Xem 1-20 trên 30 kết quả Stereochemistry
  • Tham khảo sách 'drug stereochemistry analytical methods and f'hannacology second edition_1', y tế - sức khoẻ, y học thường thức phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • Chapter 3 - Structure and stereochemistry of alkanes. In this chapter you will learn: Draw and name the isomers of alkanes, and explain the trends in their physical properties; draw alkane conformations, compare their energies, and predict the most stable conformations; draw and name the isomers of cycloalkanes, and explain ring strain; draw the conformations of cycloalkanes, compare their energies, and predict the most stable conformations.

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  • Stereoisomers, chirality, Examples of Handed Objects, Chirality in Molecules, Absolute Configuration, Properties of Enantiomers, Biological Discrimination,... As the main contents of the document "Stereochemistry". Invite you to consult.

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  • (BQ) Part 1 book "Organic chemistry" has contents: An introduction to the study of organic chemistry; hydrocarbons, stereochemistry and resonance; identification of organic compounds; substitution and elimination reactions.

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  • The pharmacy profession and the role of pharmacists in the modern healthcare systems have evolved quite rapidly over the last couple of decades. The services that pharmacists provide are expanding with the introduction of supplementary prescribing, provision of health checks, patient counselling and many others. The main ethos of pharmacy profession is now as much about keeping people healthy as treating them when they are not well.

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  • Chirality is a phenomenon that is manifested throughout the natural world, ranging from fundamental particles through the realm of molecules and biological organisms to spiral galaxies. Thus, chirality is of interest to physicists, chemists, biologists, and astronomers. Chiroptical spectroscopy utilizes the differential response of chiral objects to circularly polarized electromagnetic radiation. Applications of chiroptical spectroscopy are widespread in chemistry, biochemistry, biology, and physics. It is indispensable for stereochemical elucidation of organic and inorganic molecules.

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  • In this chapter, we study the three-dimensional structures of molecules to understand their stereochemical relationships. We compare the various types of stereoisomers and study ways to differentiate among stereoisomers. In future chapters, we will see how stereochemistry plays a major role in the properties and reactions of organic compounds.

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  • Tham khảo sách 'comprehensive chiroptical spectroscopy volume 1', công nghệ thông tin, kỹ thuật lập trình phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả

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  • the beginning, medicinal therapy consisteodf concoctions coadministered with incantations. Little thought was given to dissecting out the contributions of the pharmacology of the concoction from the spiritual consequences of the incantations. Eventually, potions and extracts were recognized to have predictable activity that could be observed and described objectively. Then came the capacity to estimate potency,t o l eading concentration and purification.

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  • Lecture Biochemistry (2nd edition): Chapter 4 introduce Amino Acids. In this chapter students will be able to understand: Amino Acids: Building Blocks of proteins, Acid-Base chemistry of amino acids, reactions of Amino Acids, optical activity and stereochemistry of Amino Acids, spectroscopic properties of Amino Acids, separation and analysis of a.a. Mixtures.

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  • (BQ) Part 1 book "Fundamentals of organic chemistry" has contents: Structure and bonding; acids and bases; alkanes: the nature of organic compounds; alkenes and alkynes: the nature of organic reactions; reactions of alkenes and alkynes; aromatic compounds; stereochemistry at tetrahedral centers,...and other contents.

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  • The biologically most significant genotoxic metabolite of the environmental pollutant benzo[a]pyrene (B[a]P), (+)-7R,8S-diol 9S,10R-epoxide, reacts chemically with guanine in DNA, resulting in the predominant formation of (+)-trans-B[a]P-N 2 -dG and, to a lesser extent, (+)-cis-B[a]P-N 2 -dG adducts.

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  • Synthetic rhamnolipids, derived from a natural diacylated glycolipid, RL-2,214, produced by Burkholderia(Pseudomonas) plantarii, were analyzed biophysically. Changes in the chemical structures comprised variations in the length, the stereochemistry and numbers of the lipid chains, numbers of rhamnoses, and the occurrence of charged or neutral groups.

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  • The synthesis of 10 new phosphoenolpyruvate (PEP) analogues with modifications in the phosphate and the carboxylate function is described. Included are two potential irreversible inhibitors of PEP-utilizing enzymes. One incorporates a reactive chloromethylphosphonate function replacing the phosphate group of PEP. The second contains a chloromethyl group substituting for the carboxylate function of PEP. An improved procedure for the preparation of the known (Z)- and (E)-3-chloro-PEP is also given.

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  • A furanolabdane diterpene alcohol was isolated from the rhizomes of the endemic Vietnamese medicinal plant Alpinia tonkinensis Gagnep. (Zingiberaceae). Its absolute stereostructure was established to be (12S)-15,16-epoxy-8(17),13(16),14-labdatrien-12-ol from spectroscopic data and by applying the modified Mosher’s method. It is first report on the natural occurrence and absolute stereochemistry of the diterpene which was previously known as a synthetic intermediate.

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  • Chapter 8 - Reactions of Alkenes. This chapter include objectives: Explain why electrophilic additions are among the most common reactions of alkenes; Predict the products of the reactions of alkenes, including the orientation of the reaction (regiochemistry) and the stereochemistry; propose mechanisms to explain the observed products of alkene reactions; use retrosynthetic analysis to solve multistep synthesis problems with alkenes as reagents, intermediates, or products.

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  • Chapter 9 introduce to Alkynes. In this chapter, students will be able to: Draw and name alkynes, cycloalkynes, and their derivatives; show how to synthesize alkynes by eliminations from alkyl halides and by the additions and substitutions of acetylide ions; predict the products of the reactions of alkynes, including the orientation of the reaction (regiochemistry) and the stereochemistry;...

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  • (BQ) Part 1 book "Study guide and solutions manual to accompany organic chemistry" presents the following contents: The basics-bonding and molecular structure; families of carbon compounds-functional groups, intermolecular forces, and infrared (IR) spectroscopy; acids and bases-an introduction to organic reactions and their mechanisms; stereochemistry-chiral molecules,...

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  • (BQ) Part 1 book "Organic chemistry" has contents: An introduction to the study of organic chemistry; electrophilic addition reactions, stereochemistry, and electron delocalization; substitution and elimination reactions; identification of organic compounds.

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  • (BQ) Part 1 book "Organic chemistry" has contents: Structure and bonding; stereochemistry at tetrahedral centers; an overview of organic reactions, alkenes and alkynes; alcohols, phenols, and thiols; ethers and sulfides; structure determination - mass spectrometry, infrared spectroscopy, and ultraviolet spectroscopy,...and other contents.

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