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Lithium hexamethyldisilazide initiated superfast ring opening polymerization of alpha-amino acid N-carboxyanhydrides
by
Zhang, Danfeng
, Ma, Pengcheng
, Wu, Yueming
, Zhou, Ruiyi
, Liu, Runhui
, Hua, Lei
in
Acids
/ Amines
/ Amines - chemistry
/ Amino acids
/ Amino Acids - chemistry
/ Anhydrides - chemistry
/ Anti-Bacterial Agents - chemical synthesis
/ Anti-Bacterial Agents - chemistry
/ Anti-Bacterial Agents - pharmacology
/ Chemical synthesis
/ Drug Resistance, Multiple, Bacterial
/ Initiators
/ Lithium
/ Lithium Compounds - chemistry
/ Methicillin-Resistant Staphylococcus aureus - drug effects
/ Molecular weight
/ Molecular weight distribution
/ Organosilicon Compounds - chemistry
/ Peptides - chemical synthesis
/ Peptides - chemistry
/ Peptides - pharmacology
/ Polymerization
/ Polypeptides
/ Pseudomonas aeruginosa - drug effects
/ Ring opening polymerization
/ Side reactions
/ Silanes - chemistry
2018
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Lithium hexamethyldisilazide initiated superfast ring opening polymerization of alpha-amino acid N-carboxyanhydrides
by
Zhang, Danfeng
, Ma, Pengcheng
, Wu, Yueming
, Zhou, Ruiyi
, Liu, Runhui
, Hua, Lei
in
Acids
/ Amines
/ Amines - chemistry
/ Amino acids
/ Amino Acids - chemistry
/ Anhydrides - chemistry
/ Anti-Bacterial Agents - chemical synthesis
/ Anti-Bacterial Agents - chemistry
/ Anti-Bacterial Agents - pharmacology
/ Chemical synthesis
/ Drug Resistance, Multiple, Bacterial
/ Initiators
/ Lithium
/ Lithium Compounds - chemistry
/ Methicillin-Resistant Staphylococcus aureus - drug effects
/ Molecular weight
/ Molecular weight distribution
/ Organosilicon Compounds - chemistry
/ Peptides - chemical synthesis
/ Peptides - chemistry
/ Peptides - pharmacology
/ Polymerization
/ Polypeptides
/ Pseudomonas aeruginosa - drug effects
/ Ring opening polymerization
/ Side reactions
/ Silanes - chemistry
2018
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Lithium hexamethyldisilazide initiated superfast ring opening polymerization of alpha-amino acid N-carboxyanhydrides
by
Zhang, Danfeng
, Ma, Pengcheng
, Wu, Yueming
, Zhou, Ruiyi
, Liu, Runhui
, Hua, Lei
in
Acids
/ Amines
/ Amines - chemistry
/ Amino acids
/ Amino Acids - chemistry
/ Anhydrides - chemistry
/ Anti-Bacterial Agents - chemical synthesis
/ Anti-Bacterial Agents - chemistry
/ Anti-Bacterial Agents - pharmacology
/ Chemical synthesis
/ Drug Resistance, Multiple, Bacterial
/ Initiators
/ Lithium
/ Lithium Compounds - chemistry
/ Methicillin-Resistant Staphylococcus aureus - drug effects
/ Molecular weight
/ Molecular weight distribution
/ Organosilicon Compounds - chemistry
/ Peptides - chemical synthesis
/ Peptides - chemistry
/ Peptides - pharmacology
/ Polymerization
/ Polypeptides
/ Pseudomonas aeruginosa - drug effects
/ Ring opening polymerization
/ Side reactions
/ Silanes - chemistry
2018
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Lithium hexamethyldisilazide initiated superfast ring opening polymerization of alpha-amino acid N-carboxyanhydrides
Journal Article
Lithium hexamethyldisilazide initiated superfast ring opening polymerization of alpha-amino acid N-carboxyanhydrides
2018
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Overview
Polypeptides have broad applications and can be prepared via ring-opening polymerization of α-amino acid N-carboxyanhydrides (NCAs). Conventional initiators, such as primary amines, give slow NCA polymerization, which requires multiple days to reach completion and can result in substantial side reactions, especially for very reactive NCAs. Moreover, current NCA polymerizations are very sensitive to moisture and must typically be conducted in a glove box. Here we show that lithium hexamethyldisilazide (LiHMDS) initiates an extremely rapid NCA polymerization process that is completed within minutes or hours and can be conducted in an open vessel. Polypeptides with variable chain length (DP = 20-1294) and narrow molecular weight distribution (Mw/Mn = 1.08-1.28) were readily prepared with this approach. Mechanistic studies support an anionic ring opening polymerization mechanism. This living NCA polymerization method allowed rapid synthesis of polypeptide libraries for high-throughput functional screening.
Publisher
Nature Publishing Group,Nature Publishing Group UK,Nature Portfolio
Subject
/ Amines
/ Anti-Bacterial Agents - chemical synthesis
/ Anti-Bacterial Agents - chemistry
/ Anti-Bacterial Agents - pharmacology
/ Drug Resistance, Multiple, Bacterial
/ Lithium
/ Lithium Compounds - chemistry
/ Methicillin-Resistant Staphylococcus aureus - drug effects
/ Molecular weight distribution
/ Organosilicon Compounds - chemistry
/ Peptides - chemical synthesis
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