175153-75-0Relevant academic research and scientific papers
Structure-anti-MRSA activity relationship of macrocyclic bis(bibenzyl) derivatives
Sawada, Hiromi,Onoda, Kenji,Morita, Daichi,Ishitsubo, Erika,Matsuno, Kenji,Tokiwa, Hiroaki,Kuroda, Teruo,Miyachi, Hiroyuki
, p. 6563 - 6568 (2013)
We synthesized a series of macrocyclic bis(bibenzyl) derivatives, including riccardin-, isoplagiochin- and marchantin-class structures, and evaluated their antibacterial activity towards methicillin-resistant Staphylococcus aureus (anti-MRSA activity). Th
Minimum structural requirements for cell membrane leakage-mediated anti-MRSA activity of macrocyclic bis(bibenzyl)s
Fujii, Kana,Morita, Daichi,Onoda, Kenji,Kuroda, Teruo,Miyachi, Hiroyuki
, p. 2324 - 2327 (2016)
Macrocyclic bis(bibenzyl)-type phenolic natural products, found exclusively in bryophytes, exhibit potent antibacterial activity towards methicillin-resistant Staphylococcus aureus (anti-MRSA activity). Here, in order to identify the minimum essential structure for cell membrane leakage-mediated anti-MRSA activity of these compounds, we synthesized acyclic fragment structures and evaluated their anti-MRSA activity. The activities of all of the acyclic fragments tested exhibited similar characteristics to those of the macrocycles, i.e., anti-MRSA bactericidal activity, an enhancing effect on influx and efflux of ethidium bromide (EtBr: fluorescent DNA-binder) in Staphylococcus aureus cells, and bactericidal activity towards a Staphylococcus aureus strain resistant to 2-phenoxyphenol (4). The latter result suggests that they have a different mechanism of action from 4, which is a FabI inhibitor previously proposed to be the minimum active fragment of riccardin-type macrocycles. Thus, cyclic structure is not a necessary condition for cell membrane leakage-mediated anti-MRSA activity of macrocyclic bis(bibenzyl)s.
Palladium-Catalyzed Cyclobutanation of Aryl Sulfonates through both C-O and C-H Cleavage
Zhang, Liangwei,Liu, Long,Huang, Tianzeng,Dong, Qizhi,Chen, Tieqiao,Chen, Tieqiao
, p. 2189 - 2196 (2020/06/05)
A palladium-catalyzed cyclobutanation of aryl sulfonates with strained alkenes has been developed. The methodology is featured to achieve the cleavage of both C-O and C-H bonds of phenol derivatives in one pot. Under the reaction conditions, in addition t
Palladium-Catalyzed Formal [4+2] Cycloaddition of Benzoic and Acrylic Acids with 1,3-Dienes via C—H Bond Activation: Efficient Access to 3,4-Dihydroisocoumarin and 5,6-Dihydrocoumalins
Sun, Youwen,Zhang, Guozhu
supporting information, p. 708 - 711 (2018/06/06)
We report a palladium-catalyzed formal intermolecular [4+2] cycloaddition of benzoic and acrylic acids with 1,3-dienes including the stock chemicals 1,3-butadiene and isoprene leading to synthetically useful 3,4-dihydroisocoumarins and 5,6-dihydrocoumalins. Stepwise C—H bond cleavage and annulation are likely involved in the reaction pathway. The synthetic potential of the methodology was demonstrated by two short derivatizations and total synthesis of natural product Clausamine B.
Discovery of a 1-Methyl-3,4-dihydronaphthalene-Based Sphingosine-1-Phosphate (S1P) Receptor Agonist Ceralifimod (ONO-4641). A S1P1 and S1P5 Selective Agonist for the Treatment of Autoimmune Diseases
Kurata, Haruto,Kusumi, Kensuke,Otsuki, Kazuhiro,Suzuki, Ryo,Kurono, Masakuni,Komiya, Takaki,Hagiya, Hiroshi,Mizuno, Hirotaka,Shioya, Hiroki,Ono, Takeji,Takada, Yuka,Maeda, Tatsuo,Matsunaga, Norikazu,Kondo, Tetsu,Tominaga, Sachiko,Nunoya, Ken-Ici,Kiyoshi, Hidekazu,Komeno, Masaharu,Nakade, Shinji,Habashita, Hiromu
, p. 9508 - 9530 (2017/12/26)
The discovery of 1-({6-[(2-methoxy-4-propylbenzyl)oxy]-1-methyl-3,4-dihydronaphthalen-2-yl}methyl)azetidine-3-carboxylic acid 13n (ceralifimod, ONO-4641), a sphingosine-1-phosphate (S1P) receptor agonist selective for S1P1 and S1P5, is described. While it has been revealed that the modulation of the S1P1 receptor is an effective way to treat autoimmune diseases such as relapsing-remitting multiple sclerosis (RRMS), it was also reported that activation of the S1P3 receptor is implicated in some undesirable effects. We carried out a structure-activity relationship (SAR) study of hit compound 6 with an amino acid moiety in the hydrophilic head region. Following identification of a lead compound with a dihydronaphthalene central core by inducing conformational constraint, optimization of the lipophilic tail region led to the discovery of 13n as a clinical candidate that exhibited >30 000-fold selectivity for S1P1 over S1P3 and was potent in a peripheral lymphocyte lowering (PLL) test in mice (ED50 = 0.029 mg/kg, 24 h after oral dosing).
