Novel Cyclopropyl β-Amino Acid Analogues of Pregabalin and Gabapentin That Target the α2-δ Protein
摘要:
As part of a program aimed at generating compounds with affinity for the alpha(2)-delta subunit of voltage-gated calcium channels, several novel beta-amino acids were prepared using an efficient nitroalkane-mediated cyclopropanation as a key step. Depending on the ester that was chosen, the target amino acids could be prepared in as few as three steps. The cyclopropyl amino acids derived from ketones proved to be potent binders of the alpha 2-beta subunit of voltage-gated calcium channels, but did not interact with the large neutral amino acid system L (leucine) transporter. Anticonvulsant effects were observed in vivo with compound 34 but only after intracerebroventricular (icv) administration, presumably due to inadequate brain concentrations of the drug being achieved following oral dosing. However, pregabalin 1 was active in the DBA/2 model after oral (and icv) dosing, supporting a hypothesis that active transport is a prerequisite for such zwitterionic species to cross the blood-brain barrier.
Novel Cyclopropyl β-Amino Acid Analogues of Pregabalin and Gabapentin That Target the α2-δ Protein
摘要:
As part of a program aimed at generating compounds with affinity for the alpha(2)-delta subunit of voltage-gated calcium channels, several novel beta-amino acids were prepared using an efficient nitroalkane-mediated cyclopropanation as a key step. Depending on the ester that was chosen, the target amino acids could be prepared in as few as three steps. The cyclopropyl amino acids derived from ketones proved to be potent binders of the alpha 2-beta subunit of voltage-gated calcium channels, but did not interact with the large neutral amino acid system L (leucine) transporter. Anticonvulsant effects were observed in vivo with compound 34 but only after intracerebroventricular (icv) administration, presumably due to inadequate brain concentrations of the drug being achieved following oral dosing. However, pregabalin 1 was active in the DBA/2 model after oral (and icv) dosing, supporting a hypothesis that active transport is a prerequisite for such zwitterionic species to cross the blood-brain barrier.
This invention relates to novel cyclopropyl &bgr;-amino acids derivatives of the formula
1
wherein R
1
through R
4
are defined as in the specification, pharmaceutical compositions containing them and their use for the treatment of various central nervous system and other disorders. The cyclopropyl &bgr;-amino acids derivatives of this invention exhibit activity as alpha2delta ligands (&agr;2&dgr; ligands). Such compounds have affinity for the &agr;2&dgr; subunit of a calcium channel.
[EN] CYCLOPROPYL BETA-AMINO ACID DERIVATIVES<br/>[FR] DERIVES D'ACIDES BETA-AMINES DE CYCLOPROPYLE
申请人:WARNER LAMBERT CO
公开号:WO2004065361A2
公开(公告)日:2004-08-05
This invention relates to novel cyclopropyl β-amino acids derivatives of the formula (I) wherein R1 through R4 are defined as in the specification, pharmaceutical compositions containing them and their use for the treatment of various central nervous system and other disorders. The cyclopropyl β-amino acids derivatives of this invention exhibit activity as alpha2delta ligands (α2δ ligands). Such compounds have affinity for the α2δ subunit of a calcium channel.
Novel Cyclopropyl β-Amino Acid Analogues of Pregabalin and Gabapentin That Target the α<sub>2</sub>-δ Protein
作者:Jacob B. Schwarz、Sian E. Gibbons、Shelley R. Graham、Norman L. Colbry、Peter R. Guzzo、Van-Duc Le、Mark G. Vartanian、Jack J. Kinsora、Susan M. Lotarski、Zheng Li、Melvin R. Dickerson、Ti-Zhi Su、Mark L. Weber、Ayman El-Kattan、Andrew J. Thorpe、Sean D. Donevan、Charles P. Taylor、David J. Wustrow
DOI:10.1021/jm0491086
日期:2005.4.1
As part of a program aimed at generating compounds with affinity for the alpha(2)-delta subunit of voltage-gated calcium channels, several novel beta-amino acids were prepared using an efficient nitroalkane-mediated cyclopropanation as a key step. Depending on the ester that was chosen, the target amino acids could be prepared in as few as three steps. The cyclopropyl amino acids derived from ketones proved to be potent binders of the alpha 2-beta subunit of voltage-gated calcium channels, but did not interact with the large neutral amino acid system L (leucine) transporter. Anticonvulsant effects were observed in vivo with compound 34 but only after intracerebroventricular (icv) administration, presumably due to inadequate brain concentrations of the drug being achieved following oral dosing. However, pregabalin 1 was active in the DBA/2 model after oral (and icv) dosing, supporting a hypothesis that active transport is a prerequisite for such zwitterionic species to cross the blood-brain barrier.