Molecular Electrostatic Potential (MEP) Surface Of Pyrazolooxazines

Superior Essays
3.2. Molecular Electrostatic Potential (MEP) surface of Pyrazolooxazines.
The correlation between the molecular structure and the physicochemical property of molecules, including biological molecules and MESP-based drugs, to distinguish electron rich zones (electrophilic attack) from electron-poor ones (a nucleophilic attack) 16, 17. We represent in this study the molecular surface of the electrostatic potential (MESP), the electrostatic potential (ESP) and the electron density (ED). MESP is a surface of the electrostatic potential with the electronic density surface.
The molecular surface of the electrostatic potential (MESP) of the pyrazolooxazines is represented by the following figures 2 and 3:

ESP ED
Figure 2. 2D MESP and 3D MESP contour map of pyrawolooxazin-2-one.

ESP ED

Figure 3. 2D MESP and 3D MESP contour map of pyrazolooxazin-2-thione.

The different values of the electrostatic potential surface are given by different colors, knowing that the order of the potential is as follows: red <orange
…show more content…
The Quantitative Structure Activity Quantitative Relationship (QSAR) is currently applied in many drug design disciplines and environmental risk assessments. Our objective is to evaluate the physicochemical properties of the pyrazolooxazine derivatives (figure 5) given in this work, knowing that these molecules have an anti-inflammatory biological activity1.2. Some physicochemical properties were calculated using HyperChem 8.03 (Surface, Volume, Polazability, Refractivity and Hydration Energy and Mass) and others were calculated using the Molinspiration database online (Molecular Polar Surface Area TPSA, Number of Rotatable Bonds nrotb, nON and nOHNH). We will continue this work in the future by a quantitative calculation. We give the representation of one of these derivatives in 3 D in figure 4 with the different derivatives to study shown in figure

Related Documents

  • Improved Essays

    Nt1310 Unit 6 Assignment

    • 605 Words
    • 3 Pages

    Key Idea I The arrangement of electrons is distributed between four orbital’s; S, P, D and F. Each orbital is a different shape and holds a different number of electrons. Orbital S is a circle and it contains two electrons and orbital P has three different shells. One shell is an infinity sign, the next is a crooked infinity sign and the last is shaped like an upright infinity sign.…

    • 605 Words
    • 3 Pages
    Improved Essays
  • Improved Essays

    Nt1310 Unit 4 Lab 4

    • 367 Words
    • 2 Pages

    The first objective of Lab 4 is to use structure activity relationships to predict the properties of an acid and the potency of hallucinogenic compounds. The overall goal of the laboratory is to examine quantitative structure activity relationships (QSAR) in a system that is either chemical or biochemical. The lab is divided into two parts; predicting the acidity of an organic acid, and predicting the hallucinogenicity of derivatives of mescaline. The materials of this lab for both part 1 and part 2 are small training sets, which are groups of similar chemicals with known biological activity, a computer to graph the data that is recorded in the tables, the internet resource MiLogP to generate LogP data, and computational programs that will…

    • 367 Words
    • 2 Pages
    Improved Essays
  • Improved Essays

    Minoxidil Research Paper

    • 398 Words
    • 2 Pages

    Minoxidil, an antihypertensive vasodilator medication, which was developed in the 1950’s by a company called Upjohn originally used to treat ulcers. During their experiments with dogs, they figured out that it did not cure ulcers, but acted as a vasodilator. Due to this recent discovery, Upjohn was able to develop a compound called Minoxidil in 1963 as well as being able to synthesize over 200 variations of the compound. The molecular structure and compound of Minoxidil is C9H15N50, made entirely of nonmetals with the molecular weight being 209.2483 g/mol, the UIPAC name being 3 hydroxy, 2 imino, 6 piperidin, 1 ylpyrimidin, and 4 amine. The percentage composition of carbon being 51.65, hydrogen being 7.24, nitrogen being 33.47, and oxygen being 7.64.…

    • 398 Words
    • 2 Pages
    Improved Essays
  • Improved Essays

    LO 2.1 I understand that free energy, the portion of a biological system’s that can perform work when temperature and pressure are uniform throughout the system, is used in systems to cause change. I also understand that empirical data proves all organisms require a constant energy output to maintain organization, to grow, and to reproduce. (Campbell 119-123) LO 2.2 I understand that although free energy is always required in living systems in order to maintain organization, to grow, and to reproduce, there are multiples ways in which living systems use the energy. (Campbell 119-123) LO 2.3…

    • 391 Words
    • 2 Pages
    Improved Essays
  • Improved Essays

    Figure 4.6: A typical HPLC chromatogram of LOD for Lamivudine, Zidovudine and Nevirapine Figure 4.7: A typical HPLC chromatogram of LOQ for Lamivudine, Zidovudine and Nevirapine Table 4.7: LOD & LOQ results for Lamivudine, Zidovudine and Nevirapine Drug LOD Concentration (in µg/mL) S/N Ratio Value LOQ Concentration (in µg/mL) S/N Ratio Value Lamivudine 0.315 2.98 0.945 9.98 Zidovudine 0.405 2.97 1.080 9.97 Nevirapine 0.600 2.98 2.1 9.97 4.3.1.6 Robustness Deliberate changes in the method, i.e., changes in the flow rate and the wavelength, did not significantly affect the peak tailing, the theoretical plates (Table 4.8).…

