675599-75-4

Upstream product

• 49705-66-0 (E)-2-(4-chloro-2-buten-1-yl)-1H-isoindole-1,3(2H)-dione 
• 41202-77-1 1-(2,3-dichlorophenyl)piperazine 
• 119532-26-2 1-(2,3-dichlorophenyl)-piperazine hydrochloride 
• 104249-15-2 trans-1-bromo-4-phthalimido-2-butene 

Downstream Products

• 790658-27-4 PG₀₁₀₃₇ 
• 675599-26-5 N-{4-[4-(2,3-dichloro-phenyl)-piperazin-1-yl]-but-2-enyl}-4-iodo-benzamide 

Relevant academic research and scientific papers

Design, Synthesis, Structure-Activity Relationship Studies, and Three-Dimensional Quantitative Structure-Activity Relationship (3D-QSAR) Modeling of a Series of O-Biphenyl Carbamates as Dual Modulators of Dopamine D3 Receptor and Fatty Acid Amide Hydrolase

We recently reported molecules designed according to the multitarget-directed ligand paradigm to exert combined activity at human fatty acid amide hydrolase (FAAH) and dopamine receptor subtype D3 (D3R). Both targets are relevant for tackling several types of addiction (most notably nicotine addiction) and other compulsive behaviors. Here, we report an SAR exploration of a series of biphenyl-N-[4-[4-(2,3-substituted-phenyl)piperazine-1-yl]alkyl]carbamates, a novel class of molecules that had shown promising activities at the FAAH-D3R target combination in preliminary studies. We have rationalized the structural features conducive to activities at the main targets and investigated activities at two off-targets: dopamine receptor subtype D2 and endocannabinoid receptor CB1. To understand the unexpected affinity for the CB1 receptor, we devised a 3D-QSAR model, which we then prospectively validated. Compound 33 was selected for PK studies because it displayed balanced affinities for the main targets and clear selectivity over the two off-targets. 33 has good stability and oral bioavailability and can cross the blood-brain barrier.

PHENYL CARBAMATES AND THEIR USE AS INHIBITORS OF THE FATTY ACID AMIDE HYDROLASE (FAAH) ENZYME AND MODULATORS OF THE D3 DOPAMINE RECEPTOR (D3DR)

The invention provides compounds of Formula (I) or pharmaceutically acceptable salts thereof wherein Ar', R1, R2, R3, R4, X, Y are as defined in the description of invention, as multi-target directed ligands (MT

Structurally rigid dopamine d3 receptor selective ligands and process for making them

A family of structurally rigid dopamine D3 receptor selective ligands is described. The family of structurally rigid dopamine D3 receptor selective ligands has the formula wherein A is cis or trans —CH═CH—, —C═C—, or cyclohexyl. B is cis or trans —CH═CH—

Novel heterocyclic trans olefin analogues of N-{4-[4-(2,3-dichlorophenyl) piperazin-1-yl]butyl}arylcarboxamides as selective probes with high affinity for the dopamine D3 receptor

Dopamine D3 receptor subtypes have been hypothesized to play a pivotal role in modulating the reinforcing and drug-seeking effects induced by cocaine. However, definitive pharmacological investigations have been hampered by the lack of highly D3 receptor selective compounds that can be used in vivo. To address this problem, the potent and D3-receptor-selective antagonist NGB 2904 (1, 9H-fluorene-2-carboxylic acid {4-[(2,3-dichlorophenyl)-piperazin-1-yl]- butyl}-amide, Ki (hD3) = 2.0 nM, Ki (hD2L) = 112 nM, D2/D3 selectivity ratio of 56) was chosen as a lead structure for chemical modification in an attempt to reduce its high lipophilicity (c log D = 6.94) while optimizing D3 receptor binding affinity and D2/D3 selectivity. A series of >30 novel analogues were synthesized, and their binding affinities were evaluated in competition binding assays in HEK 293 cells transfected with either D2L, D3, or D4 human dopamine receptors using the high affinity, selective D2-like receptor antagonist 125I-IABN. Structural diversity in the aryl amide end of the molecule was found to have a major influence on (sub)nanomolar D3 receptor affinity and D2/D3 selectivity, which was optimized using a more rigid trans-butenyl linker between the aryl amide and the piperazine. Several analogues demonstrated superior D3 receptor binding affinities and selectivities as compared to the parent ligand. Compound 29 (N-{4-[4-(2,3-dichlorophenyl)-piperazin-1-yl]-trans-but-2-enyl} -4-pyridine-2-yl-benzamide) displayed the most promising pharmacological profile (Ki (hD3) = 0.7 nM, Ki (hD2L) = 93.3 nM, D2/D3 selectivity ratio of 133). In addition, this ligand inhibited quinpirole stimulation of mitogenesis at human dopamine D3 receptors transfected into Chinese hamster ovary (CHO) cells, with an EC50 value of 3.0 nM. Compound 29 was a nearly 5 times more potent antagonist at the D3 receptor than 1 (EC50 = 14.4 nM). Moreover, a decrease in c log D value of ～2 orders of magnitude was determined for this novel D3-receptor-preferring ligand, compared to 1. In summary, chemical modification of 1 has resulted in compounds with high affinity and selectivity for D3 receptors. The most promising candidate, compound 29, is currently being evaluated in animal models of cocaine abuse and will provide an important tool with which to elucidate the role of D3 receptors in drug reinforcement in vivo.

N-{4-[4-(2,3-dichlorophenyl)piperazin-1-yl]butyl, butenyl and butynyl}arylcarboxamides as novel dopamine D3 receptor antagonists

The dopamine D3 receptor subtype has been targeted as a potential neurochemical modulator of the behavioral actions of psychomotor stimulants, such as cocaine. Previous synthetic studies provided structural requirements for high affinity bindin