Hot Natural Products & Bioactive Compounds

Erythritol is a biological sweetener with applications in food and pharmaceutical industries, it is also used as a functional sugar substitute in special foods for people with diabetes and obesity because of its unique nutritional properties. Erythritol consumption acutely improved small vessel endothelial function, and chronic treatment reduced central aortic stiffness, may be as a preferred sugar substitute for patients with diabetes mellitus.

1. Marmin can inhibit contraction of the guinea-pig tracheal smooth muscle, especially by interfering histamine receptor, inhibiting the histamine release from mast, inhibiting intracellular Ca2+ release from the intracellular store and the Ca2+ influx through voltage-dependent Ca2+ channels.
2. Marmin, skimmianine, aegeline, aurapten, zeorin, and dustanin are potential to develop as antihistamine agents, especially as histamine H1 receptor antagonists by interacting with amino acid residues, Asp107, Lys179, Lys191, Asn198, and Trp428 of histamine H1 receptor.
3. S-trans-Marmin shows potent antibacterial, fungicidal, and algicidal properties.
4. Marmin shows a cell-growth inhibitory effect against L1210 and K562 in vitro.
5. Marmin and nobiletin have anti-ulcer effects, which are ascribed primarily to the maintenance of the mucosal barrier integrity and inhibition of gastric motor activity and secondarily due to the prevention of the effects of endogenous acetylcholine and histamine.

Chrysosplenol D, an efflux pump inhibitor that can potentiate the activity of commercially important antibiotics and antimalarials. Chrysosplenol D has anti-inflammatory, antimalarial, antibacterial and antifungal activities; it also exerts its anti-proliferative effect on tsFT210 cells through inhibiting cell cycle and inducing apoptosis, it may as a new cell cycle inhibitor.

Gallic acid, is a histone acetyltransferase inhibitor and a potent inhibitor of brush border sucrase and other disaccharidases, which has powerful antioxidant, anti-tumor, and anti-tyrosinase activities. It can potentially interfere with the digestive functions of the intestine. It can efficiently block neuronal cell death by downregulating the expression of cytokines and the in vivo levels of NF-κB acetylation, is a possible therapeutic approach for alleviating the inflammatory progression of Alzheimer disease.

m-Methoxyphenol is a nartural product from Luculia pincia.

epi-Eudesmol is a natural product from Laggera alata var. montana C. D. Adams.

1. Calyxamine B has inhibitory activity on acetylcholinesterase, the effect is comparable to the natural inhibitors.

1. Micromelin exhibits cytotoxicity against cholangiocarcinoma cell line, KKU-100.