This work describes the isolation of an active flavonoid fraction and identification of isorhamnetin 3-O-β-D-(6''-acetyl)-galactopyranoside from flowers of B. perennis, and also the evaluation of anticholinesterase (AChE) activity of ethanolic extract from flowers (EEF) and the active fraction. The chemical structure of the flavonoid was defined on the basis of spectroscopic ¹H NMR, IR and UV data. EEF or flavo...
This paper describes the chemical composition and acetylcholinesterase inhibition of an active chromatographic fraction of the EtOAc extract of Citrus limon leaves. The composition of the active fraction presented a mixture of two coumarins, 5,8-dimethoxy-psoralen and 5,7- dimethoxycoumarin, identified by ¹H and ¹³C NMR data analysis, including DEPT, COSY, HMBC and HSQC experiments. It was also demonstrated tha...
As empresas de modo geral vivem uma realidade na qual não podem mais planejar nem agir de maneira isolada, exigindo-se um comportamento coordenado entre as que pertencem a uma mesma cadeia de produção. Nesse contexto, a coordenação em cadeias de produção ganha notoriedade por promover o gerenciamento integrado de empresas que compartilham o objetivo de agregar valor ao produto final da cadeia. São vários os mot...