α-amylase

α-Amylase, a hydrolase enzyme, catalyzes the hydrolysis of internal α-1,4-glycosidic linkages in starch, producing glucose and maltose.

Amylase (Diastase) is any one of a group of enzymes which catalyses the breakdown of starch into maltose.

Pinocembrin 7-O-[3''-O-galloyl-4'',6''-hexahydroxydiphenoyl]-β-D-glucoside can moderately inhibit α-amylase activity, with the IC50 value of 0.03 umol/ml.

Kaempferol-3,7-di-O-β-glucoside (Kaempferol 3,7-diglucoside) is a flavonol from Morettia philaena, It can inhibit α-amylase, α-glucosidase and Acetylcholinesterase. Kaempferol-3, 7-di-o-β-Glucoside has neuroprotective activity and can slow down differentiated neuronal cells SH-SY5Y from Amyloid β peptide-induced damage. Kaempferol-3, 7-di-o-β-Glucoside can be used to study neurological disorders like Alzheimer's disease.

1. Ethyl trans-caffeate (Caffeic Acid Ethyl Ester) has anti-inflammatory activity. 2. Ethyl trans-caffeate may as a promising natural compound for future application in chronic liver disease. 3. Ethyl trans-caffeate is a potent chemopreventive compound against skin carcinogenesis caused by solar UV exposure. 4. Ethyl trans-caffeate is the high-resolution structures of representative inhibitors in complex with human pancreatic α-amylase. 5. Ethyl trans-caffeate strongly inhibits neoplastic transformation of JB6 Cl41 cells without toxicity. PI3K, ERK1/2, and p38 kinase activities were suppressed by direct binding with HOEC in vitro.

Irilone has immunomodulatory, and α-amylase inhibitory activities, it exhibits the selective inhibition toward CYP3 A4 rather than other major human CYPs. Irilone exhibited prominent antioxidant activities with the IC50 value of 10.46μM. Irilone potentiat

Ficusonolide exhibits significant antidiabetic activity through its interactions with dipeptidyl peptidase-IV (DPP-IV), protein tyrosine phosphatase 1B (PTP-1B), α-glucosidase, and α-amylase.

1. Isoeugenol acetate (Acetylisoeugenol) shows good antifungal activities against R. solani and F. oxysporum. 2. Isoeugenol acetate is a mild sensitizer in vivo.

Fucoidan is found in various species of brown seaweed and algae,with anticancer, antiviral, neuroprotective, immune-modulating.

Quercetin 3-(6″-caffeoylsophoroside) is an orally active compound exhibiting α-amylase inhibitory activity, with an IC50 value of 73.66 μg/mL, and demonstrates antidiabetic effects through the reduction of oxidative stress. It is found in the hydro-methanolic extract of Cardamine hirsuta Linn and is utilized in diabetes mellitus research [1].

Trilobatin (P-Phlorizin) has anti-oxidant effect, can increase superoxide dismutase (SOD) activity.Trilobatin has anti-inflammatory effect, it potentially inhibits the lipopolysaccharide (LPS)-induced inflammatory response by suppressing the NF-κB signaling pathway.Trilobatin shows a strong inhibitory activity against α-glucosidase and a moderate inhibitory activity against α-amylase for management of postprandial hyperglycemia with less side effect.

Ellipyrone A, a γ-pyrone-based macrocyclic polyketide, demonstrates inhibitory activity against dipeptidyl peptidase-4 (IC 50 = 0.35 mM). Additionally, this compound exhibits anti-glycolytic effects on α-glucosidase (IC 50 = 0.74 mM) and α-amylase (IC 50 = 0.59 mM) [1].

Isookanin shows strong diphenyl(2,4,6-trinitrophenyl)iminoazanium (DPPH) radical-scavenging activity with the IC50 value of 7.9 ± 0.53 μM. Isookanin is a potent inhibitor of α-amylase (IC50=0.447 mg ml).

7,4'-Di-O-methylapigenin (4',7-DIMETHOXY-5-HYDROXYFLAVONE) can inhibit α-glucosidase and α-amylase enzymes and enhance 2-NBDG uptake in L6 cells, it has hypolipidemic effect on mouse pre-adipocyte (3T3L1) cell lines.

Erythrocentaurin has antibacterial activity; it also exhibits a concentration-dependent α-amylase inhibition (IC(50) 1.67 ± 0.28 mg/mL).

8,3′,4′-Trihydroxyflavone-7-O-β-D-glucopyranoside (Compound 3), a natural product isolated from Bidens bipinnata, exhibits a 22% inhibition against α-amylase at a concentration of 0.556 mg/mL [1].

trans-Chalcone (Chalkone) is an aromatic ketone that forms the central core for a variety of important biological compounds, which are known collectively as chalcones.