生物的C-5处,得到5-硫-1-呋喃葡萄糖。还由6-脱氧-β-d-呋喃糖衍生物制备3-O-取代的-1-岩藻糖衍生物。5-硫代-1-呋喃糖的5-脱甲基类似物5-噻吩基-阿拉伯吡喃喃糖四乙酸酯也由5个步骤由5-O-三苯甲基-d-阿拉伯呋喃糖合成。