- Search for Configurationally Stable, Aracemic α-Amino Organolithiums
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The search for configurationally stable α-amino carbanions has led to an interesting observation of differing reactivity of diastereomeric organolithiums and to the characterization of aracemic 2-lithio-N-methylpiperidine and 2-lithio-N-methylpyrrolidine as configurationally stable α-aminoorganolithiums.Details for the preparation of these and related α-lithioheterocycles, evaluation of their and configurational stability, and a preliminary evaluation of the stereoselevtivity of their reactions with electrophiles is presented. - Keywords: α-Amino organolithiums; α-amino carbaions; 2-lithiopiperidine; 2-lithiopyrrrolidine; configurationally stable carbanions.
- Gawley, Robert E.,Zhang, Qianhui
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- FUMAGILLOL COMPOUNDS AND METHODS OF MAKING AND USING SAME
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Disclosed herein, in part, are fumagillol compounds and methods of use in treating medical disorders, such as obesity. Pharmaceutical compositions and methods of making fumagillol compounds are provided. The compounds are contemplated to have activity against methionyl aminopeptidase 2.
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- 6-AMINO QUINAZOLINE OR 3-CYANO QUINOLINE DERIVATIVES, PREPARATION PROCESS AND PHARMACEUTICAL USE THEREOF
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The present disclosure relates to 6-amino quinazoline or 3-cyano quinoline derivatives, preparation processes and pharmaceutical compositions containing them. Specifically, the present disclosure relates to novel 6-amino quinazoline or 3-cyano quinoline derivatives presented by formula (I), or its tautomer, enantiomer, diastereomer, racemate or pharmaceutically acceptable salts thereof, or metabolite, metabolic precursor or prodrug thereof, and the uses for treatment especially for protein kinase inhibitors, in which each substitute group of general formula (I) is as defined in the specification.
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Page/Page column 44; 45
(2016/10/08)
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- PHARMACEUTICALLY ACCEPTABLE SALT OF (E)-N-[4-[[3-CHLORO-4-(2-PYRIDYLMETHOXY)PHENYL]AMINO]-3-CYANO-7-ETHOXY-6-QUINOLYL]-3-[(2R)-1-METHYLPYRROLIDIN-2-YL]PROP-2-ENAMIDE, PREPARATION METHOD THEREFOR, AND MEDICAL USE THEREOF
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Provided as represented by formula (I) is a pharmaceutically acceptable salt of (E)-N-[4-[[3-chloro-4-(2-pyridylmethoxy)phenyl]amino]-3-cyano-7-ethoxy-6-quinolyl] -3-[(2R)-1-methylpyrrolidin-2-yl]prop-2-enamide, a preparation method therefor, and a use thereof as a therapeutic agent and especially as a protein kinase inhibitor.
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Page/Page column 0032; 0033
(2014/01/23)
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- PHARMACEUTICALLY ACCEPTABLE SALT OF (E)-N-[4-[[3-CHLORO-4-(2-PYRIDYLMETHOXY)PHENYL]AMINO]-3-CYANO-7-ETHOXY-6-QUINOLYL]-3-[(2R)-1-METHYLPYRROLIDIN-2-YL]PROP-2-ENAMIDE, PREPARATION METHOD THEREOF, AND MEDICAL USE THEREOF
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Provided as represented by formula (I) is a pharmaceutically acceptable salt of (E)-N-[4-[[3-chloro-4-(2-pyridylmethoxy)phenyl]amino]-3-cyano-7-ethoxy-6-quinolyl]-3-[(2R)-1-methylpyrrolidin-2-yl]prop-2-enamide, a preparation method thereof, and a use thereof as a therapeutic agent, and especially as a protein kinase inhibitor.
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Paragraph 0037; 0038
(2014/02/15)
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- 6-AMINO QUINAZOLINE OR 3-CYANO QUINOLINE DERIVATIVES, PREPARATION METHODS AND PHARMACEUTICAL USES THEREOF
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6-amino quinazoline or 3-cyano quinoline derivatives, preparation methods and pharmaceutical uses thereof are disclosed. Specifically, the present disclosure discloses novel 6-amino quinazoline or 3-cyano quinoline derivatives presented by general formula (I), or tautomers, enantiomers, diastereomers, racemates or pharmaceutically acceptable salts thereof, or metabolites, metabolic precursors or prodrugs thereof, and their uses as treatment agents especially as protein kinase inhibitors, in which each substitutent group of general formula (I) is as defined in the specification.
