- HETEROCYCLE DERIVATIVE HAVING PGD2 RECEPTOR ANTAGONIST ACTIVITY
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The present invention is related to a compound represented by formula (I), wherein X1, X2, X3, X4, X5, R5, R6, R7, R8, n, p, q, ring A and ring B are as described in the specification, or a
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Paragraph 0556-0559
(2014/07/22)
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- N substituted 3-amino-2,2-di-c-alkyl-1,4-butyrolactones and 1,4-thiobutyrolactones for use as promoter of γ-aminobutyric acid activity and for treating nervous disorders and preparation method
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The invention concerns compounds represented by general formula (I) wherein: Z represents a sulfur or oxygen atom; the groups R1 and R2, identical or different, represent each a alkyl group or an alkenyl group; X represents a CO, a CO2, an SO, or an SO2and the group R represents an alkyl, aryl, alkenyl, or aralkyl group, provided that when Z represents an oxygen atom, X an SO2and R a group (a), R1 and R2 do not both represent the methyl group. The invention also concerns methods for preparing said compounds, pharmaceutical compositions containing them and their use as promoter of γ-aminobutyric acid and as medicine particularly designed for treating nervous disorders.
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Page column 27-28
(2010/02/06)
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- N-substituted 4-amino-3,3-dipropyl-2(3H)-furanones: New positive allosteric modulators of the GABAA receptor sharing electrophysiological properties with the anticonvulsant loreclezole
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1,4-Addition of benzylamine to 2(5H)-furanone followed by dialkylation of the 3-position with allylbromide gave (±)-4-benzyl-3,3-diallyl-2(3H)-furanone (8), which served as the intermediate for the synthesis of various N-substituted 4-amino-3,3-dipropyl-2
- El Hadri, Ahmed,Abouabdellah, Ahmed,Thomet, Urs,Baur, Roland,Furtmüller, Roman,Sigel, Erwin,Sieghart, Werner,Dodd, Robert H.
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p. 2824 - 2831
(2007/10/03)
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- Cesium effect: High chemoselectivity in direct N-alkylation of amines
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A novel method for the mono-N-alkylation of primary amines, diamines, and polyamines was developed using cesium bases in order to prepare secondary amines efficiently. A cesium base not only promoted alkylation of primary amines but also suppressed overalkylations of the produced secondary amines. Various amines, alkyl bromides, and alkyl sulfonates were examined, and the results demonstrated this methodology was highly chemoselective to favor mono-N-alkylation over dialkylation. In particular, use of either sterically demanding substrates or amino acid derivatives afforded the secondary amines exclusively, offering wide applications in peptidomimetic syntheses.
- Salvatore, Ralph Nicholas,Nagle, Advait S.,Kyung, Woon Jung
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p. 674 - 683
(2007/10/03)
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- Chiral quinolone intermediates
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Chiral compounds having the formulae STR1 useful in the synthesis of quinolone intermediates.
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