Co-existence of α-glucosidase-inhibitory and liver X receptor-regulatory activities and their separation by structural development
Dodo, Kosuke,Aoyama, Atsushi,Noguchi-Yachide, Tomomi,Makishima, Makoto,Miyachi, Hiroyuki,Hashimoto, Yuichi
, p. 4272 - 4285 (2008/09/21)
Liver X receptors (LXR), which were originally reported as oxysterol-activated nuclear receptors, were recently found to recognize glucose as a physiological ligand. On this basis, we have already developed novel LXR antagonists based upon α-glucosidase i
Mechanistic study of a Pd/C-catalyzed reduction of aryl sulfonates using the Mg-MeOH-NH4OAc system
Mori, Akinori,Mizusaki, Tomoteru,Ikawa, Takashi,Maegawa, Tomohiro,Monguchi, Yasunari,Sajiki, Hironao
, p. 1432 - 1441 (2008/02/04)
A method for the deoxygenation of phenolic hydroxy groups via aryl triflates or mesylates has been established by using a combination of Pd/ C-Mg-MeOH. The addition of NH4OAc to the system markedly accelerated the reaction rate and expanded the scope of the reaction. Mechanistic studies suggested that a single-electron transfer process from the Pd0 center to the benzene ring is involved in the reduction of aryl sulfonates and that NH4OAc works as a solubilization re agent of the Mg salt and as an accelerator of the electron transfer, thus enhancing the reaction process. Our method was also applicable to the regioselective deuteration of benzene derivatives with CH3OD as the solvent and deuterium source: the original hydroxy group could be efficiently replaced with a deuterium atom.
Catalytic direct arylation with aryl chlorides, bromides, and iodides: Intramolecular studies leading to new intermolecular reactions
Campeau, Louis-Charles,Parisien, Mathieu,Jean, Annie,Fagnou, Keith
, p. 581 - 590 (2007/10/03)
A catalyst for the intramolecular direct arylation of a broad range of simple and heterocyclic arenes with aryl iodides, bromides, and chlorides has been developed. These reactions occur in excellent yield and are highly selective. Studies with aryl iodides substrates revealed that catalyst poisoning occurs due to the accumulation of iodide in the reaction media. This can be overcome by the addition of silver salts which also permits these reactions to occur at lower temperature. The utility of the methodology is illustrated by a rapid synthesis of a carbazole natural product and by the synthesis of sterically encumbered tetra-ortho-substituted biaryls via ring-opening reactions of the direct arylation products. Mechanistic investigations have provided insight into the catalyst's mode of action and show the presence of a kinetically significant C-H bond cleavage in palladium-catalyzed direct arylation of simple arenes. Knowledge garnered from these studies has led to the development of new intermolecular arylation reactions with previously inaccessible arenes, opening the door for the development of other new direct arylation processes.
AMIDE COMPOUNDS AS ION CHANNEL LIGANDS AND USES THEREOF
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Page/Page column 42-43, (2008/06/13)
Compounds are disclosed that have a formula represented by the following: The compounds may be prepared as pharmaceutical compositions, and may be used for the prevention and treatment of a variety of conditions in mammals including humans, including by way of non-limiting example, pain, inflammation, traumatic injury, and others.
Tetrahydroquinoline derivatives as antithrombotic agents
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Page 70, (2010/02/05)
This invention relates generally to tetracyclic tetrahydroquinoline compounds, and analogues thereof, and pharmaceutically acceptable salt forms thereof, which are selective inhibitors of serine protease enzymes, especially factor VIIa; pharmaceutical compositions containing the same; and methods of using the same as anticoagulant agents for modulation of the coagulation cascade.
