A chiral nitronate dianion from (=d)-glyceraldehyde. Enantiospecific syntheses of 2,3-dideoxy-3-nitro furanosides and pyranosides
作者:Theresa M. Williams、Harry S. Mosher
DOI:10.1016/s0040-4039(01)84574-3
日期:——
A new enantiospecific protocol for the synthesis of 2,3-dideoxy-3- nitro and 3-amino sugars is reported. Chiral nitronate dianion 3, derived from (+)-(=d)-glyceraldehyde, is allylated and the resulting adduct 7 is transformed to either the methyl furanoside 9 or the methyl pyranoside 10 depending on the reaction sequence.
报道了用于合成2,3-二脱氧-3-硝基和3-氨基糖的新的对映体特异性方案。衍生自(+)-(= d)-甘油醛的手性亚硝酸根二价阴离子3被烯丙基化,并且根据反应顺序将所得的加合物7转化为甲基呋喃糖苷9或甲基吡喃糖苷10。