Asymmetric Synthesis of Polyhydroxy α-Amino Acids with the Sulfinimine-Mediated Asymmetric Strecker Reaction: 2-Amino 2-Deoxy <scp>l</scp>-Xylono-1,5-lactone (Polyoxamic Acid Lactone)
作者:Franklin A. Davis、Kavirayani R. Prasad、Patrick J. Carroll
DOI:10.1021/jo020302e
日期:2002.11.1
2-O-isopropyliden-L-threoses undergo the sulfinimine-mediated Strecker syntheses to give alpha-amino nitriles in good yield and de. A double stereodifferentiation effect was not observed and the diastereoselectivity is controlled by the absolute configuration of the sulfinyl group. Hydrolysis of the amino nitriles afforded the lactone rather than polyoxamic acid.
衍生自受保护的1,2-O-异亚丙基-L-苏糖的多羟基亚砜亚胺经过亚氨基亚胺介导的Strecker合成,以高收率和高产率得到α-氨基腈。没有观察到双立体分化作用,并且非对映选择性是由亚磺酰基的绝对构型控制的。氨基腈的水解得到内酯而不是聚草酰胺酸。