Skeletal rearrangement of seven-membered iminosugars: Synthesis of (−)-adenophorine, (−)-1-epi-adenophorine and derivatives and evaluation as glycosidase inhibitors
作者:Martine Mondon、Frédéric Lecornué、Jérôme Guillard、Shinpei Nakagawa、Atsushi Kato、Yves Blériot
DOI:10.1016/j.bmc.2013.03.035
日期:2013.8
investigated for the alkylation step including organomagnesium, organolithium, organozinc, organoaluminum and organocerium reagents. While diallylzinc proved to be the most efficient to introduce an allyl substituent, disappointing results were obtained with the other organometallic species leading either to lower yields or no reaction. Enzymatic assays indicate that (−)-adenophorine is a moderate α-l-fucosidase
合成了天然产物(+)-腺苷及其1-表-,1-同-类似物和其他衍生物的镜像,并将其评估为糖苷酶抑制剂。合成策略是基于四羟基化的C-烷基氮杂环庚烷的骨架重排,所述四羟基化的C-烷基氮杂环庚烷通过Staudinger / azaWittig /烷基化序列从糖衍生的叠氮吲哚开始获得。已经针对烷基化步骤研究了几种有机金属物质,包括有机镁,有机锂,有机锌,有机铝和有机铈试剂。事实证明,二烯丙基锌是引入烯丙基取代基最有效的方法,但使用其他有机金属物种却获得了令人失望的结果,导致收率降低或没有反应。酶促测定表明(-)-腺苷是中等α-1-岩藻糖苷酶抑制剂。