A structure-guided optimization of pyrido[2,3-d]pyrimidin-7-ones as selective inhibitors of EGFRL858R/T790M mutant with improved pharmacokinetic properties
摘要:
Structural optimization of pyrido[2,3-d]pyrimidin-7-ones was conducted to yield a series of new selective EGFR(T790M) inhibitors with improved pharmacokinetic properties. One of the most promising compound 9s potently suppressed EGFR(L858R/T790M) kinase and inhibited the proliferation of H1975 cells with IC50 values of 2.0 nM and 40 nM, respectively. The compound dose-dependently induced reduction of the phosphorylation of EGFR and downstream activation of ERIC in NCI-H1975 cells. It also exhibited moderate plasma exposure after oral administration and an oral bioavailability value of 16%. Compound 9s may serve as a promising lead compound for further drug discovery overcoming the acquired resistance of non-small cell lung cancer (NSCLC) patients. (C) 2016 Published by Elsevier Masson SAS.
COMPOSITION FOR FORMING LIQUID CRYSTAL ALIGNMENT FILM AND LIQUID CRYSTAL DISPLAY ELEMENT
申请人:SOKI CORPORATION
公开号:US20150056367A1
公开(公告)日:2015-02-26
The present invention, which enables to align a liquid crystal molecule, when no voltage is applied thereto, and also to control pretilt angle of the liquid crystal molecule, relates to a composition for a liquid crystal alignment film comprising components represented by the following (A) to (D):
(A) a meta-phenylene diamine derivative represented by the general formula [1];
(B) a meta-phenylene diamine derivative represented by the general formula [2];
(C) a para-arylene diamine represented by the general formula [3];
(D) a tetracarboxylic acid represented by the general formula [4] or a tetracarboxylic acid anhydride represented by the general formula [4′];
(wherein R
1
represents an alkyl group having 1 to 6 carbon atoms or the like, R
2
represents an alkyl group having 8 to 20 carbon atoms or the like, t moieties of R
a
represent an alkyl group having 1 to 3 carbon atoms or the like, n represents an integer of 1 to 3, t represents an integer of 0 to 4, T represents an oxygen atom or the like, Y represents an amino group, and Z represents a tetravalent hydrocarbon group.).
A liquid crystal-aligning agent comprising at least one of a polyamic acid obtained by reacting (A) a tetracarboxylic acid dianhydride consisting of 70 to 98 mole % of a dianhydride of a tetracarboxylic acid such as
or the like,
and 2 to 30 mole % of a dianhydride of a cyclobutanetetracarboxylic acid, and (B) a diamine compound, and a polymer obtained by imidizing the polyamic acid.
The present invention provides a liquid crystal display device with a high degree of freedom in molecular structure design of an alignment film and with reduced image sticking. The liquid crystal display device includes a pair of substrates; a liquid crystal layer held between the substrates; an alignment film disposed on a liquid crystal layer side surface of at least one of the substrates; and a polymer layer disposed between the liquid crystal layer and the alignment film, the alignment film containing a first polymer containing at least one structure represented by the following formula (1) in a side chain,
wherein R1 represents a C3-C6 branched or cyclic alkylene group, and a hydrogen atom at a para position to a carbonyl group in the phenyl group is optionally replaced.
Transparent, highly heat-resistant polyimide precursor and photosensitive polyimide composition thereof
申请人:Kim Dong-seok
公开号:US20070093640A1
公开(公告)日:2007-04-26
The present invention relates to an aqueous alkali-developable photosensitive polyimide precursor resin composition that is appropriate for highly heat-resistant transparent protection layers and insulation layers for liquid crystal display devices. In more detail, the present invention relates to a negative-type photosensitive transparent polyimide precursor resin composition manufactured in two steps. The first step is the manufacture of a transparent linear polyamic acid (A) from (a-1) one or more kinds of tetracarboxylic acid dianhydrides selected from alicyclic tetracarboxylic acid dianhydrides having 3 to 30 carbon atoms; and (a-2) one or more kinds of diamines selected from aliphatic, alicyclic, or non-conjugated aromatic diamines, having 3 to 30 carbon atoms, having one or more ethylenically unsaturated bonds at side chains as essential components; and the second step is the manufacture of reactive transparent polyimide precursors shown in the following Chemical Formula 1 according to the esterification reaction of the above polyamic acid (A) with ethylenically unsaturated compound (B) containing an epoxy group in the same molecule as the main component. The photosensitive transparent polyimide precursor resin compositions according to the present invention have a superior photosensitivity, and thus, may be used for transparent protection layers and insulation layers of liquid crystal display devices having superior heat resistance, chemical resistance, mechanical strength, and electricity insulation.