Name: 1-Bromo-5-chloropentane, As a society publisher, everything we do is to support the scientific community – so you can trust us to always act in your best interests, and get your work the international recognition that it deserves. 54512-75-3, Name is 1-Bromo-5-chloropentane, SMILES is ClCCCCCBr, belongs to quinuclidine compound. In a article, author is Primozic, I, introduce new discover of the category.
Both enantiomers of quinuclidin-3-yl benzoate (RQBz and SQBz) were synthesized in order to examine the stereoselectivity of the hydrolysis of these esters catalyzed by horse serum butyrylcholinesterase (BChE). The hydrolysis of benzoylcholine (BzCh) was also studied in order to determine the influence of the alcohol part of the esters upon the kinetics. The k(cat) value for the substrates decreased in order BzCh > RQBz (4-fold slower) much greater than SQBz (76-fold slower reaction). K-M values determined for quinuclidinium substrates revealed that the binding affinity of RQBz (0.28 mm) is approximately 2-fold lower than that of SQBz (0.13 mM) towards BChE. From the ratio of the enantiomeric k(cat)/K-M values, an enantiomeric excess of 78% was calculated, indicating that the resolution of racemic quinuclidin-3-yl benzoate can be achieved by hydrolysis with BChE. The orientations of all the studied benzoate esters and butyrylcholine (BuCh) in the active site of human BChE were proposed by flexible ligand docking with AutoDock 3.0. Analyses of the Michaelis complexes obtained revealed that there are numerous similar close contacts in the active site. The main difference in binding of quinuclidinium and choline esters was found in the ammonium electrostatic region which includes cation-pi interaction of the ammonium moiety of substrates with the indole ring of Trp(84). The important cation-pi interaction with Trp(84) was lowest in the case of the S-enantiomer of QBz, which might be the main explanation for the slowest rate of hydrolysis of that compound. Copyright (C) 2002 John Wiley Sons, Ltd.
Name: 1-Bromo-5-chloropentane, I am very proud of our efforts over the past few months and hope to 54512-75-3 help many people in the next few years.
Reference:
Quinuclidine – Wikipedia,
,Quinuclidine | C7H13N | ChemSpider