3745-79-7Relevant articles and documents
Synthesis of N-trifluoromethyl amides from carboxylic acids
Flavell, Robert R.,Liu, Jianbo,Parker, Matthew F. L.,Toste, F. Dean,Wang, Sinan,Wilson, David M.
supporting information, p. 2245 - 2255 (2021/08/12)
Found in biomolecules, pharmaceuticals, and agrochemicals, amide-containing molecules are ubiquitous in nature, and their derivatization represents a significant methodological goal in fluorine chemistry. Trifluoromethyl amides have emerged as important functional groups frequently found in pharmaceutical compounds. To date, there is no strategy for synthesizing N-trifluoromethyl amides from abundant organic carboxylic acid derivatives, which are ideal starting materials in amide synthesis. Here, we report the synthesis of N-trifluoromethyl amides from carboxylic acid halides and esters under mild conditions via isothiocyanates in the presence of silver fluoride at room temperature. Through this strategy, isothiocyanates are desulfurized with AgF, and then the formed derivative is acylated to afford N-trifluoromethyl amides, including previously inaccessible structures. This method shows broad scope, provides a platform for rapidly generating N-trifluoromethyl amides by virtue of the diversity and availability of both reaction partners, and should find application in the modification of advanced intermediates.
Identification of Phenylpyrazolone Dimers as a New Class of Anti-Trypanosoma cruzi Agents
Sijm, Maarten,Siciliano de Araújo, Julianna,Ramos Llorca, Alba,Orrling, Kristina,Stiny, Lydia,Matheeussen, An,Maes, Louis,de Esch, Iwan J. P.,de Nazaré Correia Soeiro, Maria,Sterk, Geert Jan,Leurs, Rob
supporting information, p. 1662 - 1668 (2019/08/30)
Chagas disease is becoming a worldwide problem; it is currently estimated that over six million people are infected. The two drugs in current use, benznidazole and nifurtimox, require long treatment regimens, show limited efficacy in the chronic phase of infection, and are known to cause adverse effects. Phenotypic screening of an in-house library led to the identification of 2,2′-methylenebis(5-(4-bromophenyl)-4,4-dimethyl-2,4-dihydro-3H-pyrazol-3-one), a phenyldihydropyrazolone dimer, which shows an in vitro pIC50 value of 5.4 against Trypanosoma cruzi. Initial optimization was done by varying substituents of the phenyl ring, after which attempts were made to replace the phenyl ring. Finally, the linker between the dimer units was varied, ultimately leading to 2,2′-methylenebis(5-(3-bromo-4-methoxyphenyl)-4,4-dimethyl-2,4-dihydro-3H-pyrazol-3-one (NPD-0228) as the most potent analogue. NPD-0228 has an in vitro pIC50 value of 6.4 against intracellular amastigotes of T. cruzi and no apparent toxicity against the human MRC-5 cell line and murine cardiac cells.
BIFLUORODIOXALANE-AMINO-BENZIMIDAZOLE KINASE INHIBITORS FOR THE TREATMENT OF CANCER, AUTOIMMUNEINFLAMMATION AND CNS DISORDERS
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Page/Page column 51; 76, (2014/01/17)
The invention relates to a compound of the general formula (I) or a physiologically functional derivative, solvate or salt thereof, (I) wherein A is a bond, alkyl or alkoxy optionally substituted with one or more R" as defined herein, *-N(R"')CO-, *-CON(R"')-, *-N(R'")CON(R"')-, -S-, -SO-, *-N(R'")-, *-N(R'")CO-, *-CON(R'")-, -CO-, *-COO-, *-OOC-, *-S02N(R"')-, -S02, or *-N(R"')-SO2-, wherein R"' is as defined herein and * specifies the point of attachment to X; X is aryl, cycloalkyl, aralkyl, heterocyclyl or heteroaryl, which may be substituted with one or more Rx further described herein; L is a bond or *-N(RN)CO-, *-CON(RN)-, *-N(RN)-, *-C=N(RN)-, *-N(RN)-alkyI-, *-alkyl-N(RN)-, *-N(RN)CON(RN)-, *-CO-, *-S02-, alkyl, *-alkyl-0-alkyl-, *-NCO-CH=CH-, *-CH=CH-CONH-, * -S02N(RN)-, *-N(RN)S02-, or heterocyclyl, wherein * specifies the point of attachment to X; Y is H, alkyl, aryl, aralkyl, cycloalkyl, heterocyclyl or heteroaryl, which may be substituted with one or more RY further described herein; and R and RN are further described herein; as well as their use as a medicament, a pharmaceutical composition comprising them, a method of treatment or prevention of a medical condition entailing the administration thereof, and the use thereof in the manufacture of a medicament for the treatment or prevention of a medical condition, particularly autoimmune inflammatory disorders, CNS disorders, sleeping disorders, or proliferative diseases including cancer. The invention further relates to a specific process for the preparation of said compounds.
