13452-14-7

Usage

Uses

Used in Pharmaceutical Industry:
2-Methyl-1,3-benzoxazole-6-carboxylic acid is used as a key intermediate in the synthesis of orexin 1 receptor antagonists, which are important for the treatment of obesity. Its chemical structure allows for the development of compounds that can effectively target and modulate the orexin 1 receptor, thereby helping in the management of obesity.
Additionally, 2-Methyl-1,3-benzoxazole-6-carboxylic acid is used in the synthesis of novel benzoxazole amides. These amides have been found to act as enhancers of HIV-1 protease inhibitors, which are crucial in the treatment of HIV/AIDS. The compound's unique structure contributes to the development of more effective and potent HIV-1 protease inhibitors, improving the treatment options for patients suffering from the disease.

InChI:InChI=1/C9H7NO3/c1-5-10-7-3-2-6(9(11)12)4-8(7)13-5/h2-4H,1H3,(H,11,12)

Upstream product

• 6427-66-3 4-azidobenzoic acid 
• 64-19-7 acetic acid 
• 136663-23-5 methyl 2-methyl-1,3-benzoxazole-6-carboxylate 
• 1445-45-0 Trimethyl orthoacetate 
• 2374-03-0 4-aminosalicylic acid 
• 713-52-0 methyl 3-hydroxy-4-nitrobenzoate 
• 63435-16-5 3-hydroxy-4-aminobenzoic acid methyl ester 

Downstream Products

• 792173-99-0 1-(2-methylbenzoxazol-6-yl)-3-(1,5-naphthyridin-4-yl)urea 
• 202195-57-1 2-methylbenzoxazole-6 carboxyl chloride 
• 1393746-68-3 C₂₃H₂₉N₃O₃ 
• 5676-60-8 6-amino-2-methylbenzoxazole 

Relevant academic research and scientific papers

Hydrolytic instability of the important orexin 1 receptor antagonist SB-334867: Possible confounding effects on in vivo and in vitro studies

SB-334867 has been an important ligand for the study of the orexin 1 (OX1) receptor due to its high OX1/OX2 selectivity and bioavailability. This ligand however, contains a 2-methylbenzoxazole ring system which is known to undergo hydrolysis, particularly under acidic or basic conditions. The possibility that SB-334867 would be susceptible to significant hydrolysis was evaluated in various formulations and in the solid state. SB-334867 was found to be unstable under conditions commonly employed to prepare stock solutions for in vitro and in vivo studies. In addition, and most alarmingly, the hydrochloride salt of SB-334867 was found to quantitatively decompose to an OX1-inactive product even in the solid state. These findings combine to suggest that studies using SB-334867 (and any other 2-methylbenzoxazole-containing compound) should be performed with great care to avoid the confounding effects of the rapid hydrolytic decomposition of this susceptible structure.

Design, synthesis and evaluation of benzoheterocycle analogues as potent antifungal agents targeting CYP51

To further enhance the anti-Aspergillus efficacy of our previously discovered antifungal lead compound 1, a series of benzoheterocycle analogues were designed, synthesized and evaluated for their in vitro antifungal activity. The most promising compounds 13s and 14a exhibited excellent antifungal activity against C. albicans, C. neoformans, A. fumigatus and fluconazole-resistant C. albicans strains, that was superior or comparable to those of the reference drugs fluconazole and voriconazole. GC–MS analyses suggested that the novel compound 13s might have a similar mechanism to fluconazole by inhibiting fungal lanosterol 14α-demethylase (CYP51). Furthermore, compounds 13s and 14a exhibited low inhibition profiles for various human cytochrome P450 isoforms as well as excellent blood plasma stability.

GEMINAL SUBSTITUTED QUINUCLIDINE AMIDE COMPOUNDS AS AGONISTS OF ALPHA-7 NICOTINIC ACETYLCHOLINE RECEPTORS

The present invention relates to novel geminal substituted quinuclidine amide compounds, and pharmaceutical compositions of the same, that are suitable as agonists or partial agonists of α7- nAChR, and methods of preparing these compounds and compositions, and the use of these compounds and compositions in methods of maintaining, treating and/or improving cognitive function. In particular, methods of administering the compound or composition to a patient in need thereof, for example a patient with a cognitive deficiency and/or a desire to enhance cognitive function, that may derive a benefit therefrom.

