Fluorinated Phenylcyclopropylamines. 1. Synthesis and Effect of Fluorine Substitution at the Cyclopropane Ring on Inhibition of Microbial Tyramine Oxidase
作者:Shinichi Yoshida、Oliver G. J. Meyer、Thomas C. Rosen、Günter Haufe、Song Ye、Milton J. Sloan、Kenneth L. Kirk
DOI:10.1021/jm030398k
日期:2004.3.1
s and 2-fluoro-2-phenylcyclopropylalkylamines, as well as 2-fluoro-1-phenylcyclopropylamines and 2-fluoro-1-phenylcyclopropylmethylamines, were synthesized in order to study the effects of fluorinesubstitution on monoamine oxidase inhibition. Inhibitory activity was assayed using commercially available microbial tyramine oxidase. Characterization of tyramine oxidase, carried out prior to the inhibition
Synthesis of enantiopure monofluorinated phenylcyclopropanes by lipase-catalyzed kinetic resolution
作者:Thomas C. Rosen、Günter Haufe
DOI:10.1016/s0957-4166(02)00331-2
日期:2002.7
selectivities from this process were found to be comparable to those observed in the enzymatic acylation. The absolute configurations of the enantiomers were confirmed by X-ray structural analysis of the corresponding enantiopure p-bromophenyl carbamates. In addition, the stereochemistry of the product from the asymmetric cyclopropanation of α-fluoro styrene with a chiral bis(oxazoline) copper(I) catalyst
Synthesis, reactions and structural features of monofluorinated cyclopropanecarboxylates
作者:Günter Haufe、Thomas C. Rosen、Oliver G.J. Meyer、R. Fröhlich、Kari Rissanen
DOI:10.1016/s0022-1139(02)00040-4
日期:2002.4
Monofluorinated cyclopropanecarboxylates are available in racemic or optically active form by transition metal-catalyzed reactions of vinylfluorides with diazoacetates. From α-fluorostyrene and tert-butyl diazoacetate in the presence of 2 mol% of an enantiopure bis(oxazoline) copper complex, a 81:19 mixture of tert-butyl trans- and cis-2-fluoro-2-phenylcyclopropanecarboxylates was obtained with high