- Galantamine-curcumin hybrids as dual-site binding acetylcholinesterase inhibitors
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Galantamine (GAL) and curcumin (CU) are alkaloids used to improve symptomatically neurodegenerative conditions like Alzheimer's disease (AD). GAL acts mainly as an inhibitor of the enzyme acetylcholinesterase (AChE). CU binds to amyloid-beta (Aβ) oligomers and inhibits the formation of Aβ plaques. Here, we combine GAL core with CU fragments and design a combinatorial library of GAL-CU hybrids as dual-site binding AChE inhibitors. The designed hybrids are screened for optimal ADME properties and BBB permeability and docked on AChE. The 14 best performing compounds are synthesized and tested in vitro for neurotoxicity and anti-AChE activity. Five of them are less toxic than GAL and CU and show activities between 41 and 186 times higher than GAL.
- Atanasova, Mariyana,Atanasova, Teodora,Doytchinova, Irini,Ivanov, Stefan,Konstantinov, Spiro,Lukarski, Atanas,Philipova, Irena,Stavrakov, Georgi,Zheleva, Dimitrina,Zhivkova, Zvetanka D.
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supporting information
(2020/08/06)
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- PYRIDONE DERIVATIVES AND THEIR USE AS KINASE INHIBITORS
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Disclosed in the present application is a compound of formula (I) as defined herein as well as a pharmaceutical composition comprising said compound. Further disclosed in the present application is the use of such pharmaceutical compositions for treating diseases, namely inter alia for use in the treatment of cancer, metabolic, inflammatory, autoimmune and viral diseases. The compounds disclosed herein are inhibitors of MNK1 and/or MNK2 kinases.
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Page/Page column 191; 192
(2017/05/10)
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- Aromatic PCN palladium pincer complexes. Probing the hemilability through reactions with nucleophiles
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A series of unsymmetrical PCN pincer ligands (1-(3-((di-tert-butylphosphino)methyl)phenyl)-N,N-dialkylmethanamine) were cyclometalated with palladium to generate a series of new PCN supported Pd(II) chloro complexes, (PCN)PdCl (4-6), where alkyl = methyl, ethyl, and n-propyl, which were fully characterized by NMR spectroscopy and X-ray crystallography. The N,N-dimethyl complex 4 reacts with methyl lithium to give the corresponding methyl and dimethyl complexes (PCN)PdMe (12) and Li[(PCN)PdMe2] (13), which could not be isolated but were characterized in solution. The substitution reactions of (PCN)PdCl (4-6) with iodide to form the corresponding iodo complexes (PCN)PdI (7-9) were investigated by use of UV-vis stopped-flow spectrophotometry. The experiments were performed in methanol over a temperature range from 293 to 325 K. The reactions are reversible and were shown to proceed exclusively via the solvento complex in two reversible consecutive steps. Activation parameters for both the forward and reverse reactions were determined, and they, together with reactivity trends, support an associative pathway. No displacement of the nitrogen donor was detected, and overall this points to a limited hemilability of the ligands on palladium.
- Fleckhaus, André,Mousa, Abdelrazek H.,Lawal, Nasir Sallau,Kazemifar, Nitsa Kiriakidou,Wendt, Ola F.
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p. 1627 - 1634
(2015/05/20)
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- METHOD OF CONTROLLING LACTATE PRODUCTION WITH PIPERDINE-DIONE DERIVATIVES
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The invention provides novel compounds having the general formula: and tautomers and pharmaceutically acceptable salts thereof, wherein A1, A2, A3, A4, R1, R4, R5, R6, R7 and R8 are as defined herein, compositions including the compounds and methods of using the compounds.
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Page/Page column 94
(2015/11/10)
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- PIPERIDINE-DIONE DERIVATIVES
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The invention provides novel compounds having the general formula (I) and tautomers and pharmaceutically acceptable salts thereof, wherein A1, A2, A3, A4, R1, R4, R5, R6, R7 and R8 are as defined herein, compositions including the compounds and methods of using the compounds.