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- QUATERNARY AMMONIUM SALTS AS M3 ANTAGONISTS
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Compounds of formula (I), in salt or zwitterionic form, wherein J, L, M, R1, R2, R3, R4 and R5 have the meanings as indicated in the specification, are useful for treating conditions that are mediated by the muscarinic M3 receptor. Pharmaceutical compositions that contain the compounds and a process for preparing the compounds are also described.
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Page/Page column 38-39
(2008/06/13)
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- Enantioselective, facially selective carbomagnesation of cyclopropenes
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Described is the facially selective and enantioselective addition of carbon nucleophiles to prochiral 3-hydroxymethylcyclopropenes. The process creates up to four stereocenters in a tandem addition/capture sequence that combines three simple materials to give complex and diverse products. The asymmetry is induced by the inexpensive and recoverable ligand (S)-N-methylprolinol. The enantioselectivity (90-98% ee with MeMgCl) is high for a range of cyclopropenes and electrophiles. Importantly, the diastereoselectivity is complementary to that obtained by enantioselective cyclopropanation with aryldiazoacetates. High enantioselectivities are obtained only when methoxide is included in the reaction. Evidence is provided that at least two chiral ligands are involved in the enantioselectivity-determining step. Copyright
- Liu, Xiaozhong,Fox, Joseph M.
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p. 5600 - 5601
(2007/10/03)
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- Analogues of carbacholine: Synthesis and relationship between structure and affinity for muscarinic and nicotinic acetylcholine receptors
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A series of acyclic and heterocyclic analogues of carbacholine (1) was synthesized using N-methylcarbacholine (MCC, 2), N,N-dimethylcarbacholine (DMCC, 3), and the corresponding tertiary amine (4) as leads. Whereas nicotinic acetylcholine receptor affinity was determined using [3H]nicotine as the radioactive ligand, [3H]oxotremorine-M ([3H]Oxo-M) and [3H]quinuclidinyl benzilate ([3H]QNB), in some cases supplemented with [3H]pirenzepine ([3H]PZ), were used as radioligands for muscarinic acetylcholine receptors on rat brain membranes. On the basis of receptor binding data, nicotinic/muscarinic (N/M) selectivity factors were determined, and muscarinic receptor efficacy (M agonist index) and M1 selectivity (M2/M1 index) estimated. In most cases, quaternized analogues showed higher affinity than the corresponding tertiary amines for muscarinic and, in particular, nicotinic receptor sites. Among the new compounds, N,N-diethylcarbacholine (9e) (IC50 = 0.046 μM), (S)-1-methyl-2-(N,N-dimethylaminocarbonyloxymethyl)pyrrolidine (17k) (IC50 = 0.068 μM), and the corresponding quaternized analogue, 18k (IC50 = 0.018 μM) showed the highest nicotinic receptor affinity. The tertiary amine, 17k showed much higher nicotinic receptor affinity than the acyclic analogue, 4 (IC50 = 5.7 μM), and the N/M selectivity factor determined for 17k (150) is an order of magnitude lower than that of nicotine (1400). The N/M selectivity factors for MCC (2) and DMCC (3), previously reported to be highly selective nicotinic receptor ligands, were shown to be 6.5 and 60, respectively, the latter value being comparable with that of 18k (89).
- Sokilde, Birgitte,Mikkelsen, Ivan,Stensbol, Tine B.,Andersen, Birgit,Ebdrup, Soren,Krogsgaard-Larsen, Povl,Falch, Erik
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- Alkylation of 2-Lithio-N-Methylpiperidines and -pyrrolidines: Scope, Limitations, and Stereochemistry
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The scope and limitations of the alkylation of racemic and nonracemic 2-lithipiperidines and -pyrrolidines, obtained by transmetalation of the corresponding stannanes, is reported.These organolithiums react with a variety of electrophiles to afford 2-substituted pyrrolidines and piperidines in excellent yield.With primary alkyl halides the reaction proceeds with net inversion of configuration at the metal-bearing carbon in the piperidines; in the pyrrolidines there is a mixture of inversion and retention, with the former predominating.With most carbonyl electrophiles (carbon dioxide, dimethyl carbonate, methyl chloroformate, pivaloyl chloride, benzaldehyde, and dialkyl ketones), retention is observed in both cases.Electrophiles such as benzophenone, benzyl bromide, and tert-butyl bromoacetate afford racemic coupling products.A mechanistic interpretation is presented.
- Gawley, Robert E.,Zhang, Qianhui
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p. 5763 - 5769
(2007/10/03)
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