N-, α-, and β-Substituted 3-Aminopropionic acids: design, syntheses and antiseizure activities
摘要:
A treatment for epilepsy is proposed based on analogues of 3-aminopropionic acid (beta-alanine), a putative neurotransmitter in the central nervous system (CNS). A model three point pharmacophore was proposed based on modelling data obtained from the study of antagonists for both the glial gamma-aminobutyric acid (GABA)-uptake site and the glycine co-agonist site of N-methyl-D-aspartate (NMDA) receptor. Three series of 3-aminopropionic acids containing, N-, alpha-, and beta-substituents, were designed and synthesized to probe the position and the size of a lipophilic binding pocket within the proposed pharmacophore. These analogues were tested in vivo for both their antiseizure activities and their neurologic toxicities. Among the fourteen novel 3-aminopropionic acids synthesized, eight were found to have promising antiseizure activity. This study shows that substitution on the N-terminus confers the greatest antiseizure activity, particularly against pilocarpine-induced seizures. (C) 2002 Elsevier Science Ltd. All rights reserved.
In one aspect, the invention relates to compounds having the formula:
wherein: Ar, Z, R
3
, R
4
and R
5
are as defined in the specification, or a pharmaceutically acceptable salt thereof. These compounds have AT
1
receptor antagonist activity and neprilysin inhibition activity. In another aspect, the invention relates to pharmaceutical compositions comprising such compounds; methods of using such compounds; and process and intermediates for preparing such compounds.
Novel N-(arylsulphonyl) amino acid derivatives, process for their preparation and pharmaceutical compositions containing them
申请人:——
公开号:US20030073641A1
公开(公告)日:2003-04-17
The invention relates to compounds of formula
1
in which R
1
to R
9
, R
16
and R
17
are as defined in claim 1.
These compounds are pharmacologically active.