The discovery of novel, potent and highly selective inhibitors of inducible nitric oxide synthase (iNOS)
摘要:
By careful analysis of experimental X-ray ligand crystallographic protein data across several inhibitor series we have discovered a novel, potent and selective series of iNOS inhibitors exemplified by compound 8. (C) 2011 Elsevier Ltd. All rights reserved.
There is disclosed the use of a compound of formula (I) wherein R
1
, R
2
, X, Y, V, W and Z are as defined in the specification, and pharmaceutically acceptable salts, enantiomers or racemates thereof, in the manufacture of a medicament, for the treatment or prophylaxis of diseases or conditions in which inhibition of nitric oxide synthase activity is beneficial. Certain novel compounds of formula (Ia) and pharmaceutically acceptable salts thereof, and enantiomers and racemates thereof are disclosed; together with processes for their preparation, compositions containing them and their use in therapy. The compounds of formulae (I) and (Ia) are inhibitors of the enzyme nitric oxide synthase and are thereby particularly useful in the treatment or prophylaxis of inflammatory disease.
Chemoselective asymmetric synthesis of C-3a-(3-hydroxypropyl)tetrahydropyrrolo[2,3-b]indole and C-4a-(2-aminoethyl)-tetrahydropyrano[2,3-b]indole derivatives
The asymmetric synthesis of new tetrahydropyrrolo[2,3-b]indole 19 and tetrahydropyrano[2,3-b]indole 20 rings, substituted in position C-3a and C-4a with a hydroxy- and an amino functionalized chain, respectively, was performed starting from the racemic spiro[cyclohexane-1,3′-indoline]-2′,4-diones 7. The enantiopure spiro oxo-azepinoindolinone (+)-10, obtained from (±)-7 by the way of an asymmetric
新的四氢吡咯并[2,3- b ]吲哚19和四氢吡喃并[2,3- b ]吲哚20环的不对称合成,分别在C-3a和C-4a位被羟基和氨基官能化的链取代,从外消旋螺[环己烷-1,3'-二氢吲哚] -2',4-二酮7开始。制备了通过不对称扩环从(±)-7获得的对映体螺氧基-氮杂叠氮吲哚酮(+)- 10和通过水解10得到的氨基酸(+)- 14作为关键中间体用于合成对映纯化合物(-)- 19和(-)-20。由于氨基酸14是化学衍生物制备衍生物19和20的常用中间体,因此进行了实验和计算研究,以选择性地获得这些化合物并为其形成提供机理上的合理化。
Ring Opening and Rearrangement Reactions of Tricyclo[4.2.1.0<sup>2,5</sup>]nonan-9-one
to synthesize bicyclo[4.2.0]octanes by a sequence of intramolecular copper(I)-catalyzed [2+2] photocycloaddition and subsequent fragmentation reactions. The concept was tested by subjecting the photochemically accessible tricyclo[4.2.1.0 2,5 ]nonan-9-one to four different ring-opening or rearrangement reactions, which allowed for the formation of functionalized bicyclo[4.2.0]octanes by cleavage of
There is disclosed the use of a compound of formula (I) wherein R
1
, R
2
, X, Y, V, W and Z are as defined in the specification, and pharmaceutically acceptable salts, enantiomers or racemates thereof, in the manufacture of a medicament, for the treatment or prophylaxis of diseases or conditions in which inhibition of nitric oxide synthase activity is beneficial. Certain novel compounds of formula (Ia) and pharmaceutically acceptable salts thereof, and enantiomers and racemates thereof are disclosed; together with processes for their preparation, compositions containing them and their use in therapy. The compounds of formulae (I) and (Ia) are inhibitors of the enzyme nitric oxide synthase and are thereby particularly useful in the treatment or prophylaxis of inflammatory disease.
The stereochemistry of the drug molecule is gaining greater therapeutic importance and thus much attention was drawn in synthesis of chiral compounds by the pharmaceutical industry. In this study Saccharomyces cerevisiae cells immobilized on functionalized alginate beads, catalyze the bio-reduction of prochiral ketones 1a-12a to their corresponding chiral alcohols 1b-12b in higher yields of 60-99% and.excellent optical purity 75-97%. The synthesized chiral azido alcohols 10b-12b were further subjected to hydrogenation using Palladium(Pd) nanoparticles (<= 5 nm), to obtain chiral amino alcohols 10c-12c of therapeutic importance. Thus, a simple, green and inexpensive continuous chemo-enzymatic process has been developed in the synthesis of chiral alcohols/amino alcohols to enhance the scope of the methodology towards industrial application. (C) 2016 Elsevier B.V. All rights reserved.