Recent Advances in Nucleosides: Chemistry and Chemotherapy

Recent Advances in Nucleosides: Chemistry and Chemotherapy
Author: C.K. Chu
Publisher: Elsevier
Total Pages: 545
Release: 2002-09-11
Genre: Science
ISBN: 0080540368

The book covers up-to-date information on nucleosides and antiviral chemotherapy contributed by the world experts in the field of nucleoside. This book is the result of a meeting honoring Dr. Jack J. Fox, who was one of the pioneers in nucleoside chemistry and chemotherapy. This book consists of 15 excellent chapters in the area, which include topics from recent synthetic methodologies, nucleoside kinase implicated in chemotherapy and drug design, excellent reviews on antiviral agents, nucleoside metabolism/mode of action in parasites, new compounds under clinical and pre-clinical trials, IMPDH inhibitors to review on nucleoside prodrugs.

Antiviral Nucleosides

Antiviral Nucleosides
Author: C.K. Chu
Publisher: Elsevier
Total Pages: 269
Release: 2003-10-15
Genre: Science
ISBN: 0080524540

• Up-to-date review on the chemistry and biology of nucleosides • Modern synthetic methodology • Comprehensive coverage of antiviral nucleosidesThis book summarizes the recent advances in nucleosides chemistry and chemotherapy over the past 10-15 years. It covers recently discovered nucleoside antiviral agents, their therapeutic aspects and biochemistry, and also extensive reviews on their chiral synthesis.

Deoxynucleoside Analogs in Cancer Therapy

Deoxynucleoside Analogs in Cancer Therapy
Author: Godefridus J Peters
Publisher: Springer Science & Business Media
Total Pages: 482
Release: 2007-11-07
Genre: Medical
ISBN: 1597451487

Successful cancer chemotherapy relies heavily on the application of various deoxynucleoside analogs. Since the very beginning of modern cancer chemotherapy, a number of antimetabolites have been introduced into the clinic and subsequently applied widely for the treatment of many malignancies, both solid tumors and hematological disorders. In the latter diseases, cytarabine has been the mainstay of treatment of acute myeloid leukemia. Although many novel compounds were synthesized in the 1980s and 1990s, no real improvement was made. However, novel technology is now capable of elucidating the molecular basis of several inborn errors as well as some specific malignancies. This has enabled the synthesis of several deoxynucleoside analogs that could be applied for specific malignancies, such as pentostatin and subsequently chlorodeoxyadenosine (cladribine) for the treatment of hairy cell leukemia. Already in the early stage of deoxynucleoside analog development, it was recognized that several of these compounds were very effective in the treatment of various viral infections, such as for the treatment of herpes infections. This formed the basis initially for the design of azidothymidine and subsequently many other analogs, which are currently successfully used for the treatment of HIV infections. As a spin-off of these research lines, some compounds not eligible for development as antiviral agents appeared to be very potent anticancer agents. The classical example is gemcitabine, now one of the most widely applied deoxynucleoside analogs, used for the (combination) treatment of non-small cell lung cancer, pancreatic cancer, bladder cancer, and ovarian cancer.

Chemical Synthesis of Nucleoside Analogues

Chemical Synthesis of Nucleoside Analogues
Author: Pedro Merino
Publisher: John Wiley & Sons
Total Pages: 859
Release: 2013-02-12
Genre: Science
ISBN: 1118498100

Compiles current tested and proven approaches to synthesize novel nucleoside analogues Featuring contributions from leading synthetic chemists from around the world, this book brings together and describes tested and proven approaches for the chemical synthesis of common families of nucleoside analogues. Readers will learn to create new nucleoside analogues with desired therapeutic properties by using a variety of methods to chemically modify natural nucleosides, including: Changes to the heterocyclic base Modification of substituents at the sugar ring Replacement of the furanose ring by a different carbo- or heterocyclic ring Introduction of conformational restrictions Synthesis of enantiomers Preparation of hydrolitically stable C-nucleosides Chemical Synthesis of Nucleoside Analogues covers all the major classes of nucleosides, including pronucleotides, C-nucleosides, carbanucleosides, and PNA monomers which have shown great promise as starting points for the synthesis of nucleoside analogues. The book also includes experimental procedures for key reactions related to the synthesis of nucleoside analogues, providing a valuable tool for the preparation of a number of different compounds. Throughout the book, chemical schemes and figures help readers better understand the chemical structures of nucleoside analogues and the methods used to synthesize them. Extensive references serve as a gateway to the growing body of original research studies and reviews in the field. Synthetically modified nucleosides have proven their value as therapeutic drugs, in particular as antiviral and antitumor agents. However, many of these nucleoside analogues have undesirable side effects. With Chemical Synthesis of Nucleoside Analogues as their guide, researchers have a new tool for synthesizing a new generation of nucleoside analogues that can be used as therapeutic drugs with fewer unwanted side effects.

