- BENZIMIDAZOLE-LINKED INDOLE COMPOUND ACTING AS NOVEL DIVALENT IAP ANTAGONIST
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The present invention discloses a benzimidazole-linked indole compound acting as novel divalent IAP antagonist, specifically disclosing the compound shown in fomulas (I) or a pharmaceutically acceptable salt thereof.
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Paragraph 0168; 0169
(2019/03/14)
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- Diastereoselective synthesis of 3-fluoro-2-substituted piperidines and pyrrolidines
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A facile procedure for synthesis of trans-3-fluoro-2-substituted piperidines by utilizing electrophilic fluorination of cyclic enamines and Lewis acid mediated nucleophilic substitution has been developed. Also, optically active trans-2-allyl-3-fluorinate
- Gichuhi, Paul N.,Kuriyama, Masami,Onomura, Osamu
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p. 331 - 346
(2014/01/17)
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- Conformationally stabilized catalysts by fluorine insertion: Tool for enantioselectivity improvement
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F rigid cats: The power of conformationally stabilized catalysts is demonstrated. By taking appropriate advantage of fluorine insertion (see scheme), purely conformational catalyst design led to a notable improvement in enantioselectivities from around 70% to 91-98.5% ee. The other advantage of this approach is the better understanding of the origin of the stereoselectivity in the given catalytic system. Copyright
- Quintard, Adrien,Langlois, Jean-Baptiste,Emery, Daniel,Mareda, Jiri,Guenee, Laure,Alexakis, Alexandre
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supporting information; experimental part
p. 13433 - 13437
(2012/01/05)
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- 4-fluoropyrrolidine-2-carbonyl fluorides: Useful synthons and their facile preparation with 4-tert-butyl-2,6-dimethylphenylsulfur trifluoride
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4-Fluoropyrrolidine derivatives are useful in medicinal chemistry applications such as dipeptidyl peptidase IV inhibitors. As attractive synthons for these, N-protected (2S,4S)-4-fluoropyrrolidine-2-carbonyl fluorides were synthesized in high yield by double fluorination of N-protected (2S,4R)-4-hydroxyproline with 4-tert-butyl-2,6-dimethylphenylsulfur trifluoride (Fluolead). The 4-fluoropyrrolidine-2-carbonyl fluorides were converted to useful intermediates such as 4-fluoropyrrolidine-2-carboxamides, -N-methoxy-N-methylcarboxamide (Weinreb amide), -carboxylate methyl esters, and -carbonitriles in excellent yields. The crystalline N-Fmoc-cis-4- fluoropyrrolidine-2-carbonyl fluoride 2a is a particularly useful synthon due to its high yield of preparation and easy isolation as an enantiomerically pure compound by crystallization. Thus, the methodology using the synthons prepared by the stereospecific double fluorination has enabled a significant decrease in the synthetic steps needed for the preparation of the 4-fluoropyrrolidine derivatives useful for medicinal applications.
- Singh, Rajendra P.,Umemoto, Teruo
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p. 3113 - 3121
(2011/06/21)
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- NOVEL 4-FLUOROPYRROLIDINE-2-CARBONYL FLUORIDE COMPOUNDS AND THEIR PREPARATIVE METHODS
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Novel 4-fluoropyrrolidine-2-carbonyl fluoride compounds as useful fluorinated intermediates are disclosed. Their preparative methods are also disclosed. Useful applications of the 4-fluoropyrrolidine-2-carbonyl fluorides are shown.
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Page/Page column 33
(2010/08/04)
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- Discovery and synthesis of HIV integrase inhibitors: Development of potent and orally bioavailable N-methyl pyrimidones
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The human immunodeficiency virus type-1 (HIV-1) encodes three enzymes essential for viral replication: a reverse transcriptase, a protease, and an integrase. The latter is responsible for the integration of the viral genome into the human genome and, therefore, represents an attractive target for chemotherapeutic intervention against AIDS. A drug based on this mechanism has not yet been approved. Benzyl-dihydroxypyrimidine-carboxamides were discovered in our laboratories as a novel and metabolically stable class of agents that exhibits potent inhibition of the HIV integrase strand transfer step. Further efforts led to very potent compounds based on the structurally related N-Me pyrimidone scaffold. One of the more interesting compounds in this series is the 2-N-Me-morpholino derivative 27a, which shows a CIC95 of 65 nM in the cell in the presence of serum. The compound has favorable pharmacokinetic properties in three preclinical species and shows no liabilities in several counterscreening assays.
