Synthesis of the Vancomycin CD and DE Ring Systems
摘要:
Full details of the synthesis of the fully substituted vancomycin CD and DE ring systems are described and a potential solution to the control of the atropisomer stereochemistry is defined.
Metagenome‐Guided Analogue Synthesis Yields Improved Gram‐Negative‐Active Albicidin‐ and Cystobactamid‐Type Antibiotics
作者:Zongqiang Wang、Amanda Kasper、Rabia Mehmood、Melinda Ternei、Shaogang Li、Joel S. Freundlich、Sean F. Brady
DOI:10.1002/anie.202104874
日期:2021.10.4
products are a major source of new antibiotics. Here we utilize biosynthetic instructions contained within metagenome-derived congener biosynthetic gene clusters (BGCs) to guide the synthesis of improved antibiotic analogues. Albicidin and cystobactamid are the first members of a new class of broad-spectrum ρ-aminobenzoic acid (PABA)-based antibiotics. Our search for PABA-specific adenylation domain sequences
Prebiotic Synthesis of <i>N-</i>Formylaminonitriles and Derivatives in Formamide
作者:Nicholas J. Green、David A. Russell、Sasha H. Tanner、John D. Sutherland
DOI:10.1021/jacs.2c13306
日期:2023.5.17
prebiotic source of aminoacid derivatives. Alkaline processing of N-formylaminonitriles proceeds with hydration at the nitrile group faster than deformylation, protecting aminonitrile derivatives from reversion of the Strecker condensation equilibrium during hydration/hydrolysis and furnishing mixtures of N-formylated and unformylated aminoacid derivatives. Furthermore, the facile synthesis of N-formyldehydroalanine
the substrate. Specifically, instead of canonical hydroxylation, these enzymes can catalyze non-native nitrilegroup installation when an azido group is introduced. The reaction is likely to proceed through C-H bond activation by an Fe(IV)-oxo species, followed by azido-directed C≡N bond formation. These results offer a unique opportunity to investigate and expand the reaction repertoire of Fe/2OG enzymes
Synthesis of the Vancomycin CD and DE Ring Systems
作者:Dale L. Boger、Robert M. Borzilleri、Seiji Nukui、Richard T. Beresis
DOI:10.1021/jo970560p
日期:1997.7.1
Full details of the synthesis of the fully substituted vancomycin CD and DE ring systems are described and a potential solution to the control of the atropisomer stereochemistry is defined.