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Wang H, Su L, Li R, Zhang S, Fan J, Zhang F, Nguyen TP, Wooley KL. Polyphosphoramidates That Undergo Acid-Triggered Backbone Degradation. ACS Macro Lett 2017; 6:219-223. [PMID: 35650917 DOI: 10.1021/acsmacrolett.6b00966] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The direct and facile synthesis of polyphosphoramidates (PPAs) with acid-labile phosphoramidate backbone linkages are reported, together with demonstration of their hydrolytic degradability, evaluated under acidic conditions. The introduction of acid-labile linkages along the polymer backbone led to rapid degradation of the polymer backbone dependent upon the environmental stimuli. An oxazaphospholidine monomer bearing a phosphoramidate linkage was designed and synthesized to afford the PPAs via organobase-catalyzed ring-opening polymerization in a controlled manner. The hydrolytic degradation of the PPAs was studied, revealing breakdown of the polymer backbone through cleavage of the phosphoramidate linkages under acidic conditions.
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Affiliation(s)
- Hai Wang
- Departments of Chemistry, Chemical Engineering, and Materials Science and Engineering, Texas A&M University, College Station, Texas 77842, United States
| | - Lu Su
- Departments of Chemistry, Chemical Engineering, and Materials Science and Engineering, Texas A&M University, College Station, Texas 77842, United States
| | - Richen Li
- Departments of Chemistry, Chemical Engineering, and Materials Science and Engineering, Texas A&M University, College Station, Texas 77842, United States
| | - Shiyi Zhang
- Departments of Chemistry, Chemical Engineering, and Materials Science and Engineering, Texas A&M University, College Station, Texas 77842, United States
| | - Jingwei Fan
- Departments of Chemistry, Chemical Engineering, and Materials Science and Engineering, Texas A&M University, College Station, Texas 77842, United States
| | - Fuwu Zhang
- Departments of Chemistry, Chemical Engineering, and Materials Science and Engineering, Texas A&M University, College Station, Texas 77842, United States
| | - Tan P. Nguyen
- Departments of Chemistry, Chemical Engineering, and Materials Science and Engineering, Texas A&M University, College Station, Texas 77842, United States
| | - Karen L. Wooley
- Departments of Chemistry, Chemical Engineering, and Materials Science and Engineering, Texas A&M University, College Station, Texas 77842, United States
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Lipase-catalyzed synthesis of acid-degradable poly(β-thioether ester) and poly(β-thioether ester-co-lactone) copolymers. POLYMER 2015. [DOI: 10.1016/j.polymer.2015.01.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Affiliation(s)
- Stéphanie Deshayes
- Department of Bioengineering; University of California; Los Angeles California 90095
| | - Andrea M. Kasko
- Department of Bioengineering; University of California; Los Angeles California 90095
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Binauld S, Stenzel MH. Acid-degradable polymers for drug delivery: a decade of innovation. Chem Commun (Camb) 2013; 49:2082-102. [DOI: 10.1039/c2cc36589h] [Citation(s) in RCA: 312] [Impact Index Per Article: 28.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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