Download e-book for kindle: Amino Acids, Peptides and Proteins in Organic Chemistry: by Andrew B. Hughes

By Andrew B. Hughes

ISBN-10: 3527321039

ISBN-13: 9783527321032

This is the fourth of 5 books within the Amino Acids, Peptides and Proteins in natural Synthesis series. 

Closing a niche within the literature, this can be the single sequence to hide this crucial subject in natural and biochemistry. Drawing upon the mixed services of the overseas "who's who" in amino acid study, those volumes characterize a true benchmark for amino acid chemistry, supplying a finished dialogue of the incidence, makes use of and functions of amino acids and, through extension, their polymeric types, peptides and proteins.

The functional worth of every quantity is heightened by way of the inclusion of experimental procedures.

 

The five volumes hide the subsequent topics:

Volume 1: Origins and Synthesis of Amino Acids

Volume 2: converted Amino Acids, Organocatalysis and Enzymes

Volume three: construction Blocks, Catalysis and Coupling Chemistry

Volume four: safety Reactions, Medicinal Chemistry, Combinatorial Synthesis

Volume five: research and serve as of Amino Acids and Peptides

 

The fourth quantity during this sequence is dependent in 3 major sections. the 1st part is set defense reactions and amino acid dependent peptidomimetics. the second one, and such a lot wide, half is dedicated to the medicinal chemistry of amino acids. It comprises, between others, the chemistry of alpha- and beta amino acids, peptide medicines, and advances in N- and O-glycopeptide synthesis. the ultimate half offers with amino acids in combinatorial synthesis. tools, equivalent to phage show, library peptide synthesis, and computational layout are described.

 

Originally deliberate as a six quantity sequence, Amino Acids, Peptides and Proteins in natural Chemistry now completes with 5 volumes yet is still entire in either scope and coverage.

Further information regarding the five quantity Set and buying information might be seen here.

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Read Online or Download Amino Acids, Peptides and Proteins in Organic Chemistry: Volume 4 - Protection Reactions, Medicinal Chemistry, Combinatorial Synthesis (Amino Acids, Peptides and Proteins in Organic Chemistry (VCH)) PDF

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Extra resources for Amino Acids, Peptides and Proteins in Organic Chemistry: Volume 4 - Protection Reactions, Medicinal Chemistry, Combinatorial Synthesis (Amino Acids, Peptides and Proteins in Organic Chemistry (VCH))

Example text

Therefore, a wide variety of urethanes can be prepared by changing the alcohol component. Indeed, the properties of Na-urethane-protected amino acids, such as stability, solubility, methods of cleavage, and reactivity, depend on the nature of the alcohol component of the urethane segment. Hence, in this treatise, the important urethanetype protections are presented according to the structure of the alcohol component. 1 Benzyloxycarbonyl (Cbz or Z) Group Since its introduction, the Z group has been the most widely employed Na protection for peptide synthesis preferably for solution-phase synthesis.

When thioanisole is added, deprotection takes place through a SN2 mechanism with direct formation of the tert-butyl derivative of thioanisole. Hence no potential alkylating agents are formed. Deblocking in solution as well as on solid supports is carried out by using neat TFA or TFA in CH2Cl2 in the presence of a variety of scavengers [103]. A mixture of TFA and phenol/ p-cresol and TFA in H2O/DCM/AcOH can selectively remove the Boc group in the presence of acid sensitive O-silyl protections such as tert-butyldimethylsilyl (TBDMS) [104].

38). N-Methylmorpholine (NMM) is specifically used as base in this reaction since unlike most of the tertiary amines, it does not catalyze polymerization of the NCAs. Boc-NCAs 78 are prepared by using Boc2O. On the other hand, Trt-protected NCAs 79 can be obtained directly from Na-Trt-amino acids by treatment with triphosgene [123]. 38 Protection of NCAs. 4 Na,Na-bis-Protected Amino Acids Double protection of the nitrogen of the a-amino group is occasionally required to avoid side-reactions arising from the acidic -NH proton of the urethane linkage of Na-protected amino acids/peptides.

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Amino Acids, Peptides and Proteins in Organic Chemistry: Volume 4 - Protection Reactions, Medicinal Chemistry, Combinatorial Synthesis (Amino Acids, Peptides and Proteins in Organic Chemistry (VCH)) by Andrew B. Hughes


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