    • 928 Words
    • 4 Pages
    Improved Essays
  • Improved Essays

    Bottle Rocket Lab Report

    • 1015 Words
    • 5 Pages

    Aim: To use a neutralization reaction to propel a model rocket. Hypothesis: That the neutralization reaction between the bicarbonate of soda and the vinegar will produce a gas, which build up enough pressure to launch the bottle rocket. Materials: Vinegar, bicarbonate of soda (NaHCO3) Equipment: Plastic Bottle, Wooden Block, Nail, Cork, Duct Tape.…

    • 1015 Words
    • 5 Pages
    Improved Essays
  • Improved Essays

    Linus Pauling was a very facile scientist. He is known by his colleagues to be the most influential chemist since Lavoisier (who was, in the 18th century, recognized to be the founder of the modern science of chemistry.) For a man that lived on this earth only 93 years, he made many strides in his areas of expertise. This was mainly chemistry, physics and molecular biology. He studied the nature of the chemical bond; also with Vitamin C, which he proclaimed could be a preventive for colds.…

    • 381 Words
    • 2 Pages
    Improved Essays
  • Improved Essays

    The peaks for the functional groups are 1678 cm-1 for the C =O, 1289 cm-1 and 1453 cm-1 for C-O, 2555 cm-1, 2671 cm-1 and 2827 cm-1for the O-H, and 1583 cm-1 for the Benzene ring. The peaks strength in the C =O are strong while the peak in the C-O are not only strong, but also sharp; they are usually hard to distinguish as it is in usually found in the fingerprint region. Moreover, the peak strengths for the O-H group are broad peaks that can be medium in strength.…

    • 1930 Words
    • 8 Pages
    Improved Essays
  • Improved Essays

    Psedo Transmembrane

    • 499 Words
    • 2 Pages

    1. Most aquaporins have a similar structural arrangement, consisting of a similar fold. This fold contains helices encasing a small water-conducting channel where water is able to arrange in a singular line. There are cytoplasmic and extracellular loops immersing into the membrane through opposing sides, and form two smaller helices creating a psedo transmembrane segment. Within the membrane, there are four aquaporin molecules forming a homo-tetramer, creating a fifth channel; the channel is mainly hydrophobic.…

    • 499 Words
    • 2 Pages
    Improved Essays
  • Great Essays

    Assignment 1: Discussion Assignment Discussion Question 1 What is the difference between biochemical reactions in healthcare? Biochemical reactions occur as a chemical reaction, which naturally takes place in a living organism. It happens within a cell involving a catabolic reaction (breaking down of molecules) or a anabolic reaction (building up of molecules).…

    • 1189 Words
    • 5 Pages
    Great Essays
  • Improved Essays

    Ionic Molecules

    • 1666 Words
    • 7 Pages

    Ionic and Covalent bonds are the two different types of bonds that hold atoms together, each having their own characteristics. The distance and charge determines the type of bond the molecules have. These bonds occur because atoms strive to obtain the ideal valence of 8. Some atoms need to gain or lose electrons in order to achieve the ideal valence. In a covalent bond, the electrons are being pulled by two atoms that are both nonmetals.…

    • 1666 Words
    • 7 Pages
    Improved Essays
  • Improved Essays

    Haloperidol and Quetiapine In modern medicine, there are two main groups of antipsychotic medicine such as, conventional antipsychotics (1st generation antipsychotics) and atypical antipsychotics (2nd generation antipsychotics). Haloperidol is a conventional antipsychotic which is used to treat schizophrenia and some other forms of psychosis. Haloperidol was developed in the late 1950s by company Janssen, and approved by the U.S. Food and Drug Administration (FDA) in 1967.…

    • 1004 Words
    • 5 Pages
    Improved Essays
  • Superior Essays

    Dianne Termine Honors Chemistry Period 5 Group: 22 Topic: Dissolving Alka-Seltzer in Different Liquids Due Date: September 30, 2016 (2) Background Research The topic of this experiment is investigating and researching whether different properties in different types of liquids affect the amount of time it takes for an Alka-Seltzer to dissolve. The independent variable would be the amount of liquid being used to dissolve the Alka-Seltzer pill.…

    • 874 Words
    • 4 Pages
    Superior Essays
  • Improved Essays

    Using scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) images and spectra were obtained from various samples of silica and platinum on silica. Each sample contains unique structures which were prepared by etching the surface of silica in different conditions. A scanning electron microscope is a type of electron microscope that produces images of topography and composition by scanning a sample with a focused beam of electrons. Samples can be observed in high vacuum, low vacuum, in wet conditions, or at elevated temperatures.…

    • 1149 Words
    • 5 Pages
    Improved Essays
  • Improved Essays

    Benzocaine was synthesized from p-toluidine in a four step synthesis. Each intermediate product, including N-acetyl-p-toluidine, p-acetamidobenzoic acid, and p-aminobenzoic acid, was checked for yield, presence, and purity through weighing, taking IR and NMR spectrums, and determining the melting point. Thin Layer Chromatography was used to ensure the completion of the final reaction from p-aminobenzoic acid to benzocaine. The yield of the first step from p-toluidine to N-acetyl-p-toluidine was 91.9%. The yield of the second step from N-acetyl-p-toluidine to p-acetamidobenzoic acid was 49.85% The yield of the third step from p-acetamidobenzoic acid to p-aminobenzoic acid was 32.49%, which was not enough to continue so some product was borrowed…

    • 878 Words
    • 4 Pages
    Improved Essays