作者:Makoto Oba、Shinichi Koguchi、Kozaburo Nishiyama
DOI:10.1016/s0040-4020(02)01218-8
日期:2002.11
of 3,4-dihydroxyglutamic acids was investigated. The key reaction in this synthesis is stereoselective cyanation of an optically active N-acyliminium intermediate derived from l- or d-tartaric acid. The stereoselectivity in the cyanation reaction could be controlled by the protective group of the hydroxyl function. Deprotection of the obtained cyanolactam followed by acidic hydrolysis afforded the desired
研究了3,4-二羟基谷氨酸的简明非对映选择性合成。该合成中的关键反应是衍生自1-酒石酸或d-酒石酸的旋光性N-酰亚胺中间体的立体选择性氰化。氰化反应中的立体选择性可以通过羟基官能团的保护基来控制。所得氰基内酰胺脱保护,然后进行酸水解,得到所需的3,4-二羟基谷氨酸。在该合成中获得的3,4-二羟基谷氨酸为(2 S,3 S,4 R)-,(2 R,3 S,4 R)-,(2 S,3 R,4 S)-和( 2个R,3R,4S)-异构体和后三个化合物是谷氨酸的新衍生物。