The chemically modifiedanalogs, the demethylated analogs 4–6, the tetrahydro analogs 7–9 and the hexahydro analogs 10–12, of curcumin (1), demethoxycurcumin (2) and bisdemethoxycurcumin (3) were evaluated for their inhibitory activity on lipopolysaccharide activated nitric oxide (NO) production in HAPI microglial cells. Di-O-demethylcurcumin (5) and O-demethyldemethoxycurcumin (6) are the two most
bisdemethoxycurcumin (3), the curcuminoid constituents of the medicinal plant Curcuma longa L., have been structurally modified to 55 analogs and antimycobacterial activity against Mycobacterium tuberculosis has been evaluated. Among the highly active curcuminoids, the isoxazole analogs are the most active group, with mono-O-methylcurcumin isoxazole (53) being the most active compound (MIC 0.09 μg/mL). It was
NEW SYNERGISTIC PHYTOCHEMICAL COMPOSITION FOR THE TREATMENT OF OBESITY
申请人:GOKARAJU Ganga Raju
公开号:US20100227828A1
公开(公告)日:2010-09-09
Synergistic anti-adipogenic and pro-lipolytic compositions for the prevention and amelioration of adipogenesis and lipolysis mediated diseases, comprising at least two extracts selected from enriched demethylated curcuminoids obtained from
Curcuma longa, Moringa oleifera
and
Murraya koenigii
. The anti-adipogenic and pro-lipolytic compositions optionally contain one or more anti-obesic agents. These compositions are useful for preventing anti-inflammatory and free radical mediated diseases.
The invention discloses a compound of formula (I) wherein, at least one of R
1
, R
2
, R
3
and R
4
is —C(═O)R
n
and R
1
, R
2
R
3
and R
4
are H or CH
3
and R
n
is alkyl or alkenyl group. The alkenyl group have one or more number of double bonds either in cis form or trans form or both. In R
n
, where n is 12 to 30 carbons; and pharmaceutically acceptable salt thereof. The said alkenyl groups are preferably selected from the group consisting of eicosapentaenoic acid (EPA) or DHA (docosahexaenoic acid). This invention further discloses processes for their preparation of compounds of formula I and pharmaceutical compositions that contain these compounds.
Inhibition of the amyloid beta aggregation process could possibly prevent the onset of Alzheimer's disease. In this article, we report a structure-activity relationship study of curcumin analogues for anti amyloid beta aggregation activity. Compound 7, the ideal amyloid beta aggregation inhibitor in vitro among synthesized curcumin analogues, has not only potent anti amyloid beta aggregation effects, but also water solubility more than 160 times that of curcumin. In addition, new approaches to improve water solubility of curcumin-type compounds are proposed. (C) 2014 Elsevier Ltd. All rights reserved.