5-Amino-5-Deoxy-1-Thioglucopyranosides-Synthesis of Thioglycoside Derivatives of Nojirimycin
摘要:
N-Benzyloxycarbonyl-protected 5-amino-5-deoxyglucofuranose derivative 1 could be readily transformed into 6-O, N-carbonylidene nojirimycin 3 which afforded the corresponding piperidinosyl trichloroacetimidate 6. This compound turned out to be a versatile piperidinosyl donor. Reaction with various mercaptans as accepters in the presence of TMSOTf as catalyst gave 5-aza-1-thioglucopyranosides 7a-c, 9, and 13 which were successfully deprotected.
5-Amino-5-Deoxy-1-Thioglucopyranosides-Synthesis of Thioglycoside Derivatives of Nojirimycin
摘要:
N-Benzyloxycarbonyl-protected 5-amino-5-deoxyglucofuranose derivative 1 could be readily transformed into 6-O, N-carbonylidene nojirimycin 3 which afforded the corresponding piperidinosyl trichloroacetimidate 6. This compound turned out to be a versatile piperidinosyl donor. Reaction with various mercaptans as accepters in the presence of TMSOTf as catalyst gave 5-aza-1-thioglucopyranosides 7a-c, 9, and 13 which were successfully deprotected.