PMID- 30724629 OWN - NLM STAT- MEDLINE DCOM- 20190222 LR - 20200225 IS - 1475-6374 (Electronic) IS - 1475-6366 (Print) IS - 1475-6366 (Linking) VI - 34 IP - 1 DP - 2019 Dec TI - Evaluation of a flavonoids library for inhibition of pancreatic alpha-amylase towards a structure-activity relationship. PG - 577-588 LID - 10.1080/14756366.2018.1558221 [doi] AB - alpha-Amylase has been considered an important therapeutic target for the management of type 2 diabetes mellitus (T2DM), decreasing postprandial hyperglycaemia (PPHG). In the present work, a panel of 40 structurally related flavonoids was tested, concerning their ability to inhibit alpha-amylase activity, using a microanalysis screening system, an inhibitory kinetic analysis and molecular docking calculations. From the obtained results, it was possible to observe that the flavone with a -Cl ion at 3-position of C-ring, an -OH group at 3'- and 4'- positions of B-ring and at 5- and 7- positions of A-ring and the C2 = C3 double bond, was the most active tested flavonoid, through competitive inhibition. In conclusion, some of the tested flavonoids have shown promising inhibition of alpha-amylase and may be considered as possible alternatives to the modulation of T2DM. FAU - Proenca, Carina AU - Proenca C AUID- ORCID: 0000-0003-0859-6526 AD - a LAQV, REQUIMTE, Laboratory of Applied Chemistry, Department of Chemical Sciences, Faculty of Pharmacy , University of Porto , Porto , Portugal. FAU - Freitas, Marisa AU - Freitas M AUID- ORCID: 0000-0001-9114-9967 AD - a LAQV, REQUIMTE, Laboratory of Applied Chemistry, Department of Chemical Sciences, Faculty of Pharmacy , University of Porto , Porto , Portugal. FAU - Ribeiro, Daniela AU - Ribeiro D AUID- ORCID: 0000-0001-9733-7934 AD - a LAQV, REQUIMTE, Laboratory of Applied Chemistry, Department of Chemical Sciences, Faculty of Pharmacy , University of Porto , Porto , Portugal. FAU - Tome, Sara M AU - Tome SM AUID- ORCID: 0000-0002-9021-2909 AD - b Department of Chemistry and QOPNA , University of Aveiro , Aveiro , Portugal. FAU - Oliveira, Eduardo F T AU - Oliveira EFT AUID- ORCID: 0000-0003-4637-2099 AD - c UCIBIO, REQUIMTE, Department of Chemistry and Biochemistry, Faculty of Sciences , University of Porto , Porto , Portugal. FAU - Viegas, Matilde F AU - Viegas MF AUID- ORCID: 0000-0002-4472-9691 AD - c UCIBIO, REQUIMTE, Department of Chemistry and Biochemistry, Faculty of Sciences , University of Porto , Porto , Portugal. FAU - Araujo, Alberto N AU - Araujo AN AUID- ORCID: 0000-0001-5348-4924 AD - a LAQV, REQUIMTE, Laboratory of Applied Chemistry, Department of Chemical Sciences, Faculty of Pharmacy , University of Porto , Porto , Portugal. FAU - Ramos, Maria J AU - Ramos MJ AUID- ORCID: 0000-0002-7554-8324 AD - c UCIBIO, REQUIMTE, Department of Chemistry and Biochemistry, Faculty of Sciences , University of Porto , Porto , Portugal. FAU - Silva, Artur M S AU - Silva AMS AUID- ORCID: 0000-0003-2861-8286 AD - b Department of Chemistry and QOPNA , University of Aveiro , Aveiro , Portugal. FAU - Fernandes, Pedro A AU - Fernandes PA AUID- ORCID: 0000-0003-2748-4722 AD - c UCIBIO, REQUIMTE, Department of Chemistry and Biochemistry, Faculty of Sciences , University of Porto , Porto , Portugal. FAU - Fernandes, Eduarda AU - Fernandes E AUID- ORCID: 0000-0001-6424-0976 AD - a LAQV, REQUIMTE, Laboratory of Applied Chemistry, Department of Chemical Sciences, Faculty of Pharmacy , University of Porto , Porto , Portugal. LA - eng PT - Journal Article PL - England TA - J Enzyme Inhib Med Chem JT - Journal of enzyme inhibition and medicinal chemistry JID - 101150203 RN - 0 (Flavonoids) RN - 0 (Glycoside Hydrolase Inhibitors) RN - 0 (Small Molecule Libraries) RN - EC 3.2.1.1 (Pancreatic alpha-Amylases) SB - IM MH - Dose-Response Relationship, Drug MH - Flavonoids/chemical synthesis/chemistry/*pharmacology MH - Glycoside Hydrolase Inhibitors/chemical synthesis/chemistry/*pharmacology MH - Humans MH - Molecular Structure MH - Pancreatic alpha-Amylases/*antagonists & inhibitors/metabolism MH - Small Molecule Libraries/chemical synthesis/chemistry/*pharmacology MH - Structure-Activity Relationship PMC - PMC6366418 OTO - NOTNLM OT - diabetes OT - docking OT - flavonoids OT - alpha-Amylase inhibition EDAT- 2019/02/07 06:00 MHDA- 2019/02/23 06:00 PMCR- 2019/02/06 CRDT- 2019/02/07 06:00 PHST- 2019/02/07 06:00 [entrez] PHST- 2019/02/07 06:00 [pubmed] PHST- 2019/02/23 06:00 [medline] PHST- 2019/02/06 00:00 [pmc-release] AID - 1558221 [pii] AID - 10.1080/14756366.2018.1558221 [doi] PST - ppublish SO - J Enzyme Inhib Med Chem. 2019 Dec;34(1):577-588. doi: 10.1080/14756366.2018.1558221.