361548-95-0Relevant academic research and scientific papers
SUBSTITUTED PYRIMIDINE COMPOUNDS, COMPOSITIONS AND MEDICINAL APPLICATIONS THEREOF
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Paragraph 000186, (2015/03/13)
The present disclosure relates to pyrimidine compounds of formula (I), their stereoisomers, tautomers, pharmaceutically acceptable salts, polymorphs, solvates, and hydrates thereof. The present disclosure also relates to process of preparation of these pyrimidine compounds, and to pharmaceutical compositions containing them. The compounds of the present disclosure are useful in the treatment, prevention or suppression of diseases and disorders mediated by epidermal growth factor receptor (EGFR) family kinases.
A novel antibacterial 8-chloroquinolone with a distorted orientation of the N1-(5-amino-2,4-difluorophenyl) group
Kuramoto, Yasuhiro,Ohshita, Yoshihiro,Yoshida, Jiro,Yazaki, Akira,Shiro, Motoo,Koike, Tohru
, p. 1905 - 1917 (2007/10/03)
Fluoroquinolones represent a major class of antibacterial agents with great therapeutic potential. In this study, we designed m-aminophenyl groups as novel N-1 substituents of naphthyridones and quinolones. Among newly synthesized compounds, 7-(3-aminoazetidin-1-yl)-1-(5-amino-2,4-difluorophenyl)-8-chloro-6- fluoro-4-oxo-1,4-dihydroquinoline-3-carboxylic acid (4) has extremely potent antibacterial activities against Gram (+) as well as Gram (-) bacteria. This compound is significantly more potent than trovafloxacin against clinical isolates: 30 times against Streptococcus pneumoniae and 128 times against methicillin resistant Staphylococcus aureus. The structure-activity relationship (SAR) study revealed that a limited combination of 1-(5-amino-2,4-difluorophenyl) group, 7-(azetidin-1-yl) group, and 8-Cl atom (or Br atom or Me group) gave potent antibacterial activity. An X-ray crystallographic study of a 7-(3-ethylaminoazetidin-1-yl)-8-chloro derivative demonstrated that the N-1 aromatic group was remarkably distorted out of the core quinolone plane by steric repulsion between the C-8 Cl atom and the N-1 substituent. Furthermore, a molecular modeling study of 4 and its analogues demonstrated that a highly distorted orientation was induced by a steric hindrance of the C-8 substituent, such as Cl, Br, or a methyl group. Thus, their highly strained conformation should be a key factor for the potent antibacterial activity.
NOVEL AMIDE COMPOUNDS
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, (2008/06/13)
A compound of the formula (I):R1-A-X-NHCO-Y-R2 ???whereinR1 is heterocyclic group which may have suitable substituents, or phenyl which may have suitable substituents,R2 is condensed phenyl which may have suitable substituents, phenyl which may have suitable substituents, or thienyl which may have suitable substituents,A is a group of the formula:-(CH2)t-(O)m- or in which R3 and R4 are each hydrogen or linked together to form imino,R5 is hydrogen or lower alkyl,t is 0, 1 or 2,p, m and n are each 0 or 1,X is phenylene which may have suitable substituents, or bivalent heterocyclic group containing nitrogen which may have suitable substituents,Y is bond, lower alkylene, or lower alkenylene, and a salt thereof.
