Carbohydrate-spiro-heterocycles

Carbohydrate-spiro-heterocycles PDF Author: László Somsák
Publisher: Springer Nature
ISBN: 3030319423
Category : Science
Languages : en
Pages : 295

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Book Description
This volume is devoted to compounds in which the spiro centre is part of a pyranoid or furanoid or an iminosugar ring. The chapters contributed deal with methodological peculiarities of syntheses of natural and artificial sugar derived spirocycles as well as their biological applications and other utilities including marketed drugs. Carbohydrates are ubiquitous molecules in nature and participate in a vast number of biological interactions. Especially their conjugates with practically all kinds of primary and secondary metabolic small molecules (and also biomacromolecules) representing valuable tools for glycobiology research and also lead compounds for drug discovery. While monosaccharides per se appear as heterocycles, their natural conjugates frequently exhibit spiro(hetero)cyclic derivatives, in many cases of high therapeutical relevance. As a consequence, the field of carbohydrate-spiro-heterocycles attracts intense interest from both chemical and biomedical aspects therefore this volume will be of interest for synthetic and medicinal chemists and (glyco)biologists, as well as researchers involved in various biomedical fields.

Carbohydrate-spiro-heterocycles

Carbohydrate-spiro-heterocycles PDF Author: László Somsák
Publisher: Springer Nature
ISBN: 3030319423
Category : Science
Languages : en
Pages : 295

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Book Description
This volume is devoted to compounds in which the spiro centre is part of a pyranoid or furanoid or an iminosugar ring. The chapters contributed deal with methodological peculiarities of syntheses of natural and artificial sugar derived spirocycles as well as their biological applications and other utilities including marketed drugs. Carbohydrates are ubiquitous molecules in nature and participate in a vast number of biological interactions. Especially their conjugates with practically all kinds of primary and secondary metabolic small molecules (and also biomacromolecules) representing valuable tools for glycobiology research and also lead compounds for drug discovery. While monosaccharides per se appear as heterocycles, their natural conjugates frequently exhibit spiro(hetero)cyclic derivatives, in many cases of high therapeutical relevance. As a consequence, the field of carbohydrate-spiro-heterocycles attracts intense interest from both chemical and biomedical aspects therefore this volume will be of interest for synthetic and medicinal chemists and (glyco)biologists, as well as researchers involved in various biomedical fields.

A Tactical 1, 3-dipolar Cycloaddition Approach for the Synthesis of Carbohydrate Derived Polycyclic Spiro Heterocycles

A Tactical 1, 3-dipolar Cycloaddition Approach for the Synthesis of Carbohydrate Derived Polycyclic Spiro Heterocycles PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Carbohydrates in Chemistry and Biology

Carbohydrates in Chemistry and Biology PDF Author: Vinod Kumar Tiwari
Publisher:
ISBN: 9783111447025
Category : Science
Languages : en
Pages : 0

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Book Description
Carbohydrates in Chemistry and Biology provides detailed information about the green synthesis, biological importance and catalytic applications of carbohydrate derivatives. It includes topics including carbohydrate decorated compounds, bioconjugation, carbohydrate functionalized heterocycles, carbohydrate-spiro-heterocycles, heterocycles from carbohydrate precursors and natural sources of bioactive carbohydrates.

Heterocycles from Carbohydrate Precursors

Heterocycles from Carbohydrate Precursors PDF Author: El Sayed H. El Ashry
Publisher: Springer Science & Business Media
ISBN: 3540729577
Category : Science
Languages : en
Pages : 363

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Book Description
This book is a volume in the series Topics in Heterocyclic Chemistry.Itc- ers the key methods used for designing synthetic approaches to heterocycles from carbohydrates and the value and scope of these methods. Carbohydrates are widely distributed in nature and constitute the largest part of renewable biomasses. Moreover, many carbohydrates and their derivatives are comm- cially available at relatively cheap prices. Consequently their utilization is highly encouraged and economically they are of great signi?cance. Moreover, carbohydrates are highly functionalized compounds that can be readily deri- tized and/or cyclized to provide heterocyclic compounds. This book provides a modern account and an up-to-date description of the advancement in the synthesis of diverse heterocycles from carbohydrates. Carbohydrates can be considered as a source of chiral centers in addition to the variable modi?cation thereof. Herein the elaboration of the carbohydrate molecules for providing different heterocycles is the main objective and team efforts from leaders of the topics has been gathered in this volume. This book is designed to be suitable for students and researchers. It is highly recommended as a reference book and for teaching the fascinating topics related to carbohydrates, heterocycles and organic synthesis. In addition to its importance in academia, it is also an excellent source for information about the variety of methods used in the synthesis of heterocycles important to industry.

Formation Mechanisms of Some Semicarbazones and Spiro Heterocycles

Formation Mechanisms of Some Semicarbazones and Spiro Heterocycles PDF Author: Siaka Abdulfatai
Publisher:
ISBN: 9783330652736
Category :
Languages : en
Pages : 284

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Book Description


Synthesis of Naturally Occurring Nitrogen Heterocycles from Carbohydrates

Synthesis of Naturally Occurring Nitrogen Heterocycles from Carbohydrates PDF Author: El Sayed H. El Ashry
Publisher: Wiley-Blackwell
ISBN: 1405144793
Category : Science
Languages : en
Pages : 464

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Book Description
Carbohydrates are widely distributed in nature and widely available, and so are considered as a promising feedstock for the preparation of many organic chemical compounds. They are particularly useful in the preparation of nitrogen heterocycles because of their related structural characteristics and easy availability. Synthesis of Naturally Occurring Nitrogen Heterocycles from Carbohydrates will review the recent literature dealing with use of carbohydrates as raw materials in the synthesis of these materials. The text contains six chapters arranged according to the complexity of the heterocyclic compounds discussed, ranging from five to seven membered rings and from single to multiple fused rings. The book provides a detailed discussion of the various synthetic approaches to these compounds, using carbohydrate starting materials, and does not merely reference synthetic methodology but attempts to give as much detail as possible on the actual experimental conditions used, in such a way that the chemist can use the information directly to design a multi-step synthesis. It discusses the different approaches to the synthesis of a wide range of naturally occurring nitrogen heterocycles in a format that enables the reader to make comparisons and decisions on whether to use a certain procedure, to modify it, or to devise a new synthetic methodology.

