1293284-52-2

Upstream product

• 288-36-8 1,2,3-triazole 
• 13421-13-1 4-chloro-2-iodobenzoic acid 

Downstream Products

• 1597523-93-7 (4-chloro-2-[1,2,3]triazol-2-yl-phenyl)-{(S)-2-[5-(2-trifluoromethoxyphenyl)-[1,2,4]oxadiazol-3-yl]pyrrolidin-1-yl}methanone 
• 1597522-50-3 (5-methyl-2-[1,2,3]triazol-2-yl-phenyl)-{(S)-2-[5-(2-trifluoromethoxyphenyl)-[1,2,4]oxadiazol-3-yl]pyrrolidin-1-yl}methanone 
• 1597519-98-6 (4-chloro-2-[1,2,3]triazol-2-ylphenyl)-{(S)-2-[3-(2-trifluoromethoxyphenyl)-[1,2,4]oxadiazol-5-yl]pyrrolidin-1-yl}methanone 

Relevant academic research and scientific papers

From Oxadiazole to Triazole Analogues: Optimization toward a Dual Orexin Receptor Antagonist with Improved in vivo Efficacy in Dogs

The orexin system is responsible for regulating the sleep-wake cycle. Suvorexant, a dual orexin receptor antagonist (DORA) is approved by the FDA for the treatment of insomnia disorders. Herein, we report the optimization efforts toward a DORA, where our starting point was (5-methoxy-4-methyl-2-[1,2,3]triazol-2-yl-phenyl)-{(S)-2-[5-(2-trifluoromethoxy-phenyl)-[1,2,4]oxadiazol-3-yl]-pyrrolidin-1-yl}methanone (6), a compound which emerged from our in-house research program. Compound 6 was shown to be a potent, brain-penetrating DORA with in vivo efficacy similar to suvorexant in rats. However, shortcomings from low metabolic stability, high plasma protein binding (PPB), low brain free fraction (fu brain), and low aqueous solubility, were identified and hence, compound 6 was not an ideal candidate for further development. Our optimization efforts addressing the above-mentioned shortcomings resulted in the identification of (4-chloro-2-[1,2,3]triazol-2-yl-phenyl)-{(S)-2-methyl-2-[5-(2-trifluoromethoxy-phenyl)-4H-[1,2,4]triazol-3-yl]-pyrrolidin-1-yl}l-methanone (42), a DORA with improved in vivo efficacy compared to 6.

Oxadiazole Derivatives as Dual Orexin Receptor Antagonists: Synthesis, Structure–Activity Relationships, and Sleep-Promoting Properties in Rats

The orexin system plays an important role in the regulation of wakefulness. Suvorexant, a dual orexin receptor antagonist (DORA) is approved for the treatment of primary insomnia. Herein, we outline our optimization efforts toward a novel DORA. We started our investigation with rac-[3-(5-chloro-benzooxazol-2-ylamino)piperidin-1-yl]-(5-methyl-2-[1,2,3]triazol-2-ylphenyl)methanone (3), a structural hybrid of suvorexant and a piperidine-containing DORA. During the optimization, we resolved liabilities such as chemical instability, CYP3A4 inhibition, and low brain penetration potential. Furthermore, structural modification of the piperidine scaffold was essential to improve potency at the orexin 2 receptor. This work led to the identification of (5-methoxy-4-methyl-2-[1,2,3]triazol-2-ylphenyl)-{(S)-2-[5-(2-trifluoromethoxyphenyl)-[1,2,4]oxadiazol-3-yl]pyrrolidin-1-yl}methanone (51), a potent, brain-penetrating DORA with in vivo efficacy similar to that of suvorexant in rats.

SUBSTITUTED 2-AZABICYCLO[3.1.1]HEPTANE AND 2-AZABICYCLO[3.2.1]OCTANE DERIVATIVES AS OREXIN RECEPTOR ANTAGONISTS

There is provided a compound of formula (I), wherein L1 to L3, R1 to R4, X, A and B have meanings given in the description, and pharmaceutically acceptable salts, solvates and prodrugs thereof, which compounds are useful as antagonists of the orexin-1 and orexin-2 receptors or as selective antagonists of the orexin-1 receptor, and thus, in particular, in the treatment or prevention of inter alia substance dependence, addiction, anxiety disorders, panic disorders, binge eating, compulsive disorders, impulse control disorders, cognitive impairment and Alzheimer's disease.

2-(1,2,3-TRIAZOL-2-YL)BENZAMIDE AND 3-(1,2,3-TRIAZOL-2-YL)PICOLINAMIDE DERIVATIVES AS OREXIN RECEPTOR ANTAGONISTS

The present invention relates to 2-(1,2,3-triazol-2-yl)benzamide and 3-(1,2,3-triazol-2-yl)picolinamide derivatives of formula (I) wherein Ar1, Q, and R1 to R5 are as described in the description, to their preparation, to

AZETIDINE AMIDE DERIVATIVES AS OREXIN RECEPTOR ANTAGONISTS

The present invention relates to azetidine amide derivatives derivatives of formula (I) wherein rings A1 A2 and A3 are as described in the description, to pharmaceutically acceptable salts thereof, to their preparation, to

2-(1,2,3-TRIAZOL-2-YL)BENZAMIDE AND 3-(1,2,3-TRIAZOL-2-YL)PICOLINAMIDE DERIVATIVES AS OREXIN RECEPTOR ANTAGONISTS

The present invention relates to 2-(1,2,3-triazol-2-yl)benzamide and 3-(1,2,3-triazol-2- yl)picolinamide derivatives of formula (I) Formula (I) wherein Ar1, Q, and R1 to R5 are as described in the description, to their pre

DISUBSTITUTED OCTAHY-DROPYRROLO [3,4-C] PYRROLES AS OREXIN RECEPTOR MODULATORS

Disubstituted octahydropyrrolo[3,4-c]pyrrole compounds are described, which are useful as orexin receptor modulators. Such compounds may be useful in pharmaceutical compositions and methods for the treatment of diseased states, disorders, and conditions mediated by orexin activity, such as insomnia.

FUSED HETEROCYCLIC COMPOUNDS AS OREXIN RECEPTOR MODULATORS

Disubstituted 3,8-diaza-bicyclo[4.2.0]octane and 3,6-diazabicyclo [3.2.0]heptane compounds are described, which are useful as orexin receptor modulators. Such compounds may be useful in pharmaceutical compositions and methods for the treatment of diseased states, disorders, and conditions mediated by orexin activity, such as insomnia.

DISUBSTITUTED OCTAHY - DROPYRROLO [3,4-C] PYRROLES AS OREXIN RECEPTOR MODULATORS

Disubstituted octahydropyrrolo[3,4-c]pyrrole compounds are described, which are useful as orexin receptor modulators. Such compounds may be useful in pharmaceutical compositions and methods for the treatment of diseased states, disorders, and conditions mediated by orexin activity, such as insomnia.

FUSED HETEROCYCLIC COMPOUNDS AS OREXIN RECEPTOR MODULATORS

Certain disubstituted 3,8-diaza-bicyclo[4.2.0]octane and 3,6-diazabicyclo [3.2.0]heptane are described, which are useful as orexin inhibitors. Such compounds may be useful in pharmaceutical compositions and methods for the treatment of diseased states, disorders, and conditions mediated by orexin activity, such as insomnia.