A search for photoresolvable mesogens: synthesis and properties of a series of liquid crystalline, axially chiral 1-benzylidene-4-[4'-[(p-alkylphenyl)ethynyl]phenyl]cyclohexanes
摘要:
A series of axially chiral 1-benzylidene-4-[4'-[(p-alkylphenyl)ethynyl] phenyl]cyclohexanes was prepared in racemic form and as optically active mixtures by application of the Hanessian olefination reaction. These compounds have two spectrally overlapping groups which leads to enhanced circular dichroism. And, with appropriate substituents, they form liquid crystal phases when heated above room temperature. The photochemical and material properties of these compounds were studied to assess their suitability for formation of a chiroptical liquid crystal switch. It was found that the Kuhn anisotropy factor (g(lambda)) is too small for this application.
[EN] SUBSTITUTED PYRAZOLE COMPOUNDS AS TOLL RECEPTOR INHIBITORS<br/>[FR] COMPOSÉS DE PYRAZOLE SUBSTITUÉS UTILISÉS EN TANT QU'INHIBITEURS DU RÉCEPTEUR TOLL
申请人:BRISTOL MYERS SQUIBB CO
公开号:WO2021087181A1
公开(公告)日:2021-05-06
Disclosed are compounds of Formula (I) N-oxides, or salts thereof, wherein G, A, R1, and R5 are defined herein. Also disclosed are methods of using such compounds as inhibitors of signaling through Toll-like receptor 7, or 8, or 9, and pharmaceutical compositions comprising such compounds. These compounds are useful in treating inflammatory and autoimmune diseases.
[EN] NOVEL 5 or 8-SUBSTITUTED IMIDAZO [1, 5-a] PYRIDINES AS SELECTIVE INHIBITORS OF INDOLEAMINE AND/OR TRYPTOPHANE 2, 3-DIOXYGENASES<br/>[FR] NOUVELLES IMIDAZO[1,5-A]PYRIDINES SUBSTITUÉES EN POSITION 5 OU 8 EN TANT QU'INDOLEAMINE ET/OU TRYPTOPHANE 2,3-DIOXYGÉNASES
申请人:BEIGENE LTD
公开号:WO2018054365A1
公开(公告)日:2018-03-29
Disclosed herein are 5 or 8-substituted imidazo [1, 5-a] pyridines and pharmaceutical compositions comprising at least one such 5 or 8-substituted imidazo [1, 5-a] pyridines, processes for the preparation thereof, and the use thereof in therapy. Disclosed herein are certain 5 or 8-substituted imidazo [1, 5-a] pyridines that can be useful for inhibiting indoleamine 2, 3-dioxygenase and/or tryptophane 2, 3-dioxygenase and for treating diseases or disorders mediated thereby.
Cyclic imino derivatives and pharmaceutical compositions containing them
申请人:Karl Thomae GmbH
公开号:US05541343A1
公开(公告)日:1996-07-30
The invention relates to cyclic imino compounds which have, inter alia, valuable pharmacological properties, especially inhibitory effects on cell aggregation, pharmaceutical compositions which contain these compounds and processes for preparing them.
The invention provides a liquid crystal compound having a high stability to heat, light or the like, a wide temperature range of a nematic phase, a small viscosity, a suitable optical anisotropy, a large elastic constant K
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, a large negative dielectric anisotropy and an excellent compatibility with other liquid crystal compounds. The invention provides a liquid crystal composition having characteristics similar to these of the compound. The invention provides a liquid crystal display device having a short response time, low electric power consumption, a low driving voltage, a large contrast and a wide temperature range in which the device can be used.
The compound is a 2,3-difluorobenzene derivative (1) having a combination of a cyclohexane ring, a cyclohexene ring or a benzene ring phenyl and a butene bonding group. The liquid crystal composition includes this compound, and the liquid crystal display device contains this composition.