1455-82-9

Upstream product

• 18885-93-3 4-tert-butyl-3-methyl-5-(4-nitro-phenyl)-4,5-dihydro-[1,2,4]oxadiazole 
• 636-98-6 p-nitrobenzene iodide 
• 201230-82-2 carbon monoxide 
• 118493-85-9 acetamide oxime 
• 22059-22-9 N-hydroxyacetamidine 
• 62-23-7 4-nitro-benzoic acid 
• 122-04-3 4-nitro-benzoyl chloride 
• 118493-85-9 N-hydroxyacetamidine 
• 188118-39-0 N,N-Diethyl-N'-hydroxy-4-nitro-benzamidine 
• 1011-84-3 4-nitrobenzohydroximoyl chloride 
• 59562-61-7 3-methyl-5-(4-nitro-phenyl)-[1,2,4]oxadiazole 4-oxide 
• 35787-71-4 thianthrene cation radical perchlorate 
• 1129-37-9 4-nitrobenzaldehyde oxime 
• 76670-32-1 O-<4-Nitro-benzoyl>-acetamidoxim 

Downstream Products

• 76635-31-9 5-(4'-aminophenyl)-3-methyl-1,2,4-oxadiazole 
• 76629-37-3 p-amino-N-(1-aminoethylidene)benzamide 

Relevant academic research and scientific papers

Novel synthesis of Oxadiazoles via palladium catalysis

Oxadiazoles have been prepared in a one-pot procedure by the palladium- mediated coupling of aryliodides with amidoximes under one atmosphere of carbon monoxide. This reaction proved applicable to both electron-rich and deficient aryliodides.

Discovery of a Potent Glutathione Peroxidase 4 Inhibitor as a Selective Ferroptosis Inducer

Potent and selective ferroptosis regulators promote an intensive understanding of the regulation and mechanisms underlying ferroptosis, which is highly associated with various diseases. In this study, through a stepwise structure optimization, a potent and selective ferroptosis inducer was developed targeting to inhibit glutathione peroxidase 4 (GPX4), and the structure-activity relationship (SAR) of these compounds was uncovered. Compound26aexhibited outstanding GPX4 inhibitory activity with a percent inhibition up to 71.7% at 1.0 μM compared to 45.9% of RSL-3. At the cellular level,26acould significantly induce lipid peroxide (LPO) increase and effectively induce ferroptosis with satisfactory selectivity (the value of 31.5). The morphological analysis confirmed the ferroptosis induced by26a. Furthermore,26asignificantly restrained tumor growth in a mouse 4T1 xenograft model without obvious toxicity.

1-(CYCLOALKYL-CARBONYL)PROLINE DERIVATIVE

A compound represented by formula (1) (in the formula: ring-D represents a three- to eight-membered hydrocarbon ring; Ra represents an optionally substituted amino C1-6 alkyl group or the like; Rb1 and Rb2 each independently represent a hydrogen atom, a halogen atom, or the like; Rc represents an optionally substituted C6-10 aryl group or the like; Rd represents a hydrogen atom or the like; and ring-Q represents a (hetero)aryl group or the like which may be substituted with a carboxyl group or the like) or a pharmaceutically acceptable salt thereof exhibits an excellent FXIa inhibitory activity, and is useful as a therapeutic agent against thrombosis or the like.

Construction of 3,5-substituted 1,2,4-oxadiazole rings triggered by tetrabutylammonium hydroxide: A highly efficient and fluoride-free ring closure reaction of O-acylamidoximes

Tetrabutylammonium hydroxide (TBAH) is an efficient and mild alternative to tetrabutylammonium fluoride (TBAF) for base catalyzed cyclizations of 1,2,4-oxadiazoles from O-acylamidoximes. For most 3,5-substituted 1,2,4-oxadiazoles the reactions were dramatically accelerated by addition of 0.1 equiv of TBAH at room temperature. This method was also more generally applicable allowing for a wider range of substrates. Additionally, due to the absence of fluoride, TBAH will not result in corrosion of reactor vessels and therefore is better suited for large-scale synthesis.

Construction of 3,5-substituted 1,2,4-oxadiazole rings triggered by tetrabutylammonium hydroxide: A highly efficient and fluoride-free ring closure reaction of O-acylamidoximes

Tetrabutylammonium hydroxide (TBAH) is an efficient and mild alternative to tetrabutylammonium fluoride (TBAF) for base catalyzed cyclizations of 1,2,4-oxadiazoles from O-acylamidoximes. For most 3,5-substituted 1,2,4-oxadiazoles the reactions were dramatically accelerated by addition of 0.1 equiv of TBAH at room temperature. This method was also more generally applicable allowing for a wider range of substrates. Additionally, due to the absence of fluoride, TBAH will not result in corrosion of reactor vessels and therefore is better suited for large-scale synthesis.

Synthesis and methemoglobinemia-inducing properties of benzocaine isosteres designed as humane rodenticides

A number of isosteres (oxadiazoles, thiadiazoles, tetrazoles and diazines) of benzocaine were prepared and evaluated for their capacity to induce methemoglobinemia - with a view to their possible application as humane pest control agents. It was found that an optimal lipophilicity for the formation of methemoglobin (metHb) in vitro existed within each series, with 1,2,4-oxadiazole 3 (metHb% = 61.0 ± 3.6) and 1,3,4-oxadiazole 10 (metHb% = 52.4 ± 0.9) demonstrating the greatest activity. Of the 5 candidates (compounds 3, 10, 11, 13 and 23) evaluated in vivo, failure to induce a lethal end-point at doses of 120 mg/kg was observed in all cases. Inadequate metabolic stability, particularly towards hepatic enzymes such as the CYPs, was postulated as one reason for their failure.

Muscarinic acetylcholine receptor antagonists: SAR and optimization of tyrosine ureas

SAR exploration of multiple regions of a tyrosine urea template led to the identification of very potent muscarinic acetylcholine receptor antagonists such as 10b with good subtype selectivity for M3 over M1. The structure-activity r

CHROMAN COMPOUNDS AS 5 -HTlB ANTAGONISTS

Chroman derivatives according to Formula (I) below: wherein R1, R2, R3 ,and R4 are as defined in the specification, pharmaceutically-acceptable salts, methods of making, pharmaceutical .compositions containing a

Synthesis of 3,5-disubstituted-1,2,4-oxadiazoles using tetrabutylammonium fluoride as a mild and efficient catalyst

Tetrabutylammonium fluoride (TBAF) was found to be a mild and efficient catalyst for the synthesis of 3,5-disubstituted-1,2,4-oxadiazoles. Using 0.1 - 1.0 equivalents of TBAF in THF for 1 - 24 h at room temperature, alkanoyl- and aroyloxyamidines were converted in high yield to the corresponding 3,5-disubstituted-1,2,4-oxadiazoles. A variety of R and R′ substituents were investigated.

Cycloadditions of nitrile oxides to amidoximes. A general synthesis of 3,5-disubstituted 1,2,4-oxadiazole-4-oxides

The cycloaddition of nitrile oxides to amidoximes is a general method for the synthesis of 3,5-disubstituted 1,2,4-oxadiazole-4-oxides with the same or different substituents. The yields are only moderate since an equivalent amount of the nitrile oxide is consumed by reaction with the amine released in the fragmentation of the primary cycloadducts and reforms the amidoxime. With excess nitrile oxides the 1,2,4-oxadiazole-4-oxides undergo a disproportionation reaction to yield nitroso carbonyl intermediates and 1,2,4-oxadiazoles.