SpiroChem AG:
Rosental area, WRO-1047-3
Mattenstrasse 24
4058 Basel, Switzerland


Tel: + 41 61 685 95 00
E-mail: contact@spirochem.com


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DEL-compatible scaffolds and capping agents

SpiroChem enables new chemical space for DNA-Encoded Libraries

We collaborate with the DEL community to continuously design and access novel chemical space and update our Scaffolds and Capping Agents Collections.

DEL-compatible scaffolds and capping agents
DEL-compatible scaffolds and capping agents

DNA-Encoded Libraries technology

DNA-Encoded Libraries technology (DELt) is a recent screening technique used in early discovery for target validation and hit identification. The technology, based on the linkage of a small molecule to an identifier DNA code, allows the screening of billions of compounds simultaneously.

About DEL

DEL include large collections of small molecules, individually coupled to DNA fragments, serving as amplifiable identification barcodes.
Typically, a core scaffold serves as a centerpiece and has 2 to 4 exit vectors for coupling capping agents (one of them being used to link the DNA fragment).

This means that around each core scaffold, small focused libraries of hundreds of compounds become available and are screened at the same time. The result is a direct read out of an early SAR (Structure-Activity Relationship), which is not possible in a standard HTS. It therefore generates hits that are already very advanced and hopefully require less follow-up chemistry.

Example of preparation of trifunctionalized rigid sp2-sp3 scaffolds by Photoinduced cyclopropanation of indoles with diazo compounds T. C. Fessard, K. Goncharenko, Q. Lefebvre, C. Salomé Chimia 2020, 74, 803-807

DEL-compatible scaffolds and capping agents

Scaffolds diversity

At SpiroChem, to expand the limits of the known and bring innovation to the DEL community, we design and prepare novel scaffolds with a particular attention to:

  • Diversity
  • Chemical space coverage
  • 3D shape
  • Conformational restriction (ex : bicycloalkane, BCPs, spiro derivative, fused cycles...)
  • Sp3-character
  • Number of exit vectors (3 to 4)
  • Protecting groups (DEL compatible, orthogonality)

Example of preparation of trifunctionalized rigid sp2-sp3 scaffolds by Photoinduced cyclopropanation of indoles with diazo compounds T. C. Fessard, K. Goncharenko, Q. Lefebvre, C. Salomé Chimia 2020, 74, 803-807

DEL-compatible scaffolds and capping agents

Capping agents selection

We offer a very diversified set of capping agents with valuable intrinsic properties. They enable fast generation of smart focused libraries of hundreds of compounds which, after testing, will provide valuable early SAR (Structure-Activity Relationship).

Thanks to the design of the core scaffolds and the selection of the capping agents, the generated hits have already advanced properties and hopefully will require less follow-up chemistry and optimization than hits obtained after classical HTS campaigns.

DEL-compatible scaffolds and capping agents

Let’s work together

  • Get access to our database of scaffolds and capping agents
  • Make your selection among our virtual database of derivatives (with high predicted success rate as their design is based on our in-house expertise)
  • Get support to create a new library with unexplored chemical space
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