Total synthesis of calebin-A, preparation of its analogues, and their neuronal cell protectivity against β-amyloid insult
摘要:
A total synthesis of Calebin-A (1), a novel curcuminoid isolated from turmeric (Curcuma longa, Zingiberaceae) that has been demonstrated to protect neuronal cells from beta -amyloid insult, was successfully achieved in four steps. Elaborating on this synthetic route. 13 analogues were prepared for a structure-activity relationship (SAR) study. It was found that the parent compound 1 and derivatives 21, 28, and 30 protect PC12 rat pheocromocytoma and IMR-32 human neuroblastoma cells from beta -amyloid(25-35) insult. These results suggest that hydroxy group at para-position is most critical for the expression of biological activity. (C) 2001 Elsevier Science Ltd. All rights reserved.
Disclosed herein are latex emulsion compositions comprising water, turmeric, at least one surfactant, and at least one organic monomer, wherein the latex emulsion composition has an average particle size of less than about 250 nm. Also disclosed herein are processes for preparing a latex emulsion composition comprising water, turmeric, at least one surfactant, and at least one organic monomer, wherein the latex emulsion composition has an average particle size of less than about 250 nm. Further disclosed herein is the use of turmeric-containing latex emulsion compositions as paints, inks, toners, cosmetics, health aids, beauty aids, foods, and coatings.