作者:Manuela Avi、Richard Gaisberger、Sabine Feichtenhofer、Herfried Griengl
DOI:10.1016/j.tet.2009.04.048
日期:2009.7
A de novo synthesis of pentoses is described starting from (Z)-2-buten-1,4-diol (1). The key step is the enzyme catalysed enantioselective HCN-addition to O-protected 4-hydroxybut-2-enal using the hydroxynitrile lyase from Hevea brasiliensis, followed by an asymmetric dihydroxylation. For the cyanohydrin reaction the influence of the configuration of the double bond and of the protecting group was
甲从头合成的戊糖,描述从(起始Ž)-2-丁烯-1,4-二醇(1)。关键步骤是使用巴西橡胶树的羟基腈裂解酶将酶催化的对映选择性HCN加成到O保护的4-羟基丁-2-烯醛中,然后进行不对称二羟基化。对于氰醇反应,研究了双键和保护基的构型的影响。发现二羟基化步骤受位置4上保护基的影响。