Stereoselective aminohomologation of chiral α-alkoxy aldehydes via thiazole addition to nitrones. Application to the synthesis of N-acetyl-d-mannosamine
作者:Alessandro Dondoni、Federico Junquera、Francisco Luis Merchán、Pedro Merino、Tomas Tejero
DOI:10.1016/s0040-4039(00)74694-6
日期:1992.7
The addition of 2-lithiothiazole to nitrones derived from d-glyceraldehyde and d-arabinose affords anti-adducts from which α-amino aldehydes are revealed by thiazole-to-formyl deblocking. The methodology provides a new synthesis of N-acetyl d-mannosamine and d-mannosamine hydrochloride.
在衍生自d-甘油醛和d-阿拉伯糖的硝酮中加入2-硫代噻唑可提供抗加合物,通过噻唑与甲酰基的解封作用可显示出α-氨基醛的抗加合物。该方法提供了N-乙酰基d-甘露糖胺和d-甘露糖胺盐酸盐的新合成方法。