- PHARMACEUTICAL COMPOUNDS
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This application describes substituted 1,3,4,6,7,11b-hexahydro-benzo(a)quinolizine compounds, pharmaceutical compositions containing them, processes for making them and their therapeutic methods.
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Page/Page column 34
(2010/04/30)
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- Syntheses of NAMDA derivatives inhibiting NO production in BV-2 cells stimulated with lipopolysaccharide
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Sixteen derivatives of N-acetyl-3-O-methyldopamine (NAMDA), an inhibitor of BH4 synthesis, were designed and synthesized. The ability of these derivatives to inhibit NO and BH4 production by lipopolysaccharide- stimulated BV-2 microglial cells was determined. While NAMDA at 100 μM inhibited NO and BH4 production by only about 20%, its catecholamide 8, indole 23 derivative, 13, and N-acetyl tetrahydroisoquinoline 25 inhibited the NO production by >50% at the same concentration. In particular, 13 and 25 inhibited both NO and BH4 production to similar degrees, which suggested that these compounds might inhibit NO production by blocking BH 4-dependent dimerization of the newly synthesized iNOS monomer.
- Jai, Woong Seo,Srisook, Ekaruth,Hyo, Jin Son,Hwang, Onyou,Cha, Young-Nam,Dae, Yoon Chi
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p. 3369 - 3373
(2007/10/03)
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- N-sulfonyl amino acid amides, a novel class of compounds with fungicidal activity [1]
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Novel types of oomycete fungicides have been designed and prepared. The synthetic approach to these N-sulfonyl amino acid amides is outlined. Bioassays demonstrate their high efficacy against important plant diseases like Phytophthora infestans (tomato and potato late blight) and Plasmopara viticola (grape downy mildew). Structure-activity relationship studies are discussed.
- Cederbaum, Fredrik,De Mesmaeker, Alain,Jeanguenat, Andre,Kempf, Hans-Joachim,Lamberth, Clemens,Schnyder, Anita,Zeller, Martin,Zeun, Ronald
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p. 680 - 684
(2007/10/03)
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- α-sulfenimino acid derivatives
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α-Sulfenimino acid derivatives of formula I including the optical isomers thereof and mixtures of such isomers, wherein A is cycloalkyl, cycloalkenyl, aryl or heteroaryl, each optionally substituted, B is a direct bond or optionally substituted alkylene,
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- Synthesis and chemical properties of ibopamine and of related esters of N-substituted dopamines - Synthesis of ibopamine metabolites
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The therapeutic usefulness of intravenously infused dopamine in congestive heart failure and in shock prompted us to synthesize a wide series of 3,4-O-diesters of dopamine and N-substituted derivatives to obtain an orally active dopamine-like prodrug having adequate absorption and duration of action. The pharmacological results and in particular, the hemodynamic studies in the dog led to the selection of ibopamine, i.e. the 3,4-diisobutyryl ester of N-methyldopamine and to its development as a useful drug for the chronic treatment of congestive heart failure. The choice of ibopamine from among several analogs was also influenced by other favourable properties such as good chemical stability in pharmaceutical formulations and in the biopharmaceutical phases of the absorption, and fast enzymatic activation of the prodrug by plasma and peripheral tissue esterases; the latter property appeared desirable to avoid any accumulation in the central nervous system and consequent undesired side effects. The isomeric mixture of 3-O- and 4-O- isobutyrates of N-methyldopamine as well as the main conjugated metabolites, i.e. the 3-O- and 4-O-sulphate and 4-O-β-glucuronide of N-methyldopamine were synthesized as analytical references in metabolic studies and for the investigation of their pharmacokinetic and pharmacological properties. Dopamine O-sulphates were also prepared using the methods developed for the corresponding N-methyl derivatives.
- Casagrande,Santangelo,Saini,Doggi,Gerli,Cerri
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p. 291 - 303
(2007/10/02)
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