Benzoxazole and benzothiazole amides as novel pharmacokinetic enhancers of HIV protease inhibitors

A new class of benzoxazole and benzothiazole amide derivatives exhibiting potent CYP3A4 inhibiting properties was identified. Extensive lead optimization was aimed at improving the CYP3A4 inhibitory properties as well as overall ADME profile of these amide derivatives. This led to the identification of thiazol-5-ylmethyl (2S,3R)-4-(2-(ethyl(methyl)amino)-N-isobutylbenzo[d]oxazole- 6-carboxamido)-3-hydroxy-1-phenylbutan-2-ylcarbamate (C1) as a lead candidate for this class. This compound together with structurally similar analogues demonstrated excellent 'boosting' properties when tested in dogs. These findings warrant further evaluation of their properties in an effort to identify valuable alternatives to Ritonavir as pharmacokinetic enhancers.

Diaryl urea analogues of SB-334867 as orexin-1 receptor antagonists

As a part of our program to develop OX1-CB1 bivalent ligands, we required a better understanding of the basic structure-activity relationships (SARs) of orexin antagonists. A series of SB-334867 analogues were synthesized and evaluated in calcium mobilization assays. SAR results suggest that the 2-methylbenzoxazole moiety may be replaced with a disubstituted 4-aminophenyl group without loss of activity and an electron-deficient system is generally preferred at the 1,5-naphthyridine moiety for OX1 antagonist activity. In particular, substitution of larger potential linkers such as n-hexyl provided compound 33 with equivalent activity at the OX1 receptor compared to the lead compound SB-334867. These compounds should be of value in the development of ligands targeting the orexin-1 receptor and its potential heterodimers.

AMIDE COMPOUNDS AS BOOSTERS OF ANTIVIRALS

The present invention relates to compounds that have CYP450 inhibiting properties and are therefore useful as boosters of certain drugs, i.e. they are able to increase at least one of the pharmacokinetic variables of certain drugs when co-administered. The invention further provides the use of said compounds as improvers of the bioavailability of certain drugs. Methods for the preparation of the compounds of the invention and pharmaceutical compositions are also provided.

NOVEL ANTIMALARIA AGENT CONTAINING HETEROCYCLIC COMPOUND

Disclosed is an antimalarial agent containing a compound represented by the formula: [wherein A1 represents a 3-pyridyl group that may have a substituent, a 6-quinolyl group that may have a substituent, or the like; X1 represents a group represented by the formula -C(=O)-NH- or the like; E represents a furyl group, a thienyl group or a phenyl group; with the proviso that A1 may have one to three substituents, and E has one of two substituents] or a salt thereof or hydrates thereof.

ANTIANXIETY DRUGS AND A METHOD OF SCREENING THE SAME

An anxiolytic drug of the invention comprises an orexin receptor antagonist, a pharmacologically acceptable salt thereof, or a solvate thereof as an active ingredient. A method for screening a compound having an anxiolytic action of the invention comprises a step of using orexin-A.

NOVEL ANTIFUNGAL AGENT COMPRISING HETEROCYCLIC COMPOUND

The present invention provides an antifungal agent represented by the formula: [wherein A1 represents a 3-pyridyl group which may have a substituent, a quinolyl group which may have a substituent, or the like; X1 represents a group represented by the formula -NH-C(=O)-, a group represented by the formula -C(=O)-NH-, or the like; E represents a furyl group, a thienyl group, a pyrrolyl group, a phenyl group, a pyridyl group, a tetrazolyl group, a thiazolyl group or a pyrazolyl group; with the proviso that A1 may have 1 to 3 substituents, and E has one or two substituents].

COMPOUND INHIBITING DIPEPTIDYL PEPTIDASE IV

The invention aims to provide a dipeptidyl peptidase IV inhibitor which is satisfactory in respect of activity, stability and safety and has an excellent action as a pharmaceutical agent. The invention is directed to a compound represented by the following general formula or a pharmaceutically acceptable salt thereof: wherein R1 and R2 each represents hydrogen, an optionally substituted C1-6 alkyl group, or -COOR5 whereupon R5 represents hydrogen or an optionally substituted C1-6 alkyl group, or R1 and R2, together with a carbon atom to which they are bound, represent a 3- to 6-membered cycloalkyl group, R3 represents hydrogen or an optionally substituted C6-10 aryl group, R4 represents a hydrogen or a cyano group, D represents -CONR6-, -CO- or -NR6CO-, R6 represents hydrogen or an optionally substituted C1-6 alkyl group, E represents -(CH2)m- whereupon m is an integer of 1 to 3, -CH2OCH2-, or -SCH2-, n is an integer of 0 to 3, and A represents an optionally substituted bicyclic heterocyclic group or bicyclic hydrocarbon group.