Exploring aromatic chemical space with NEAT: novel and electronically equivalent aromatic template |
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Authors: | Tu Meihua Rai Brajesh K Mathiowetz Alan M Didiuk Mary Pfefferkorn Jeffrey A Guzman-Perez Angel Benbow John Guimarães Cristiano R W Mente Scot Hayward Matthew M Liras Spiros |
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Affiliation: | Pfizer Worldwide Research and Development, 620 Memorial Drive, Cambridge, Massachusetts 02139, USA. meihua.tu@pfizer.com |
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Abstract: | In this paper, we describe a lead transformation tool, NEAT (Novel and Electronically equivalent Aromatic Template), which can help identify novel aromatic rings that are estimated to have similar electrostatic potentials, dipoles, and hydrogen bonding capabilities to a query template; hence, they may offer similar bioactivity profiles. In this work, we built a comprehensive heteroaryl database, and precalculated high-level quantum mechanical (QM) properties, including electrostatic potential charges, hydrogen bonding ability, dipole moments, chemical reactivity, and othe properties. NEAT bioisosteric similarities are based on the electrostatic potential surface calculated by Brood, using the precalculated QM ESP charges and other QM properties. Compared with existing commercial lead transformation software, (1) NEAT is the only one that covers the comprehensive heteroaryl chemical space, and (2) NEAT offers a better characterization of novel aryl cores by using high-evel QM properties that are relevant to molecular interactions. NEAT provides unique value to medicinal chemists quickly exploring the largely uncharted aromatic chemical space, and one successful example of its application is discussed herein. |
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