Synthesis and pharmacological evaluation of a series of dibenzo[a,d]cycloalkenimines as N-methyl-D-aspartate antagonists
摘要:
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.
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.
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.