Journal
ORGANIC LETTERS
Volume 15, Issue 24, Pages 6238-6241Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ol4030919
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Funding
- COST action [CM1005]
- MICINN (Spain) [CONSOLIDER INGENIO CSD-2010-00065]
- OVA [PROMETEO 2011/008]
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A cyclopeptide-based anion receptor containing alternating 6-aminopicolinic acid and substituted (4R)-4-aminoproline subunits with appended beta-alanine residues binds sulfate anions in water. Importantly, appreciable sulfate binding is even observed in phosphate buffer, hence in the presence of anions of similar structure but with a different degree of protonation. The cause for the high selectivity of this receptor is related to the mode of action of the sulfate-binding protein.
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