19489-16-8Relevant academic research and scientific papers
Preparation method of carboxylic acid compound
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Paragraph 0113; 0267-0269, (2017/08/29)
The invention provides a preparation method of a carboxylic acid compound. The preparation method comprises the following step of taking a lactone component to react with hydrogen in the presence of a compound catalyst to obtain the carboxylic acid compound. The compound catalyst comprises a hydrogenation catalyst and Lewis acid. In the presence of the compound catalyst comprising the hydrogenation catalyst and the Lewis acid, the lactone component is subjected to hydrogenation ring-opening reaction to obtain the carboxylic acid compound. The preparation method has the advantages of moderate reaction conditions and high yield; compared with a traditional method, less byproducts are generated, green and chemical requirements are met and the industrial value is better.
QUINAZOLIN-4(3H)-ONE-TYPE PIPERIDINE COMPOUNDS AND USES THEREOF
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, (2014/07/21)
The present disclosure relates to Quinazolin-4(3H)-one-Type Piperidine Compounds, such as those of Formule (I) and the pharmaceutically acceptable salts and solvates thereof, wherein R1, R2, R3, Q, Y1, Z, A, B,
SUBSTITUTED BENZIMIDAZOLE-TYPE PIPERIDINE COMPOUNDS AND USES THEREOF
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, (2014/07/08)
The disclosure relates to Substituted Benzimidazole-Type Piperidine Compounds of Formula (I): and pharmaceutically acceptable salts or solvates thereof, e.g., a pharmaceutically acceptable salt or solvate, wherein R1, R2, R3, Qa, W, U, A, B, Z, a, and the dashed lines are as defined herein, compositions comprising an effective amount of a Substituted Benzimidazole-Type Piperidine Compound, and methods to treat or prevent a condition, such as pain, comprising administering to an animal in need thereof an effective amount of a Substituted Benzimidazole-Type Piperidine Compound.
OXIME-SUBSTITUTED-QUINOXALINE-TYPE PIPERIDINE COMPOUNDS AND USES THEREOF
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, (2014/07/08)
The present disclosure relates to Oxime-Substituted Quinoxaline-Type Piperidine Compounds, such as those of Formula (I): and the pharmaceutically acceptable salts and solvates thereof, wherein R1, R2, R3, R4, R
CYCLIC UREA- OR LACTAM-SUBSTITUTED QUINOXALINE-TYPE PIPERIDINE COMPOUNDS AND THE USES THEREOF
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Page/Page column 265-267, (2014/02/16)
The disclosure relates to Cyclic Urea- or Lactam-Substituted Quinoxaline-Type Piperidine Compounds of Formula (I): and pharmaceutically acceptable derivatives thereof wherein R1, R2, Qa, Y1, Z, A, B, Qx, E, G, J, M, U, W, and a are as defined herein, compositions comprising an effective amount of a Cyclic Urea- or Lactam-Substituted Quinoxal ine-Type Piperidine Compound, and methods to treat or prevent a condition, such as pain, comprising administering to an animal in need thereof an effective amount of a Cyclic Urea- or Lactam-Substituted Quinoxaline-Type Piperidine Compound.
AZETIDINE-SUBSTITUTED QUINOXALINE-TYPE PIPERIDINE COMPOUNDS AND USES THEREOF
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, (2013/06/27)
The disclosure relates to Azetidine-Substituted Quinoxaline-Type Piperidine Compounds of Formula (I): and pharmaceutically acceptable derivatives thereof wherein the R1, R2, R3, Q, Y1, Z, A, B, a, and b are as defined herein, compositions comprising an effective amount of an Azetidine-Substituted Quinoxaline-Type Piperidine Compound, and methods to treat or prevent a condition, such as pain, comprising administering to an animal in need thereof an effective amount of an Azetidine-Substituted Quinoxaline-Type Piperidine Compound.
PHOSPHORUS-SUBSTITUTED QUINOXALINE-TYPE PIPERIDINE COMPOUNDS AND USES THEREOF
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Page/Page column 201-202, (2012/07/13)
The disclosure relates to Phosphorus-Substituted Quinoxaline-Type Piperidine Compounds of Formula (I), and pharmaceutically acceptable derivatives thereof wherein the dashed line, A, B, Q, R1, R2, R3, R4, Y1, Z, and a are as defined herein, compositions comprising an effective amount of a Phosphorus-Substituted Quinoxaline-Type Piperidine Compound, and methods to treat or prevent a condition, such as pain, comprising administering to an animal in need thereof an effective amount of a Phosphorus- Substituted Quinoxaline-Type Piperidine Compound.
Comparison of the reactivity of antimalarial 1,2,4,5-tetraoxanes with 1,2,4-trioxolanes in the presence of ferrous iron salts, heme, and ferrous iron salts/phosphatidylcholine
Bousejra-El Garah, Fatima,Wong, Michael He-Long,Amewu, Richard K.,Muangnoicharoen, Sant,Maggs, James L.,Stigliani, Jean-Luc,Park, B. Kevin,Chadwick, James,Ward, Stephen A.,O'Neill, Paul M.
supporting information; scheme or table, p. 6443 - 6455 (2011/12/04)
Dispiro-1,2,4,5-tetraoxanes and 1,2,4-trioxolanes represent attractive classes of synthetic antimalarial peroxides due to their structural simplicity, good stability, and impressive antimalarial activity. We investigated the reactivity of a series of potent amide functionalized tetraoxanes with Fe(II)gluconate, FeSO4, FeSO4/TEMPO, FeSO 4/phosphatidylcholine, and heme to gain knowledge of their potential mechanism of bioactivation and to compare the results with the corresponding 1,2,4-trioxolanes. Spin-trapping experiments demonstrate that Fe(II)-mediated peroxide activation of tetraoxanes produces primary and secondary C-radical intermediates. Reaction of tetraoxanes and trioxolanes with phosphatidylcholine, a predominant unsaturated lipid present in the parasite digestive vacuole membrane, under Fenton reaction conditions showed that both endoperoxides share a common reactivity in terms of phospholipid oxidation that differs with that of artemisinin. Significantly, when tetraoxanes undergo bioactivation in the presence of heme, only the secondary C-centered radical is observed, which smoothly produces regioisomeric drug derived-heme adducts. The ability of these tetraoxanes to alkylate the porphyrin ring was also confirmed with Fe IITPP and MnIITPP, and docking studies were performed to rationalize the regioselectivity observed in the alkylation process. The efficient process of heme alkylation and extensive lipid peroxidation observed here may play a role in the mechanism of action of these two important classes of synthetic endoperoxide antimalarial.
SUBSTITUTED-QUINOXALINE-TYPE BRIDGED-PIPERIDINE COMPOUNDS AND THE USES THEREOF
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Page/Page column 51; 80-81, (2010/04/03)
The invention relates to Substituted-Quinoxaline-Type Bridged-Piperidine Compounds, compositions comprising an effective amount of a Substituted-Quinoxaline- Type Bridged-Piperidine Compound and methods to treat or prevent a condition, such as pain, compr
