Synthesis of Methyl 2,3,6-Trideoxy-4-<i>C</i>-(2,5-dimethoxybenzyl)-α-<scp>l</scp>-<i>threo</i>-hex-2-enopyranoside
作者:Osman Achmatowicz、Barbara Szechner、Jan K. Maurin
DOI:10.1080/07328309808002326
日期:1998.3.1
Abstract Methyl 2,3-O-protected α-L-lyxopyranosid-4-uloses (9 and 19), obtained from L-rhamnose (8), react with 2,5-dimethoxybenzyllithium to afford, with high stereoselectivity, compounds 10a and 20a, respectively. After protection of the 4-OH group, ethers 10b and 20b were transformed via vic-diol deoxygenation reactions into the title compound 3 and its 4-O-benzyl derivative 17. The configuration
摘要从L-鼠李糖(8)中得到的2,3-O-甲基保护的α-L-吡喃果糖基-4-uloses(9和19)与2,5-二甲氧基苄基锂反应制得具有高立体选择性的化合物10a和分别为20a。在保护了4-OH基团之后,醚10b和20b通过vic-二醇脱氧反应被转化为标题化合物3及其4-O-苄基衍生物17。它的区域异构体12b是通过单晶X射线分析确定的。