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Relevant academic research and scientific papers

Synthesis of Thiazoles and Isothiazoles via Three-Component Reaction of Enaminoesters, Sulfur, and Bromodifluoroacetamides/Esters

A three-component strategy for the synthesis of thiazoles and isothiazoles has been developed by employing enaminoesters, fluorodibromoiamides/ester, and sulfur. The thiazoles and isothiazoles were formed via two C-F bond cleavages along with the formation of new C-S, C-N, and N-S bonds. The strategy provides high selectivity for the synthesis of thiazoles/isothiazoles, which have vital applications in drug discovery and development.

Structural insight into the optimization of ethyl 5-hydroxybenzo[g]indol-3-carboxylates and their bioisosteric analogues as 5-LO/m-PGES-1 dual inhibitors able to suppress inflammation

The release of pro-inflammatory mediators, such as prostaglandines (PGs) and leukotrienes (LTs), arising from the arachidonic acid (AA) cascade, play a crucial role in initiating, maintaining, and regulating inflammatory processes. New dual inhibitors of 5-lipoxygenase (5-LO) and microsomal prostaglandin E2 synthase-1 (mPGES-1), that block, at the same time, the formation of PGE2 and LTs, are currently emerged as a highly interesting drug candidates for better pharmacotherapie of inflammation-related disorders. Following our previous studies, we here performed a detailed structure-based design of benzo[g]indol-3-carboxylate derivatives, disclosing several new key factors that affect both enzyme activity. Ethyl 2-(3,4-dichlorobenzyl)-5-hydroxy-1H-benzo[g]indole-3-carboxylate (4b, RAF-01) and ethyl 2-(3,4-dichlorophenyl)-5-hydroxy-1H-benzo[g]indole-3-carboxylate (7h, RAF-02) emerged as the most active compounds of the series. Additionally, together with selected structure based analogues, both derivatives displayed significant in vivo anti-inflammatory properties. In conclusion, modeling and experimental studies lead to the discovery of new candidate compounds prone to further developments as multi-target inhibitors of the inflammatory pathway.

CALPAIN MODULATORS AND THERAPEUTIC USES THEREOF

Disclosed herein are small molecule calpain modulator compositions, pharmaceutical compositions, the use and preparation thereof.

Copper-Catalyzed Tandem Reaction of Enamino Esters with ortho-Halogenated Aromatic Carbonyls: One-Pot Approach to Functionalized Quinolines

An efficient and practical approach for the synthesis of functionalized quinolines has been developed by using the copper-catalyzed tandem C–C bond formation and C–N coupling reaction of enamino esters and ortho-halogenated aromatic carbonyl compounds. Various functional groups were tolerated under the reaction conditions, and a series of quinolines were easily obtained in moderate to good yields. A gram-scale reaction was also performed to demonstrate a further application of this synthetic method.

A rapid access to substituted oxazoles via PIFA-mediated oxidative cyclization of enamides

A facile and rapid access to multi-substituted oxazoles has been achieved under mild reaction conditions in a short reaction time. Reaction of enamides 1 with [bis(trifluoroacetoxy)iodo]benzene (PIFA) in trifluoroethanol (TFE) at room temperature for 15?min afforded the desired oxazoles 2 in moderate to excellent yields (58–98%). A wide range of functional group tolerance has been observed for these transformations.

Reactions of tetrasulfur tetranitride antimony pentachloride complex (S4N4 SbCl5) with primary β-enaminones and β-enamino esters: Synthesis of 4-substituted 3-aroyl-and 3-ethoxycarbonyl-1,2,5-thiadiazoles

The reaction of tetrasulfur tetranitride antimony pentachloride complex (S4N4·SbCl5) with 3-amino-3-alkyl-1-aryl-2-propenones and 3-amino-1,3- diaryl-2-propenones in toluene at 100°C produced 4-substitued 3-aroyl-1,2,5- th

Uracil derivatives and pesticides containing the same as active ingredient

The present invention provides novel uracil derivatives and pesticides which contain the novel uracil derivatives as an active ingredient, and exhibit preventing and controlling effects against harmful living things, especially agricultural insect pests,