Diastereoselective propargylation of sugar aldehydes. New synthesis of 6-deoxyheptoses
作者:Zbigniew Pakulski、Aleksander Zamojski
DOI:10.1016/s0040-4020(96)01156-8
日期:1997.2
Propargylation of pentofuranose aldehydes by treatment with propargyl bromide in the presence of zinc dust yielded homopropargylic alcohols with a good isolated yield and, in many cases, excellent anti/syn selectivity. Catalytic hydrogenation of the triple bond afforded homoallylic alcohols, valuable substrates for the synthesis of 6-deoxyheptoses. Direct ozonolysis of the triple bond yielded uronic acid esters. (C) 1997, Elsevier Science Ltd.