α-Glucosidase inhibitor. Prepd by reduction of nojirimycin: S. Inouye et al., J. Antibiot. 19A, 290 (1966); S. Inouye et al., Tetrahedron 23, 2125 (1968). Isoln from mulberry, Morus spp. (Moraceae): M. Yagi et al., Nippon Nogei Kagaku Kaishi 50, 571 (1976), C.A. 86, 167851r (1977). Production by Bacillus subtilis DSM704: D. C. Stein et al., Appl. Environ. Microbiol. 48, 280 (1984). Total synthesis: H. Setoi et al., Chem. Pharm. Bull. 34, 2642 (1986); H. J. G. Broxterman et al., Rec. Trav. Chim. 106, 571 (1987). HPLC determn: M. D. Cole et al., J. Chromatogr. 445, 295 (1988). Inhibition of α-glucosidase: Y. Yoshikuni, Agric. Biol. Chem. 52, 121 (1988). Antiviral activity: P. S. Sunkara et al., Biochem. Biophys. Res. Commun. 148, 206 (1987). Inhibition of glycoprotein synthesis and secretion: N. Peyrieras et al., EMBO J. 2, 823 (1983); V. Gross et al., Biochem. J. 236, 853 (1986); M. Bollen et al., Biochem. Pharmacol. 37, 905 (1988).