Document Detail


Conversion of nocathiacin I to nocathiacin acid by a mild and selective cleavage of dehydroalanine.
MedLine Citation:
PMID:  17705543     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Thiazolyl peptide antibiotic nocathiacin I (1) was converted to nocathiacin acid (4) in high yield by treatment with trifluoroacetic anhydride and pyridine in THF at room temperature. Two equipotent water-soluble amide analogues of nocathiacin I were readily prepared from this important and versatile carboxylic acid intermediate under mild peptide coupling conditions. The present method is useful for chemical derivatization of complex natural products that contain C-terminal dehydroalanine.
Authors:
Libo Xu; Amy K Farthing; Yao-Jun Shi; Peter T Meinke; Kun Liu
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Publication Detail:
Type:  Journal Article     Date:  2007-08-18
Journal Detail:
Title:  The Journal of organic chemistry     Volume:  72     ISSN:  0022-3263     ISO Abbreviation:  J. Org. Chem.     Publication Date:  2007 Sep 
Date Detail:
Created Date:  2007-09-07     Completed Date:  2007-10-16     Revised Date:  2010-05-19    
Medline Journal Info:
Nlm Unique ID:  2985193R     Medline TA:  J Org Chem     Country:  United States    
Other Details:
Languages:  eng     Pagination:  7447-50     Citation Subset:  IM    
Affiliation:
Merck Research Laboratories, Rahway, NJ 07065, USA. libo_xu@merck.com
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MeSH Terms
Descriptor/Qualifier:
Alanine / analogs & derivatives*,  chemistry
Carboxylic Acids / chemical synthesis*
Peptides / chemistry*
Peptides, Cyclic / chemical synthesis*
Thiazoles / chemical synthesis*
Chemical
Reg. No./Substance:
0/Carboxylic Acids; 0/Peptides; 0/Peptides, Cyclic; 0/Thiazoles; 0/nocathiacin I; 0/nocathiacin acid; 1948-56-7/dehydroalanine; 56-41-7/Alanine

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