Stereoselective synthesis of (1R,2R)-1-amino-2-hydroxycyclobutanecarboxylic acid—serine derivative—, from racemic or optically active 2-benzyloxycyclobutanone
作者:Damien Hazelard、Antoine Fadel、Christian Girard
DOI:10.1016/j.tetasy.2006.05.014
日期:2006.5
one-pot reaction from readily available 2-benzyloxycyclobutanone gave, by means of an asymmetric Strecker synthesis, a kinetic or thermodynamic nitrile with good selectivity. After separation, the major trans-amino nitrile underwent basic hydrolysis and hydrogenolysis, followed by acidic hydrolysis, to give optically active (1R,2R)-1-amino-2-hydroxycyclobutanecarboxylic acid, serine derivative. The absolute
通过不对称的Strecker合成,由容易获得的2-苄氧基环丁酮进行的简单高效的一锅反应可生成具有良好选择性的动力学或热力学腈。分离后,将主要的反式-氨基腈进行碱性水解和氢解,然后进行酸性水解,得到旋光性的(1 R,2 R)-1-氨基-2-羟基环丁烷羧酸,丝氨酸衍生物。通过对相应的顺式-氨基腈的X射线分析已经确定了绝对构型。