- Gardelli, Cristina,Nizi, Emanuela,Muraglia, Ester,Crescenzi, Benedetta,Ferrara, Marco,Orvieto, Federica,Pace, Paola,Pescatore, Giovanna,Poma, Marco,Ferreira, Maria Del Rosario Rico,Scarpelli, Rita,Homnick, Carl F.,Ikemoto, Norihiro,Alfieri, Anna,Verdirame, Maria,Bonelli, Fabio,Paz, Odalys Gonzalez,Taliani, Marina,Monteagudo, Edith,Pesci, Silvia,Laufer, Ralph,Felock, Peter,Stillmock, Kara A.,Hazuda, Daria,Rowley, Michael,Summa, Vincenzo
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p. 4953 - 4975
(2008/03/14)
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- PROCESS FOR PRODUCTION OF CIS-4-FLUORO-L-PROLINE DERIVATIVES
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The present invention provides a safer method for production of a cis-4-fluoro-L-proline derivative under milder conditions and in good yield to give a product of high purity on an industrial scale at low cost. Namely, the present invention provides a method for producing a cis-4-fluoro-L-proline derivative, which comprises reacting a trans-4-hydroxy-L-proline derivative of the following Formula [I]: (wherein R1 represents a protecting group for an α-amino group, and R2 represents a protecting group for a carboxyl group) with N,N-diethyl-N-(1,1,2,3,3,3-hexafluoropropyl)amine in the presence of a hydrogen fluoride-scavenger.
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Page/Page column 5-6
(2008/06/13)
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- VLA-4 INHIBITOR
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A compound which selectively inhibits bonding between a ligand and α4β1 integrin (VLA-4); a process for producing the compound; and a medicine containing the compound. The compound is one represented by, e.g., the formula (I) or a salt thereof. Also provided is a preventive and/or therapeutic agent which contains the compound or salt as a major component and is effective against diseases attributable to cell adhesion, such as, e.g., inflammatory reaction, autoimmune disease, cancer metastasis, bronchial asthma, nasal obstruction, diabetes, arthritis, psoriasis, multiple sclerosis, inflammatory intestinal disease, and rejection reaction in transplantation. (In the formula, Y1 represents arylene, etc.; V1 represents aryl, etc.; and R11 to R14 each represents H, OH, halogeno, etc.)
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Page/Page column 68
(2010/02/15)
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- Inhibitors of tripeptidyl peptidase II. 3. Derivation of butabindide by successive structure optimizations leading to a potential general approach to designing exopeptidase inhibitors
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The cholecystokinin-8 (CCK-8)-inactivating peptidase is a serine peptidase that has been shown to be a membrane-bound isoform of tripeptidyl peptidase II (EC 3.4.14.10). It cleaves the neurotransmitter CCK-8 sulfate at the Met-Gly bond to give Asp-Tyr(SO
- Ganellin, C. Robin,Bishop, Paul B.,Bambal, Ramesh B.,Chan, Suzanne M. T.,Leblond, Bertrand,Moore, Andrew N. J.,Zhao, Lihua,Bourgeat, Pierre,Rose, Christiane,Vargas, Froylan,Schwartz, Jean-Charles
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p. 7333 - 7342
(2007/10/03)
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- Synthesis and Pharmacological Activity of Angiotensin Converting Enzyme Inhibitors: N-(Mercaptoacyl)-4-substituted-(S)-prolines
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The synthesis of a series of N-(mercaptoacyl)-4-substituted-(S)-prolines (2 and 3) is described.These compounds were evaluated in vitro for inhibition of angiotensin-converting enzyme (ACE), and selected compounds were evaluated in vivo for ACE inhibition.The most potent compounds in vitro are 108, 109, 111, 114, and 116, having relative potencies of 1.0, 1.0, 1.3, 1.1, and 2.6 as compared to the potency of captopril.The most potent compounds in vivo intravenously are 108, 111, 114, 116, 117, and 97.
- Smith, Elisabeth M.,Swiss, Gerald F.,Neustadt, Bernard R.,Gold, Elijah H.,Sommer, Jane A.,et al.
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p. 875 - 885
(2007/10/02)
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