作者:S. David、A. Veyrières
DOI:10.1016/s0008-6215(00)80826-5
日期:1970.5
route, methyl 2-amino-4,4-dimethoxybutyrate (5) was prepared from dl -aspatic acid. Reduction of 5 with lithium aluminium hydride yielded 3-amino-4-hydroxybutyraldehyde dimethyl acetal (6 from which the N-acetyl derivative 7 and the diethyl dithioacetal 9 could be prepared. Acid hydrolysis of the (S-isome 7′ of compound 7, prepared from l -aspartic acid, yielded the crystalline 3-acetamido-2,3-dideoxy-
摘要用
丙二酸乙酯制备了2-
氨基-4,4-二乙氧基
丁酸乙酯(2)。在另一种方法中,由dl-
天冬氨酸制备2-
氨基-
4,4-二甲氧基丁酸甲酯(5)。用
氢化铝锂还原5,得到3-
氨基-
4-羟基丁醛二甲基
乙缩醛(6,可以制备N-乙酰基衍
生物7和
二乙基二
硫缩醛9。酸
水解化合物7的(S-异构体7',由1-
天冬氨酸制备的产物,得到结晶的3-乙酰
氨基-2,3-二脱氧-d-
蔗糖(10')。