Asymmetric routes to azasugars from chiral bicyclic lactams. Synthesis of 1,4-dideoxy-1,4-imino-D-lyxitol; L-deoxymannojirimycin; rhammo-1-deoxynojirimycin and 1-deoxy-6-epicastanospermine
作者:A.I Meyers、Charles J Andres、James E Resek、Charlotte C Woodall、Maureen A McLaughlin、Peter H Lee、David A Price
DOI:10.1016/s0040-4020(99)00454-8
日期:1999.7
By employing the appropriate chiral bicyclic lactams, the asymmetric total synthesis of four enantiopure azasugars mentioned in the title were successfully achieved. A series of diastereoselective oxidations () followed by diastereoselective reductions (BH3, 9-BBN) gave good yields of the trisubstituted (16) and tetrasubstituted (2,3,4) pyrrolidine and piperidines respectively.
通过使用合适的手性双环内酰胺,成功实现了标题中提到的四种对映纯氮杂糖的不对称全合成。一系列非对映选择性氧化(的),接着加入非对映选择性的减少(BH 3,9-BBN),得到三取代(的良好产率16)和四取代的(2,3,4)吡咯烷和哌啶分别。