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Related Experiment Video

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High-yield and high-purity amide bond formation using DMTMM PF6 for DNA-encoded libraries.

Takumi Hosozawa1, Masatoshi Niwa1, Hisayuki Takeuchi1

  • 1Pharmaceutical Research Department, Chemical Research Laboratories, Nissan Chemical Corporation, 10-1, Tsuboi-Nishi 2-chome, Funabashi, Chiba, Japan.

Bioorganic & Medicinal Chemistry Letters
|July 2, 2024
PubMed
Summary

DMTMM PF6 enhances DNA amidation reactions, achieving higher yields than other reagents, especially for difficult compounds. This improves DNA-encoded library synthesis and expands available chemical building blocks.

Keywords:
Amidation reactionDMTMM PF(6)DNA-encoded libraries (DELs)Sterically hindered amines and carboxylic acidson-DNA

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Area of Science:

  • Chemical Synthesis
  • Organic Chemistry
  • Biotechnology

Background:

  • Amidation reactions are crucial for synthesizing DNA-encoded libraries.
  • Existing methods like HATU and DMTMM Cl have limitations with sterically hindered substrates.
  • Efficient on-DNA amidation is key for expanding molecular diversity in libraries.

Purpose of the Study:

  • To evaluate the efficacy of DMTMM PF6 for improving on-DNA amidation reactions.
  • To compare the performance of DMTMM PF6 against HATU and DMTMM Cl.
  • To demonstrate the utility of DMTMM PF6 for synthesizing high-purity DNA-encoded libraries.

Main Methods:

  • On-DNA amidation reactions were performed using DMTMM PF6.
  • Comparative analysis was conducted using HATU and DMTMM Cl as controls.
  • Sterically hindered amines and carboxylic acids were employed as challenging substrates.

Main Results:

  • DMTMM PF6 exhibited significantly higher conversion rates compared to HATU and DMTMM Cl.
  • The reagent effectively facilitated amidation with sterically hindered building blocks.
  • High-purity DNA-encoded libraries were synthesized efficiently using the developed method.

Conclusions:

  • DMTMM PF6 is a superior reagent for on-DNA amidation, particularly for challenging substrates.
  • This method expands the scope of building blocks usable in DNA-encoded library synthesis.
  • The improved efficiency and purity facilitate the creation of more diverse and complex chemical libraries.