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Page/Page column 106
(2015/11/10)
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- AROMATIC RING COMPOUND
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Provided is an aromatic ring compound having a GPR40 agonist activity. A compound represented by the formula (I): wherein each symbol is as described in the DESCRIPTION, or a salt thereof has a GPR40 agonist activity, and is useful as an agent for the prophylaxis or treatment of diabetes and the like.
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Paragraph 0488
(2015/01/18)
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- Discovery of orally available 8-aza-5-thiaProstaglandin E1 analogs as highly selective EP4 agonists
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Analogs 8-aza-16-aryl prostaglandin E1 (PGE1) and 8-aza-5-thia-16-arylPGE1 were synthesized and evaluated with respect to their subtype receptor affinity and EP4 agonist activity for the purposes of identifying sub-type- selective EP
- Kambe, Tohru,Maruyama, Toru,Nakano, Masayuki,Yamaura, Yoshiyuki,Shono, Tomoyuki,Seki, Akiteru,Sakata, Kiyoto,Maruyama, Takayuki,Nakai, Hisao,Toda, Masaaki
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experimental part
p. 1523 - 1534
(2012/01/13)
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- Nucleophilic de-coordination and electrophilic regeneration of "hemilabile" pincer-type complexes: Formation of anionic dialkyl, diaryl, and dihydride PtII complexes bearing no stabilizing π-acceptors
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Novel anionic dialkyl, diaryl, and dihydride platinum(II) complexes based on the new πlong-armπ hemilabile PCN-type ligand C6H 4[CH2P(tBu)2](CH2) 2N(CH3)2 with the general formula Li + [Pt(PCN)(R)2]- (R = Me (4), Ph (6) and H (9)) were prepared by reaction of [Pt(PCN)(R)] complexes (obtained from the corresponding chlorides) with an equivalent of RLi, as a result of the opening of the chelate ring. Alkylating agents based on other metals produce less stable products. These anionic d8 complexes are thermally stable although they bear no stabilizing π acceptors. They were characterized by 1H, 31P{1H}, 13C, and 7Li NMR spectroscopy; complex 9 was also characterized by single crystal X-ray crystallography, showing that the Li + ion is coordinated to the nitrogen atom of the open amine arm and to the hydride ligand (trans to the P atom) of a neighboring molecule (H-Li = 2.15 A), resulting in a dimeric structure. Complexes 4 and 9 exhibit high nucleophilic reactivity, upon which the pincer complex is regenerated. Reaction of 4 with water, methyl iodide, and iodobenzene resulted in the neutral complex [Pt(PCN)(CH3)] (3) and methane, ethane, or toluene, respectively. Labeling studies indicate that the reaction proceeds by direct electrophilic attack on the metal center, rather than attack on the alkyl ligand. The anionic dihydride complex 9 reacted with water and methyl iodide to yield [Pt(PCN)(H)] (8) and H2 or methane, respectively.
- Poverenov, Elena,Gandelman, Mark,Shimon, Linda J. W.,Rozenberg, Haim,Ben-David, Yehoshoa,Milstein, David
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p. 4673 - 4684
(2007/10/03)
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- BENZYLIDENE RHODANINES
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This invention provides novel benzylidene rhodanines which are useful as agents in treating or preventing conditions associated with . beta.-amyloid peptide. This invention further provides methods of treating or preventing Alzheimer's Disease which comprises administering to a mammal in need thereof an effective amount of one or more of the benzylidene rhodanines of the present invention.
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- Esters of monic acid A useful as antibacterial and antimycoplasmal agents
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Compounds of formula (II): STR1 wherein R is C1-20 alkyl; C3-8 cycloalkyl; C3-20 alkenyl; aralkyl; cycloalkylalkyl; heterocyclyl or heterocyclylalkyl; each being substituted with formyl; STR2 have activity against human and veterinary bacteria and mycoplasma. They may be produced by conventional methods and are used in conventional formulations.
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