Cyclization of electrochemically generated nitrogen radicals. A novel synthesis of 11-substituted dibenzo[a,d]cycloheptenimines
作者:Sandor Karady、Edward G. Corley、Newton L. Abramson、Leonard M. Weinstock
DOI:10.1016/s0040-4039(00)99645-x
日期:1989.1
A convenientsynthesis of 11-substituted dibenzo[a,d]cycloheptenimines proceeding via annelation of electrochemically generated nitrogen radicals is described.
Derivatives of 5-methyl-10,11-dihydro-5H-dibenzo-(a,d) cyclohepten-5,10-imine
申请人:Merck & Co., Inc.
公开号:EP0264183A1
公开(公告)日:1988-04-20
Fluoro-and hydroxy-derivatives of 5-methyl-10,11-dihydro-5H-dibenzo[a,d]cyclohepten-5,10-imines wherein the substituents are on non-benzenoid carbons are active anticonvulsants and antagonists of N-methyl-D-aspartate.
Synthesis and pharmacological evaluation of a series of dibenzo[a,d]cycloalkenimines as N-methyl-D-aspartate antagonists
作者:Wayne J. Thompson、Paul S. Anderson、Susan F. Britcher、Terry A. Lyle、J. Eric Thies、Catherine A. Magill、Sandor L. Varga、John E. Schwering、Paulette A. Lyle
DOI:10.1021/jm00164a052
日期:1990.2
A series of 73 dibenzo[a,d]cycloalkenimines were synthesized and evaluated for their ability to displace (+)-10,11-dihydro-5-methyl-5H-dibenzo[a,d]cyclohepten-5,10-imine ([3H]-(+)-10) from its specific binding site on rat cortical membranes. A number of the more active compounds (Ki ranging from 0.006 to 0.21 microM) were evaluated for N-methyl-D-aspartate (NMDA) antagonist activity in the rat cortical slice (Kb ranging from 0.08 to 0.9 microM) and anticonvulsant activity in the mouse against NMDA induced convulsions. The ED50 values ranged from 0.22 to 7.76 mg/kg and correlated reasonably well with the Kb determination. In the dibenzo[a,d]cyclohepten-5,10-imine series, the (+)-5S,10R enantiomer displayed consistently higher levels of biological activity. While substitution at the 3-position of (+)-10 with electronegative atoms generally increased in vitro activity, a loss of potency relative to (+)-10 (MK-801) was observed in vivo for all of the compounds tested.
.alpha.-Effect nucleophiles: a novel and convenient method for the synthesis of dibenzo[a,d]cycloheptenimines
作者:Theresa Rothauser Lamanec、Dean R. Bender、Anthony M. DeMarco、Sandor Karady、Robert A. Reamer、Leonard M. Weinstock
DOI:10.1021/jo00243a031
日期:1988.4
Cyclization of electrochemically generated nitrogen radicals.
作者:Sandor Karady、Edward G. Corley、Newton L. Abramson、Joseph S. Amato、Leonard M. Weinstock
DOI:10.1016/s0040-4020(01)87065-4
日期:1991.1
A novel and convenient synthesis of 11-substituted dibenzo[a,d]cycloheptimines 10 via annelation of electrochemically generated aminium radicals derived from substituted 5-hydroxylamino-5-methyl-5H-dibenzo[a,d]cycloheptenes 14 is described. The scope and limitations of the reaction as well as the effects of reactor design, current density and electrode material on the yield of 10 and the carbocation rearrangement by-product 28 are discussed.