作者:Charles D. Hurd、Herndon Jenkins
DOI:10.1016/s0008-6215(00)81218-5
日期:1966.7
hydrogenated to the hexanetetrol tetraacetate, which exhibited dimorphism. Ozonolysis gave tetra- O -acetyl- D -arabinonic acid and thus provides a new general method for preparing fully acetylated aldonic acids. The CCH part of II-Ac was readily hydrated to COCH 3 , thus yielding an acyclic ketose derivative; but conditions were not found for effecting oxidative coupling of the copper(I) acetylide
摘要通过使3,4,6-三-O-乙酰基-2-溴-D-葡糖醛(I)与丁基锂反应合成了D-lyxo-5--5-己烯-1,2,3,4-四醇(II)。 。化合物I由三-O-乙酰基-D-葡糖醛通过其二溴加合物制备并用三乙胺处理。二溴加合物的α-D-葡萄糖形式被认为是脱氢溴化的活性参与者。类似地由二-O-乙酰基-D-木糖醛制备D-苏式-4-戊炔-1,2,3-三醇。将II乙酰化成其四乙酸酯(II-Ac),并氢化成D-lyxo-1,2,3,4-己四醇。将II-Ac氢化成四乙酸己四醇酯,其表现出二态性。臭氧分解得到四-O-乙酰基-D-阿拉伯糖酸,因此提供了制备完全乙酰化的醛糖酸的新的通用方法。II-Ac的CCH部分很容易水合成COCH3,从而产生无环酮糖衍生物;但是未发现影响乙炔铜(I)氧化偶联的条件。II-Ac的皂化(至II)没有伴随着II进一步裂解成乙炔和D-赤藓糖。氢化铝锂将2,3-二溴四氢吡喃转