Polyhydroxylated aziridinylcyclopentanes as glycomimetics: a new competitive inhibitor of α-mannosidase
摘要:
The synthesis of 6, a new competitive inhibitor of jackbean alpha -mannosidase, was achieved in three steps from pyridine, illustrating the promising potential of substituted 6-azabicyclo[3.1.0]hexanes as glycomimetics. (C) 2001 Elsevier Science Ltd. All rights reserved.
Electron transfer initiated photocylizations of N-allylpridinium and quinolinium salts
作者:Ung Chan Yoon、Suzanne L. Quillen、Patrick S. Mariano、Rosemarie Swanson、Jerome L. Stavinoha、Elliott Bay
DOI:10.1016/s0040-4039(00)86983-x
日期:1982.1
Results from study of the photochemistry of N-allylpyridinium and -quinolinium perchlorates demonstrate tht intramolecular electrontransfer occurs to generate cation diradical precursors of products containing the tetrahydroindolizidine moiety. Catalytic hydrogenation of the crude photolysates leads to production of perhydroindolizidines in synthetically useful yields.
A process for producing quaternary salts of high purity is disclosed, comprising reacting a tertiary amine or phosphine with a carbonic acid diester to form a corresponding quaternary carbonate and further mixing it with an acid to perform decarboxylation. The quaternary salts thus obtained are useful compounds which can be used in wide fields as various catalysts, electrolytes, additives, medicaments, etc.