Authors: Potowski, Marco
Kunig, Verena B. K.
Eberlein, Lukas
Vakalopoulos, Alexandros
Kast, Stefan M.
Brunschweiger, Andreas
Title: Chemically stabilized DNA barcodes for DNA-encoded chemistry
Language (ISO): en
Abstract: DNA-encoded compound libraries are a widely used small molecule screening technology. One important aim in library design is the coverage of chemical space through structurally diverse molecules. Yet, the chemical reactivity of native DNA barcodes limits the toolbox of reactions for library design. Substituting the chemically vulnerable purines by 7-deazaadenine, which exhibits tautomerization stability similar to natural adenine with respect to the formation of stable Watson–Crick pairs, yielded ligation-competent, amplifiable, and readable DNA barcodes for encoded chemistry with enhanced stability against protic acid- and metal ion-promoted depurination. The barcode stability allowed for straightforward translation of 16 exemplary reactions that included isocyanide multicomponent reactions, acid-promoted Pictet–Spengler and Biginelli reactions, and metal-promoted pyrazole syntheses on controlled pore glass-coupled barcodes for diverse DEL design. The Boc protective group of reaction products offered a convenient handle for encoded compound purification.
Subject Headings: DNA-encoded chemistry
DNA-encoded libraries
Multicomponent reactions
Solid-phase chemistry
Stabilized DNA barcodes
Issue Date: 2021-06-21
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Appears in Collections:Chemische Biologie

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