Discovery of 4-(4-(2-((5-Hydroxy-1,2,3,4-tetrahydronaphthalen-2-yl)(propyl)amino)ethyl)piperazin-1-yl)quinolin-8-ol and Its Analogues as Highly Potent Dopamine D2/D3 Agonists and as Iron Chelator: In Vivo Activity Indicates Potential Application in Symptomatic and Neuroprotective Therapy for Parkinson’s Disease
摘要:
The role of iron in the pathogenesis of Parkinson's disease (PD) has been implicated strongly because of generation of oxidative stress leading to dopamine cell death. In our overall goal to develop bifunctional/multifunctional drugs, we designed dopamine D2/D3 agonist molecules with a capacity to bind to iron. Binding assays were carried out with HEK-293 cells expressing either D2 or D3 receptor with tritiated spiperone to evaluate inhibition constants (K-i). Functional activity of selected compounds was carried out with GTP gamma S binding assay. SAR results identified compounds (+)-19a and (-)-19b as two Potent agonists for both D2 and D3 receptors (EC50 (GTP gamma S); D2 = 4.51 and 1.69 nM and D3 = 1.58 and 0.74 nM for (-)-19b and (+)-19a, respectively). In vitro complexation Studies with 19b demonstrated efficient chelation with iron. Furthermore, the deoxyribose assay with 19b demonstrated potent antioxidant activity. In PD animal model study, (-)-19b exhibited potent in vivo activity in reversing locomotor activity in reserpinized rats and also in producing potent rotational activity in 6-OHDA lesioned rats. This reports initial development of unique lead molecules that might find potential use in Symptomatic and neuroprotective treatment of PD.
Discovery of 4-(4-(2-((5-Hydroxy-1,2,3,4-tetrahydronaphthalen-2-yl)(propyl)amino)ethyl)piperazin-1-yl)quinolin-8-ol and Its Analogues as Highly Potent Dopamine D2/D3 Agonists and as Iron Chelator: In Vivo Activity Indicates Potential Application in Symptomatic and Neuroprotective Therapy for Parkinson’s Disease
摘要:
The role of iron in the pathogenesis of Parkinson's disease (PD) has been implicated strongly because of generation of oxidative stress leading to dopamine cell death. In our overall goal to develop bifunctional/multifunctional drugs, we designed dopamine D2/D3 agonist molecules with a capacity to bind to iron. Binding assays were carried out with HEK-293 cells expressing either D2 or D3 receptor with tritiated spiperone to evaluate inhibition constants (K-i). Functional activity of selected compounds was carried out with GTP gamma S binding assay. SAR results identified compounds (+)-19a and (-)-19b as two Potent agonists for both D2 and D3 receptors (EC50 (GTP gamma S); D2 = 4.51 and 1.69 nM and D3 = 1.58 and 0.74 nM for (-)-19b and (+)-19a, respectively). In vitro complexation Studies with 19b demonstrated efficient chelation with iron. Furthermore, the deoxyribose assay with 19b demonstrated potent antioxidant activity. In PD animal model study, (-)-19b exhibited potent in vivo activity in reversing locomotor activity in reserpinized rats and also in producing potent rotational activity in 6-OHDA lesioned rats. This reports initial development of unique lead molecules that might find potential use in Symptomatic and neuroprotective treatment of PD.
[EN] BIFUNCTIONAL/POLYFUNCTIONAL DOPAMINE D2/D3 AGONIST AS NEUROPROTECTIVE AGENTS FOR TREATMENT OF NEURODEGENERATIVE DISEASES<br/>[FR] AGONISTE BIFONCTIONNEL/POLYFONCTIONNEL DE DOPAMINE D2/D3 EN TANT QU'AGENTS NEUROPROTECTEURS POUR UN TRAITEMENT DE MALADIES NEURODÉGÉNÉRATIVES
申请人:UNIV WAYNE STATE
公开号:WO2010123995A1
公开(公告)日:2010-10-28
Compounds having a piperazinyl group for treating a neurodegenerative disease such as Parkinsons Disease are provided. The compounds are described by general formulae I and Vl: Synthetic scheme for preparing the compounds are also provided.
BIFUNCTIONAL/POLYFUNCTIONAL DOPAMINE D2/D3 AGONIST AS NEUROPROTECTIVE AGENTS FOR TREATMENT OF NEURODEGENERATIVE DISEASES
申请人:Dutta Aloke K.
公开号:US20120108815A1
公开(公告)日:2012-05-03
A precursor for the deposition of a thin film by atomic layer deposition is provided. The compound has the formula M
x
L
y
where M is a metal and L is an amidrazone-derived ligand or an amidate-derived ligand. A process of forming a thin film using the precursors is also provided.
Discovery of 4-(4-(2-((5-Hydroxy-1,2,3,4-tetrahydronaphthalen-2-yl)(propyl)amino)ethyl)piperazin-1-yl)quinolin-8-ol and Its Analogues as Highly Potent Dopamine D2/D3 Agonists and as Iron Chelator: In Vivo Activity Indicates Potential Application in Symptomatic and Neuroprotective Therapy for Parkinson’s Disease
作者:Balaram Ghosh、Tamara Antonio、Maarten E. A. Reith、Aloke K. Dutta
DOI:10.1021/jm901618d
日期:2010.3.11
The role of iron in the pathogenesis of Parkinson's disease (PD) has been implicated strongly because of generation of oxidative stress leading to dopamine cell death. In our overall goal to develop bifunctional/multifunctional drugs, we designed dopamine D2/D3 agonist molecules with a capacity to bind to iron. Binding assays were carried out with HEK-293 cells expressing either D2 or D3 receptor with tritiated spiperone to evaluate inhibition constants (K-i). Functional activity of selected compounds was carried out with GTP gamma S binding assay. SAR results identified compounds (+)-19a and (-)-19b as two Potent agonists for both D2 and D3 receptors (EC50 (GTP gamma S); D2 = 4.51 and 1.69 nM and D3 = 1.58 and 0.74 nM for (-)-19b and (+)-19a, respectively). In vitro complexation Studies with 19b demonstrated efficient chelation with iron. Furthermore, the deoxyribose assay with 19b demonstrated potent antioxidant activity. In PD animal model study, (-)-19b exhibited potent in vivo activity in reversing locomotor activity in reserpinized rats and also in producing potent rotational activity in 6-OHDA lesioned rats. This reports initial development of unique lead molecules that might find potential use in Symptomatic and neuroprotective treatment of PD.