Vinylpyridine as a Tunable Covalent Warhead Targeting C797 in EGFR

Area of Science:

• Medicinal Chemistry
• Organic Chemistry
• Drug Discovery

Background:

• Cysteine reactive covalent inhibitors are crucial for drug discovery.
• Traditional acrylamide warheads have limitations.
• Novel reactive groups are needed to expand inhibitor design.

Purpose of the Study:

• To design and synthesize novel covalent inhibitors of EGFR.
• To explore vinylpyridine as a new cysteine reactive warhead.
• To achieve tunable reactivity in covalent inhibitors.

Main Methods:

• Structure-based drug design was employed.
• Synthesis of quinazoline-containing vinylpyridine derivatives.
• Evaluation of EGFR inhibitory activity, kinase selectivity, and reactivity.

Main Results:

• Compound 6, a vinylpyridine derivative, was identified as a starting point.
• Substituted vinyl compound 12 demonstrated high EGFR potency and kinase selectivity.
• Compound 12 exhibited significantly reduced reactivity compared to compound 6.

Conclusions:

• Vinylpyridines represent a viable alternative to acrylamide warheads for cysteine-reactive covalent inhibitors.
• Tunable reactivity of vinylpyridines can be achieved through chemical modification.
• This study expands the toolkit for designing targeted covalent inhibitors.