Insilico Identification and Optimization of Natural Inhibitors for Drug Target sites in Cryptosporidium parvum

Insilico Identification and Optimization of Natural Inhibitors for Drug Target sites in Cryptosporidium parvum
Author: Dr. Pratibha Teotia
Publisher: Manojvm Publishing House
Total Pages:
Release:
Genre: Fiction
ISBN: 8194885973

Now day’s computer-aided drug design considered as a powerful method to design very specific lead compounds that can be developed as drug molecules. Using different in-silico tools, a target is selected and then its structure is defined and determined. After that new chemical/ synthetic compounds can be designed in-silico on the basis of combinatorial chemistry or chosen from an already available chemical library of molecules or library of molecules is generated from a subset of small molecules on the basis of docking and scoring against the particular target. In this study, I attempt to generate 2D QSAR model using small pIC50 values for thirty-eight benzoxazole derivatives binding with C. parvum IMPDH protein resulting correlation coefficient value R2/r2 is 0.7948. Docking results show that out of 38 benzoxazole derivatives, four compounds are most active. The present examination may give the data about potential derivatives of Benzoxazole as chemotherapeutic operators to battle against the expanding weight of Cryptosporidiosis infections.

Heterocycles from Carbohydrate Precursors

Heterocycles from Carbohydrate Precursors
Author: El Sayed H. El Ashry
Publisher: Springer Science & Business Media
Total Pages: 363
Release: 2007-07-30
Genre: Science
ISBN: 3540729569

With contributions by numerous experts

Nucleic Acids in Chemistry and Biology

Nucleic Acids in Chemistry and Biology
Author: G Michael Blackburn
Publisher: Royal Society of Chemistry
Total Pages: 503
Release: 2015-11-09
Genre: Science
ISBN: 1782625771

The structure, function and reactions of nucleic acids are central to molecular biology and are crucial for the understanding of complex biological processes involved. Revised and updated Nucleic Acids in Chemistry and Biology 3rd Edition discusses in detail, both the chemistry and biology of nucleic acids and brings RNA into parity with DNA. Written by leading experts, with extensive teaching experience, this new edition provides some updated and expanded coverage of nucleic acid chemistry, reactions and interactions with proteins and drugs. A brief history of the discovery of nucleic acids is followed by a molecularly based introduction to the structure and biological roles of DNA and RNA. Key chapters are devoted to the chemical synthesis of nucleosides and nucleotides, oligonucleotides and their analogues and to analytical techniques applied to nucleic acids. The text is supported by an extensive list of references, making it a definitive reference source. This authoritative book presents topics in an integrated manner and readable style. It is ideal for graduate and undergraduates students of chemistry and biochemistry, as well as new researchers to the field.

DNA Methylation and Cancer Therapy

DNA Methylation and Cancer Therapy
Author: Moshe Szyf
Publisher: Springer Science & Business Media
Total Pages: 264
Release: 2005-01-20
Genre: Medical
ISBN: 9780306478482

NA methylation has bewildered molecular biologists since Hotchkiss discovered it almost six decades ago (Hotchkiss RDJ. Biol Cem 1948; 175:315-332). The fact that the chemical structure of our D genome consists of two components that are covalently bound, the genetic information that is replicated by the DNA replication machinery ana DNA methylation that is maintainea by independent enzymatic machinery, has redictably stimulated the imagination and curiosity of generations of mo Edular biologists. An obvious question was whether DNA methylation was a bearer of additional information to the genetic information and what was the nature of this information? It was tempting to speculate that DNA me thylation applied some form of control over programming of the genome s expression profile. Once techniques to probe the methylation profile of whole genomes as well as specific genes became available, it became clear that DNA methylation patterns are gene and tissue specific and that patterns of gene expression correlate with patterns of methylation. DNA methylation pat terns emerged as the only component of the chemical structure of DNA that exhibited tissue and cell specificity. This data seemingly provided an attrac tively simple explanation for the longstanding dilemma of how could one identical genome manifest itself in so many different forms in multicellular organisms? The DNA methylation pattern has thus become the only known factor to confer upon DNA a unique cellular identity.

Modern Biocatalysis

Modern Biocatalysis
Author: Wolf-Dieter Fessner
Publisher: John Wiley & Sons
Total Pages: 406
Release: 2009-02-09
Genre: Science
ISBN: 9783527320714

Das Gesamtgebiet der Biokatalyse mit allen seinen Facetten -- Mikrobiologie, Enzymologie, Molekularbiologie, Strukturbiologie, organische Chemie -- wird in diesem interdisziplinär angelegten Werk beleuchtet; insbesondere geht es um enzymatische Katalysen und Ganzzell-Katalysen. Ein Schwerpunkt liegt dabei auf der Entwicklung hochselektiver, umweltfreundlicher Prozesse zur Synthese wichtiger Verbindungsklassen.