The conversion of the naturally abundant cyclitol, myo-inositol (4), into (+)-nojirimycin (1a), its enantiomer (1b), and their 1-deoxy analogues (2a and 2b) is described. Biological assay of 2a, 2b, and the bisulfite adducts of 1a and 1b (3a and 3b) showed that the compounds having the unnatural L-gluco configuration (2b and 3b) possess moderate-to-high inhibitory activity against almond beta-D-glucosidase
New synthesis of (+)-and (–)-nojirimycin from myo-inositol
作者:Noritaka Chida、Yuka Furuno、Seiichiro Ogawa
DOI:10.1039/c39890001230
日期:——
A report of a newsynthesis of nojirimycin (1a), as well as its antipode (1b), from optically active seven-membered hemiacetal lactones (2a,b) derived frommyo-inositol by a five step reaction; the hydrogen sulphite adduct of (1b) shows high inhibitory activity against β-glucosidase and α-mannosidase, being almost comparable to that of mannojirimycin.