Applicability of Methyl 2,3,4-Tri-O-benzoyl-1-methanesulfonyl-a-D-glucopyranuronate as a Novel Quaternary Glucuronyl Reagent for Tertiary Amines
摘要:
Applicability of a methyl 2,3,4-tri-O-benzoyl-1-methanesulfonyl-alpha-D-glucopyranuronate 3 as a novel quaternary glucuronyl reagent was investigated. The reaction of 3 with an aromatic tertiary amines such as pyridine derivatives or imidazole derivatives proceeded to give quaternary N-glucuronides in a moderate yields, but the reaction of 3 with an aliphatic tertiary amine did not occur. In case of the reaction of 3 with nicotine which has aromatic and aliphatic tertiary amines in the molecule, the reaction proceeded selectively on the pyridine ring to give the corresponding N-glucuronide. The present reagent was considered to be useful for the formation of N-quaternary glucuronide from aromatic tertiary amines.