83948-53-2Relevant academic research and scientific papers
PHTHALOCYANINE DYE COMPOUNDS, CONJUGATES AND METHODS OF USE THEREOF
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Paragraph 000174-000175, (2021/10/15)
Disclosed herein are phthalocyanine dyes, and conjugates thereof, useful as fluorescent reporters for bioassays, for optical imaging and as therapeutic conjugates as the photosensitizing agents in light-based therapies including photoimmuno therapy (PIT). Certain phthalocyanine dyes disclosed herein are water soluble, and possess photophysical and photochemical profiles useful for use in imaging or therapy.
Graphene Oxide Cellular Delivery of Hydrophilic Small Molecules
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Paragraph 0069; 0071, (2017/04/04)
Unmodified graphene oxide conjugated with hydrophilic small molecules for cellular delivery.
Effect of spermine-derived AGEs on oxidative stress and polyamine metabolism
Tsutsui, Ayumi,Pradipta, Ambara R.,Kitazume, Shinobu,Taniguchi, Naoyuki,Tanaka, Katsunori
supporting information, p. 6720 - 6724 (2017/08/22)
Non-enzymatic glycation between proteins and carbohydrates, such as advanced glycation end products (AGEs), are naturally occurring compounds implicated in aging and numerous degenerative diseases. Methyl glyoxal (MG), which is an intermediate of the AGE biosynthetic pathway, is known to react with primary amines of proteins to create a wide range of AGE modifications, such as carboxyethyl lysine (CEL) and methylglyoxal-derived lysine dimer (MOLD). As a means to investigate and probe the ROS production pathways of AGEs, low molecular weight compounds carboxyethyl spermine (CES) and methylglyoxal-derived spermine dimer (MOSD) were synthesized, which replace lysine with another highly nucleophilic biological amine, spermine (SPM). Contrary to expectations, results show CES- and MOSD-induced oxidative stress proceeds through different pathways. As such, we have developed useful probes that can be used to better understand and investigate pathways related to acrolein-based oxidative stress and/or polyamine metabolic pathways.
Light-mediated deoxygenation of alcohols with a dimeric gold catalyst
McCallum, Terry,Slavko, Ekaterina,Morin, Mathieu,Barriault, Louis
supporting information, p. 81 - 85 (2015/02/18)
A new protocol for the reductive deoxygenation of primary alcohols was explored. This photo-mediated method combines a novel approach to bromination of alcohols merged with the powerful reducing capability of [Au2(dppm)2]Cl2 [dppm = 1,1-bis(diphenylphosphino)methane] as a photoredox catalyst. The highly efficient methods discussed are marked by the use of UVA light-emitting diodes, which have significantly reduced reaction times and lowered setup cost.
COMPOUNDS FOR THE REDUCTION OF BETA-AMYLOID PRODUCTION
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Page/Page column 45, (2012/02/02)
Compounds of the formula (I) are provided, including pharmaceutically acceptable salts thereof: which modulate β-amyloid peptide (β-AP) production, and are useful in the treatment of Alzheimer's Disease and other conditions affected by -amyloid peptide (β-AP) production.
Visible-light-mediated conversion of alcohols to halides
Dai, Chunhui,Narayanam, Jagan M.R.,Stephenson, Corey R.J.
experimental part, p. 140 - 145 (2012/02/06)
The development of new means of activating molecules and bonds for chemical reactions is a fundamental objective for chemists. In this regard, visible-light photoredox catalysis has emerged as a powerful technique for chemoselective activation of chemical bonds under mild reaction conditions. Here, we report a visible-light-mediated photocatalytic alcohol activation, which we use to convert alcohols to the corresponding bromides and iodides in good yields, with exceptional functional group tolerance. In this fundamentally useful reaction, the design and operation of the process is simple, the reaction is highly efficient, and the formation of stoichiometric waste products is minimized.
Module assembly for protein-surface recognition: Geranylgeranyltransferase I bivalent inhibitors for simultaneous targeting of interior and exterior protein surfaces
Machida, Shinnosuke,Usuba, Kakeru,Blaskovich, Michelle A.,Yano, Akiko,Harada, Kazuo,Sebti, Said M.,Kato, Nobuo,Ohkanda, Junko
supporting information; experimental part, p. 1392 - 1401 (2009/04/07)
Synthetic chemical probes designed to simultaneously targeting multiple sites of protein surfaces are of interest owing to their potential application as site specific modulators of protein-protein interactions. A new approach toward bivalent inhibitors of mammalian type I geranylgeranyltransferase (GGTase I) based on module assembly for simultaneous recognition of both interior and exterior protein surfaces is reported. The inhibitors synthesized in this study consist of two modules linked by an alkyl spacer; one is the tetrapeptide CVIL module for binding to the interior protein surface (active pocket) and the other is a 3,4,5-alkoxy substituted benzoyl motif that contains three aminoalkyl groups designed to bind to the negatively charged protein exterior surface near the active site. The compounds were screened by two distinct enzyme inhibition assays based on fluorescence spectroscopy and incorporation of a [ 3H]-labeled prenyl group onto a protein substrate. The bivalent inhibitors block GGTase I enzymatic activity with Ki values in the submicromolar range and are approximately one order of magnitude and more than 150 times more effective than the tetrapeptide CVIL and the methyl benzoate derivatives, respectively. The bivalent compounds 6 and 8 were shown to be competitive inhibitors, suggesting that the CVIL module anchors the whole molecule to the GGTase I active site and delivers the other module to the targeting protein surface. Thus, our module-assembly approach resulted in simultaneous multiple-site recognition, and as a consequence, synergetic inhibition of GGTase I activity, thereby providing a new approach in designing protein-surface-directed inhibitors for targeting protein-protein interactions.
N-Boc ethyl oxamate: A new nitrogen nucleophile for use in Mitsunobu reactions
Berree, Fabienne,Michelot, Gwendal,Le Corre, Maurice
, p. 8275 - 8276 (2007/10/03)
N-Boc ethyl oxamate can be directly coupled with primary and secondary alcohols under Mitsunobu conditions to afford various N-Boc mines after mild deprotection.
Molecular diversity of novel amino acid based dendrimers
Mulders, Suzanne J. E.,Brouwer, Arwin J.,Liskamp, Rob M. J.
, p. 3085 - 3088 (2007/10/03)
We have expanded the recently introduced methodology for the preparation of a novel amino acid based dendrimer in order to be able to synthesize a diversity of dendrimers. For this purpose different hydroxybenzoic acids and amino alcohols were used to prepare the required monomers, necessary for construction of the respective dendrimers.