Strategies for the Synthesis and Substitution of Novel Spiro Heterocycles

Strategies for the Synthesis and Substitution of Novel Spiro Heterocycles PDF Author: Chanitsara Kocharit
Publisher:
ISBN:
Category :
Languages : en
Pages : 312

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Book Description


Advances in Heterocyclic Chemistry

Advances in Heterocyclic Chemistry PDF Author: Eric F.V. Scriven
Publisher: Academic Press
ISBN: 032390128X
Category : Science
Languages : en
Pages : 332

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Book Description
Advances in Heterocyclic Chemistry, Volume 136 is the latest release in this definitive series in the field of heterocyclic chemistry, one of great importance to organic chemists, polymer chemists, and many biological scientists. Because biology and organic chemistry increasingly intersect, the associated nomenclature is used more frequently in explanations. Written by established authorities in the field from around the world, this comprehensive review combines descriptive synthetic chemistry and mechanistic insight to yield an understanding of how chemistry drives the preparation and useful properties of heterocyclic compounds. - Considered the definitive serial in the field of heterocyclic chemistry - Serves as the go-to reference for organic chemists, polymer chemists and many biological scientists - Provides the latest comprehensive reviews written by established authorities in the field - Combines descriptive synthetic chemistry and mechanistic insights to enhance understanding on how chemistry drives the preparation and useful properties of heterocyclic compounds

Amino Acids: Insights and Roles in Heterocyclic Chemistry

Amino Acids: Insights and Roles in Heterocyclic Chemistry PDF Author: Zerong Wang
Publisher: CRC Press
ISBN: 1000738922
Category : Science
Languages : en
Pages : 420

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Book Description
This is the second volume of a first-of-its-kind four-volume book set that provides readers with up-to-date information on α-amino acids, the potential challenges in working with α-amino acids, the protecting groups for the carboxyl, amino and side chain groups of the amino acids, and the most popular heterocyclic compounds that are originating from alpha-amino acids. These heterocyclic compounds include hydantoins, thiohydantoins (including 2-thiohydantoins, 4-thiohydantoins, 2,4-dithiohydantoins), 2,5-diketopiperazines, N-carboxyanhydrides, N-thiocarboxyanhydrides, sydnones, sydnonimines, azlactones, pseudoazlactones, and oxazolidin-5-ones. This is the first resource to comprehensively collect all the heterocycles that can be directly prepared from α-amino acids. In addition, almost all kinds of synthetic methods for a particular type of heterocycles from alpha-amino acids are included, along with the detailed mechanistic discussions and experimental procedures. In Volume 2: Hydantoins, Thiohydantoins, and 2,5-Diketopiperazines compiles the three IUPAC accepted nomenclature systems for heterocyclic compounds, which will be very useful for readers working in the heterocyclic chemistry field for giving synthesized molecules their correct names. In addition, three groups of heterocyclic compounds, i.e., hydantoins, thiohydantoins (including 2-thiohydantoin, 4-thiohydantoin and 2,4-dithiohydantoin), and 2,5-diketopiperazines, have been organized with updated literature information. Particularly, all three groups of heterocyclic compounds have demonstrated many important biological activities, particularly anticancer and antibacterial activities. On the other hand, these three groups of heterocycles can be applied as substrates to make other chemical derivatives, particularly novel unnatural amino acids. All their reactivities have been compiled and updated. The other volumes include: Volume 1: Protecting Groups Volume 3: N-Carboxyanhydrides, N-Thiocarboxyanhydrides, and Sydnones Volume 4: Azlactones and Oxazolidin-5-ones All together, this unique 4-volume set thoroughly covers the two types of heterocyclic compounds that are originated from alpha-amino acids, providing carefully compiled updated information with detailed examples. The author has shared many thoughtful insights based on his strong background in physical organic chemistry. The volumes will be highly valuable for graduate students and senior students, as well as for professors and researchers working in the field of medicinal and pharmaceutical chemistry, organic chemistry, organic synthesis, heterocycles, and proteins and peptides.

Biomimetic Radical Chemistry and Applications

Biomimetic Radical Chemistry and Applications PDF Author: Chryssostomos Chatgilialoglu
Publisher: MDPI
ISBN: 3039283928
Category : Technology & Engineering
Languages : en
Pages : 300

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Book Description
The enormous importance of free radical chemistry for a variety of biological events, including ageing and inflammation, has attracted a strong interest in understanding the related mechanistic steps at the molecular level. Modelling the free radical chemical reactivity of biological systems is an important research area. When studying free-radical-based chemical mechanisms, biomimetic chemistry and the design of established biomimetic models come into play to perform experiments in a controlled environment that is suitably designed to be in strict connection with cellular conditions. This Special Issue gives the reader a wide overview of biomimetic radical chemistry, where molecular mechanisms have been defined and molecular libraries of products are developed to also be used as traces for the discovery of some relevant biological processes. Several subjects are presented, with 12 articles and 6 reviews written by specialists in the fields of DNA, proteins, lipids, biotechnological applications, and bioinspired synthesis, having “free radicals” as a common denominator.