Design and syntheses of novel N′-((4-oxo-4H-chromen-3-yl)methylene)benzohydrazide as inhibitors of cyanobacterial fructose-1,6-/sedoheptulose-1,7-bisphosphatase
摘要:
Cyanobacterial fructose-1,6-/sedoheptulose-1,7-bisphoshatase (Cy-FBP/SBPase) is an important target enzyme for finding inhibitors to solve harmful algal bloom (HAB). In this study, as potential inhibitors of Cy-FBP/SBPase, a series of novel chromone-connecting benzohydrazone compounds (Novel N'-((4-oxo-4H-chromen-3-yl) methylene) benzohydrazide) were designed and synthesized. Their inhibitory activities against Cy-FBP/SBPase were further examined in vitro. Some of these compounds, such as f6-f8, f11, f12 and f16, exhibit higher inhibitory activities (IC50 = 11.2-16.1 mu M), especially, the compound f7 was identified as the most potent inhibitor with IC50 value of 11.2 mu M. The probable binding-mode of compound f7 was further analyzed carefully by molecular docking methods. These results indicate that compound f7 could be used as a lead compound for further optimization and might have potential to be developed as a new algicide. (C) 2013 Elsevier Ltd. All rights reserved.
Indolinone combinatorial libraries and related products and methods for the treatment of disease
申请人:Tang Cho Peng
公开号:US20050197382A1
公开(公告)日:2005-09-08
The present invention relates to organic molecules capable of modulating, regulating and/or inhibiting protein kinase signal transduction. Such compounds are useful for the treatment of diseases related to unregulated protein kinase signal transduction, including cell proliferative diseases such as cancer, atherosclerosis, arthritis and restenosis and metabolic diseases such as diabetes. The present invention features indolinone compounds that potently inhibit protein kinases and related products and methods. Inhibitors specific to the FLK protein kinase can be obtained by adding chemical substituents to the 3-[(indole-3-yl)methylene]-2-indolinone, in particular at the 1′ position of the indole ring. Indolinone compounds that specifically inhibit the FLK and platelet derived growth factor protein kinases can harbor a tetrahydroindole or cyclopentano-b-pyrrol moiety. Indolinone compounds that are modified with substituents, particularly at the 5 position of the oxindole ring, can effectively activate protein kinases. This invention also features novel hydrosoluble indolinone compounds that are tyrosine kinase inhibitors and related products and methods.
Compounds of formula (I) are useful for the treatment of disease responsive to modulation of CRTH2 receptor activity, such as asthma, rhinitis, allergic airway syndrome, and allergic rhinobronchitis, wherein A represents a carboxyl group —COON, or a carboxyl bioisostere; A
1
, is hydrogen or methyl; ring Ar
1
is an optionally substituted phenyl ring 5- or 6-membered monocyclic heteroaryl ring, in which AA
1
CHO— and L2 are linked to adjacent ring atoms; rings Are
2
, Ar
3
each independently represent a phenyl or 5- or 6-membered monocyclic heteroaryl ring, or a bicyclic ring system consisting of a 5- or 6-membered carbocyclic or heterocyclic ring which is benz-fused or fused to a 5- or 6-membered monocyclic heteroaryl ring, said ring or ring system being optionally substituted; t is 0 or 1; L2 and L3 are linker radicals as defined in the description.
Compounds of formula (I) are useful for the treatment of disease responsive to modulation of CRTH2 receptor activity, such as asthma, rhinitis, allergic airway syndrome, and allergic rhinobronchitis:
wherein A represents a carboxyl group —COOH, or a carboxyl bioisostere; A
1
is hydrogen or methyl; ring Ar
1
is an optionally substituted phenyl ring or 5- or 6-membered monocyclic heteroaryl ring, in which AA
1
CHO— and L2 are linked to adjacent ring atoms; rings Ar
2
, Ar
3
each independently represent a phenyl or 5- or 6-membered monocyclic heteroaryl ring, or a bicyclic ring system consisting of a 5- or 6-membered carbocyclic or heterocyclic ring which is benz-fused or fused to a 5- or 6-membered monocyclic heteroaryl ring, said ring or ring system being optionally substituted; t is 0 or 1; L2 and L3 are linker radicals as defined in the description.
4-Bromo-2-[1-(2,6-dichlorophenyl)-1H-pyrazole-4-carbonyl]phenoxyl acetic acid is useful for the treatment of disease responsive to modulation of CRTH2 receptor activity, such as asthma, rhinitis, allergic airway syndrome, and allergic rhinobronchitis.
[EN] SPECTRAL IMAGING OF PHOTOLUMINESCENT MATERIALS<br/>[FR] IMAGERIE SPECTRALE DE MATÉRIAUX PHOTOLUMINESCENTS
申请人:MASSACHUSETTS INST TECHNOLOGY
公开号:WO2011072228A1
公开(公告)日:2011-06-16
A system for infrared spectroscopic imaging comprises a light source (10) for illuminating an object to induce luminescent emission in the infrared wavelength range, an optical separator (40), for example a dichroic mirror or a beam splitter in combination with spectral filters, for spatially separating the emission into a first spectral image and a second spectral image, the first spectral image being formed from a shorter wavelength range of light than the second spectral image, and a detector (60) for detecting the first spectral image (70) and the second spectral image (75). The system is used for detecting fluorescence from nanostructures, such as carbon nanotubes, single walled nanotubes SWNT, or quantum dots, wherein a change in fluorescence intensity and/or wavelength is induced by an interaction of an analyte with said nanostructure. The nanostructure may be provided in a biological fluid or within a living or non-living cell.