3463-03-4Relevant articles and documents
Synthesis of novel EP4 antagonists and their use in cancer and inflammation
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Paragraph 0834; 0839-0843, (2021/09/08)
The present invention relates to a compound capable of effectively antagonizing EP4, which is a compound represented by formula I, or a tautomer, a stereoisomer, a hydrate, a solvate, a pharmaceutically-acceptable salt or a prodrug of the compound represented by formula I. R1 is selected from -CH3, -CHF2, and -CF3; R2 is selected from C2-C6 alkyl, C3-C6 cycloalkyl, halogenated C2-C6 alkyl, and halogenated C3-C6 cycloalkyl; R3 is selected from hydrogen, halogen, C1-C2 alkyl, and fluorinated C1-C2 alkyl; R4 is selected from hydrogen, halogen, C1-C6 alkyl, C1-C6 alkoxy, halogenated C1-C6 alkyl, and halogenated C1-C6 alkoxy.
ADDITIVE FOR IMPARTING ULTRAVIOLET ABSORBENCY AND/OR HIGH REFRACTIVE INDEX TO MATRIX, AND RESIN MEMBER USING SAME
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Paragraph 0362; 0363, (2017/08/26)
Provided is an additive for imparting ultraviolet absorbency, or an additive for imparting a high refractive index, which has satisfactory compatibility with a resin serving as a matrix and can maintain high transparency even if added in high concentrations. Also provided is an additive with which the function of imparting both ultraviolet absorbency and a high refractive index can be realized by means of one kind of additive. This additive is represented by the following Formula (I): wherein at least one of R1a to R9a is a monovalent sulfur-containing group represented by the following Formula (i-1) or Formula (i-2): wherein R10a to R12a each represent a divalent hydrocarbon group or the like; and R13a represents a monovalent hydrocarbon group or the like.
Synthetic strategies to 2′-hydroxy-4′- methylsulfonylacetophenone, a key compound for the preparation of flavonoid derivatives
Gueye, Rokhaya,Pouget, Christelle,Champavier, Yves,Buxeraud, Jacques,Duroux, Jean-Luc,Fagnère, Catherine
, p. 443 - 449 (2014/05/06)
Different strategies for the synthesis of 2′-hydroxy-4′- methylsulfonylacetophenone are reported in the present paper. This compound is considered as a key synthon for the synthesis of new flavonoid derivatives designed as potential cyclooxygenase-2 inhibitors. The retrosynthetic approach via 3′-methylsulfonylacetophenone, which included three synthetic pathways, did not allow us to obtain the expected compound. However, a synthesis from 3-mercaptophenol led to the desired acetophenone in three steps: thiophenol methylation, Friedel-Crafts acetylation and oxidation of the sulphide to the corresponding sulfone. The desired compound, 2′-hydroxy-4′- methylsulfonylacetophenone, will be used as a synthon for the preparation of novel flavonoid derivatives, such as 2′-hydroxychalcones, flavanones, flavones, and flavonols.