The study of the reactivity of a series of isatin-1-acet-amides with hot alkoxides is described. These reactions lead to 1,4-dihydro-3-hydroxy-4-oxo-2-quinolinecarboxamides as main products, and 3-hydroxy-2-oxindoles as well as other minor products. Experimental results indicate that the starting compounds undergo transformation through two principal routes: ring expansion of isa-tin leading to quinoline
The present invention provides an integrase inhibitor. The inventors have have found the following compound of formula (I) possessing an integrase inhibitory activity.
1
(wherein, R
C
and R
D
taken together with the neighboring carbon atoms form a ring which may be a condensed ring, Y is hydroxy, mercapto or amino; Z is O, S or NH; R
A
is a group shown by
2
(wherein, C ring is N-containing aromatic heterocycle) or the like)
The present invention relates generally to a method of modulating cellular functioning. More particularly, the present invention relates to a method of modulating B cell functioning, for example B cell proliferation, utilising an IDO-mediated tryptophan metabolite as herein defined (particular examples of such IDO-mediated tryptophan metabolites include 3-hydroxykynurenic acid, 3-hydroxyanthranilic acid, picolinic acid, quinolinic acid and tranilast). The method of the present invention is useful, inter alia, in the treatment and/or prophylaxis of conditions characterised by aberrant, unwanted or otherwise inappropriate B cell functioning such as antibody production, autoimmune conditions and B cell proliferation and neoplasias. In a related aspect, the present invention is directed to a method of therapeutically and/or prophylactically treating rheumatoid arthritis via the administration of the above-mentioned compounds.
Combination therapy is disclosed herein for the treatment an arthritic condition (e.g. rheumatoid arthritis, osteoarthritis or psoriatic arthritis). The therapies disclosed herein comprise administering tranilast or an analogous compound in combination with a pharmaceutical agent, such as a non-steroidal anti-inflammatory drug, a disease-modifying drug, a COX-2 inhibitor, an antibiotic, an analgesic or combination thereof.
New extracts of ginkgo biloba and their methods of preparation
申请人:INDENA S.p.A.
公开号:EP0360556A1
公开(公告)日:1990-03-28
A process is provided for producing a purified extract from Ginkgo biloba leaves by solvent extraction with selected solvents. In the process, a crude or partially purified extract is subjected to solvent extraction with a solvent comprising a C₆₋₈ aromatic hydrocarbon and a C₃₋₆ lower alkanol. Pharmaceutical compositions comprising dimeric flavones and/or polyphenols are also described.