10250-63-2Relevant articles and documents
FIVE-MEMBERED HETEROCYCLIC AMIDES WNT PATHWAY INHIBITOR
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Paragraph 0176; 0178; 0179, (2018/10/19)
The present invention discloses a five-membered heterocyclic amide WNT pathway inhibitor, which belongs to a compound that regulates the activity of a Wnt signaling pathway, and provides a method for preparing such a compound, and the use of such a compound in preparing a medicament that antagonizes the Wnt signaling pathway. The five-membered heterocyclic amide WNT pathway inhibitor provided by the invention has a remarkable anti-tumor activity based on a target-based rational drug design of, and can be used for the development of a new generation of Wnt pathway inhibitors, and has a great clinical application value and considerable market potential.
SUBSTITUTED 1H-PYRAZOL-1,2,4-OXADIAZOLE DERIVATIVES AS SPHINGOSINE RECEPTOR MODULATORS
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Paragraph 196-198, (2014/09/03)
The present invention relates to substituted 1H-pyrazol-1,2,4-oxadiazole derivatives, processes for preparing them, pharmaceutical compositions containing them and their use as pharmaceuticals as modulators of sphingosine-1-phosphate receptors.
New pyrazolium-carboxylates as structural analogues of the pseudo-cross-conjugated betainic alkaloid nigellicine
Schmidt, Andreas,Habeck, Tobias,Kindermann, Markus Karl,Nieger, Martin
, p. 5977 - 5982 (2007/10/03)
Pyrazolium-3-carboxylates were examined as relatives of the betainic alkaloid Nigellicine and as new examples of the sparsely populated class 16 of heterocyclic pseudo-cross-conjugated mesomeric betaines (PCCMB). The title compounds were prepared in a 4-step procedure starting from β-diketo compounds 8 which were cyclized with substituted hydrazines. The resulting isomeric pyrazole esters 9 and 10 were separated and subsequently quaternized with dimethyl sulfate in the presence of nitrobenzene to pyrazolium esters 11 and 12. Saponification was best accomplished in diluted sulfuric acid, which resulted in the formation of the pseudo-cross-conjugated mesomeric betaines 13 and 14 in one step. Protonation to the corresponding carboxylic acids required the treatment of the betaines with tetrafluoroboric acid in dichloromethane. The effect of negative solvatochromism proves the charge separation in the ground state of the molecules. X-ray crystallographic analyses, semiempirical calculations, and ESI mass spectrometric measurements were performed to gain knowledge about the phenomenon of pseudo-cross-conjugation.