Gram-Scale Preparation of ap-(C-Glucopyranosyl)-L-phenylalanine Derivative by a Negishi Cross-Coupling Reaction
作者:Malika Ousmer、Valérie Boucard、Nadège Lubin-Germain、Jacques Uziel、Jacques Augé
DOI:10.1002/ejoc.200500690
日期:2006.3
p-(C-glucopyranosyl)-L-phenylalanine derivative protected to be directly incorporated into a peptidic chain is prepared in 37 % yield from glucose on a gram scale, with a Negishi cross-coupling reaction as the key step. Zincated glucal and p-iodo-L-phenylalanine are involved in this organometallic coupling, which gives rise to a link between the sugar and amino acid moieties in 90 % yield; the β-gluco
以克规模从葡萄糖中以 37% 的产率制备被保护以直接掺入肽链的 p-(C-吡喃葡萄糖基)-L-苯丙氨酸衍生物,其中关键步骤是 Negishi 交叉偶联反应。锌化葡萄糖和对碘-L-苯丙氨酸参与这种有机金属偶联,从而以 90% 的产率在糖和氨基酸部分之间产生联系;C-吡喃糖基氨基酸的β-葡萄糖构型通过葡萄糖双键的立体选择性硼氢化作用确定。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006)