Synthesis and biological evaluation of γ-aminophosphonates as potent, subtype-selective sphingosine 1-phosphate receptor agonists and antagonists
摘要:
The synthesis of N-arylamide phosphonates and related arylether and arylamine analogues provided potent, subtype-selective agonists and antagonists of the five known sphingosine I-phosphate (SIP) receptors (S1P(1-5)). To this end, the syntheses of phosphoserine mimetics-selectively protected and optically active phosphonoserines-are described. In vitro binding assays showed that the implementation of phosphonates as phosphate mimetics provided compounds with similar receptor binding affinities as compared to their phosphate precursors. meta-substituted arylamide phosphonates were discovered to be antagonists of the S1P(1) and S1P(3) receptors. When administered to mice, an antagonist blocked the lymphopenia evoked by a SIP receptor agonist and caused capillary leakage in both lung and kidney. (c) 2006 Elsevier Ltd. All rights reserved.
Functional Group Tolerant Kumada−Corriu−Tamao Coupling of Nonactivated Alkyl Halides with Aryl and Heteroaryl Nucleophiles: Catalysis by a Nickel Pincer Complex Permits the Coupling of Functionalized Grignard Reagents
作者:Oleg Vechorkin、Valérie Proust、Xile Hu
DOI:10.1021/ja9027378
日期:2009.7.22
A nickel(II) pincer complex [((Me)NN(2))NiCl] (1) catalyzes Kumada-Corriu-Tamao crosscoupling of nonactivated alkyl halides with aryl and heteroaryl Grignard reagents. The coupling of octyl bromide with phenylmagnesium chloride was used as a test reaction. Using 3 mol % of 1 as the precatalyst and THF as the solvent, and in the presence of a catalytic amount of TMEDA, the coupling product was obtained
A compound having Formula I, Formula II, or Formula III:
Ar
1
may independently be phenylene, substituted phenylene, naphthylene, or substituted naphthylene. Ar
2
is the same or different at each occurrence and is an aryl group. M is the same or different at each occurrence and is a conjugated moiety. T
1
and T
2
are independently the same or different at each occurrence and are conjugated moieties which are connected in a non-planar configuration; a and e are the same or different at each occurrence and are an integer from 1 to 6; b, c, and d are mole fractions such that b+c+d=1.0, with the proviso that c is not zero, and at least one of b and d is not zero, and when b is zero, M has at least two triarylamine units; and n is an integer greater than 1.
Pigment dispersion, method for manufacturing toner, aqueous ink, and triazo compound
申请人:CANON KABUSHIKI KAISHA
公开号:US10678156B2
公开(公告)日:2020-06-09
A pigment dispersion has low viscosity and good dispersion property without depending on pigment species. The pigment dispersion contains a dispersion medium, an organic pigment, and a triazo compound having a specific structure.
The invention relates to compounds of Formula (I). Compounds of the present invention are inhibitors of sphingosine kinase 3, and are useful in the treatment of various disorders and conditions, such as inflammatory disorders.
SUBSTITUTED BENZOCHALCOGENOACENE COMPOUND, THIN FILM COMPRISING THE COMPOUND, AND ORGANIC SEMICONDUCTOR DEVICE INCLUDING THE THIN FILM
申请人:Miyata Yasuo
公开号:US20120190868A1
公开(公告)日:2012-07-26
Provided are a novel compound suitable as an organic semiconductor material, the compound being a substituted benzochalcogenoacene compound represented by the formula (1), a thin film comprising the compound, and an organic semiconductor device having the thin film as a component. In the formula (1), each E independently represents a sulfur or selenium atom, and R
1
and R
2
each independently represents a hydrogen atom, an optionally substituted C
4-30
alkyl group, an optionally substituted C
4-30
alkoxy group, an optionally substituted C
6-30
aryl group, an optionally substituted C
7-30
aralkyl group, an optionally substituted C
4-30
heteroaryl group, an optionally substituted C
5-30
heteroaralkyl group, or an optionally fluorinated C
3-30
trialkylsilyl group, both R
1
and R
2
being not hydrogen atoms.