Stereoselective catalytic double osmylation of 1,2-dihydropyridines leading to amino-arabinose and to amino-altrose derivatives and to potential glycosidase inhibitors.
作者:Théophile Tschamber、Frédérique Backenstrass、Marcus Neuburger、Margareta Zehnder、Jacques Strieth
DOI:10.1016/s0040-4020(01)80825-5
日期:1994.1
Catalytic double osmylation of 1,2-dihydropyridines 1b and 1c proceeded stereospecifically and in good yields to the corresponding aminoarabinose 2b, and 2c derivatives. respectively. In basic medium these piperidinoses equilibrated with their furanose isomers 6b and 6c (both α- and β-anomers). Hydrogenolysis of their urethane moieties led to the corresponding piperidine triols 7a and 7b.
1,2-二氢吡啶1b和1c的催化双渗透作用立体定向进行,并以高收率得到相应的氨基阿拉伯糖2b和2c衍生物。分别。在碱性培养基中,这些哌啶子酶与呋喃糖异构体6b和6c(α-和β-端基异构体)平衡。其氨基甲酸酯部分的氢解产生相应的哌啶三醇7a和7b。