Different Routes to Ampholytic Polydehydroalanine: Orthogonal versus Simultaneous Deprotection.
Different Routes to Ampholytic Polydehydroalanine: Orthogonal versus Simultaneous Deprotection.
复制标题
两性聚脱氢丙氨酸的不同途径:正交脱保护与同时脱保护
DOI:
10.1002/marc.201800857
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发表时间:
2019
影响因子:
4.6
通讯作者:
F. H. Schacher
中科院分区:
文献类型:
--
作者:
J. Kruse;P. Biehl;F. H. Schacher
Polydehydroalanine (PDha) is a polyampholyte featuring both a –NH2and a –COOH in every repeat unit and with that presents a rather high charge density. The synthesis and polymerization of two monomers, benzyl 2‐tert‐butoxycarbonylaminoacrylate and methyl 2‐benzyloxycarbonylaminoacrylate is herein reported, which feature different protective groups and, after polymerization, the resulting PtBABA and PBOMA can be transformed into PDha using polymer‐analogous modification reactions. More important, the current choice of protective groups allows either simultaneous deprotection in one step in both cases, but also the orthogonal deprotection of either –NH2or –COOH moiety for PtBABA, given that appropriate conditions are chosen. The polymers are prepared using free radical polymerization and all (intermediate) polymeric materials are investigated using a combination of NMR spectroscopy and size exclusion chromatography.
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DOI:
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发表时间:
2007
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