Tertiary (2-haloethyl)amine derivatives of the muscarinic agent McN-A-343, [4-[[N-(3-chlorophenyl)carbamoyl]oxy]-2-butynyl]trimethylammonium chloride
作者:Bjoern Ringdahl、Charlotta Mellin、Frederick J. Ehlert、Margareth Roch、Kathleen M. Rice、Donald J. Jenden
DOI:10.1021/jm00163a046
日期:1990.1
4-[(2-Chloroethyl)methylamino]-2-butynyl N-(3-chlorophenyl)carbamate (2) and 4-[(2-bromoethyl)methylamino]-2-butynyl N-(3-chlorophenyl)carbamate (3) were synthesized. Compounds 2 and 3cyclized at neutral pH to an aziridinium ion (4). The rate constants for the cyclization of 2 and 3 at 37 degrees C were about 0.01 and 0.4 min-1, respectively, as measured by titrimetric analysis and by 1H NMR spectroscopy