作者:Alessandro Bongini、Giuliana Cardillo、Mario Orena、Sergio Sandri、Claudia Tomasini
DOI:10.1016/s0040-4020(01)88622-1
日期:1983.1
Methyl 4-0-trichloroacetimido-2,3,6-trideoxyhex-2-en-α-L-erythropyranoside 3, prepared from methyl 2,3,6-trideoxyhex-2-en-α-L-erythropyranoside 2, underwent a halocyclization reaction to the halooxazoline 4a or 4b, depending on the halonium ion source. By hydrolysis under acidic conditions, 4a and 4b were converted to the corresponding hydrochlorides 5a and 5b, respectively. The dehalogenation reaction
由甲基2,3,6-叔氧己基-2-en-α-L-赤藓吡喃糖苷2制备的甲基4-0-三氯乙酰胺基2,3,6-叔氧己基-2-en-α-L-赤藓糖苷3卤代恶唑啉4a或4b的卤代环化反应,具体取决于the离子源。通过在酸性条件下水解,将4a和4b分别转化为相应的盐酸盐5a和5b。用Bu 3 SnH进行的脱卤反应以非常好的收率得到了甲基3-氨基-2,3,6-三苯氧基-α-L-核吡喃糖苷盐酸盐(甲基α-L-豆蔻酰胺)。