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Sherer EC, Lee CH, Shpungin J, Cuff JF, Da C, Ball R, Bach R, Crespo A, Gong X, Welch CJ. Systematic approach to conformational sampling for assigning absolute configuration using vibrational circular dichroism. J Med Chem 2014; 57:477-94. [PMID: 24383452 DOI: 10.1021/jm401600u] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Systematic methods that speed-up the assignment of absolute configuration using vibrational circular dichrosim (VCD) and simplify its usage will advance this technique into a robust platform technology. Applying VCD to pharmaceutically relevant compounds has been handled in an ad hoc fashion, relying on fragment analysis and technical shortcuts to reduce the computational time required. We leverage a large computational infrastructure to provide adequate conformational exploration which enables an accurate assignment of absolute configuration. We describe a systematic approach for rapid calculation of VCD/IR spectra and comparison with corresponding measured spectra and apply this approach to assign the correct stereochemistry of nine test cases. We suggest moving away from the fragment approach when making VCD assignments. In addition to enabling faster and more reliable VCD assignments of absolute configuration, the ability to rapidly explore conformational space and sample conformations of complex molecules will have applicability in other areas of drug discovery.
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Affiliation(s)
- Edward C Sherer
- Merck Research Laboratories, Merck & Co., Inc., PO Box 2000, Rahway, New Jersey 07065, United States
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Gianotti M, Botta M, Brough S, Carletti R, Castiglioni E, Corti C, Dal-Cin M, Delle Fratte S, Korajac D, Lovric M, Merlo G, Mesic M, Pavone F, Piccoli L, Rast S, Roscic M, Sava A, Smehil M, Stasi L, Togninelli A, Wigglesworth MJ. Novel Spirotetracyclic Zwitterionic Dual H1/5-HT2A Receptor Antagonists for the Treatment of Sleep Disorders. J Med Chem 2010; 53:7778-95. [DOI: 10.1021/jm100856p] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Massimo Gianotti
- Neurosciences CEDD, GlaxoSmithKline, Medicines Research Centre, Via A. Fleming 4, 37135 Verona, Italy
| | - Maurizio Botta
- Dipartimento Farmaco Chimico Tecnologico, Universitá degli Studi di Siena, Via Aldo Moro 2, I-53100 Siena, Italy
| | - Stephen Brough
- GlaxoSmithKline, New Frontiers Science Park, Third Avenue, Harlow, Essex, CM19 5AW, U.K
| | - Renzo Carletti
- Neurosciences CEDD, GlaxoSmithKline, Medicines Research Centre, Via A. Fleming 4, 37135 Verona, Italy
| | - Emiliano Castiglioni
- Neurosciences CEDD, GlaxoSmithKline, Medicines Research Centre, Via A. Fleming 4, 37135 Verona, Italy
| | - Corrado Corti
- Neurosciences CEDD, GlaxoSmithKline, Medicines Research Centre, Via A. Fleming 4, 37135 Verona, Italy
| | - Michele Dal-Cin
- Neurosciences CEDD, GlaxoSmithKline, Medicines Research Centre, Via A. Fleming 4, 37135 Verona, Italy
| | - Sonia Delle Fratte
- Neurosciences CEDD, GlaxoSmithKline, Medicines Research Centre, Via A. Fleming 4, 37135 Verona, Italy
| | - Denana Korajac
- Integrated Research Unit, IRU Chemistry, Prilaz Baruna Filipovica 29, 10000 Zagreb, Croatia
| | - Marija Lovric
- Integrated Research Unit, IRU Chemistry, Prilaz Baruna Filipovica 29, 10000 Zagreb, Croatia
| | - Giancarlo Merlo
- Neurosciences CEDD, GlaxoSmithKline, Medicines Research Centre, Via A. Fleming 4, 37135 Verona, Italy
| | - Milan Mesic
- Integrated Research Unit, IRU Chemistry, Prilaz Baruna Filipovica 29, 10000 Zagreb, Croatia
| | - Francesca Pavone
- Neurosciences CEDD, GlaxoSmithKline, Medicines Research Centre, Via A. Fleming 4, 37135 Verona, Italy
| | - Laura Piccoli
- Neurosciences CEDD, GlaxoSmithKline, Medicines Research Centre, Via A. Fleming 4, 37135 Verona, Italy
| | - Slavko Rast
- Integrated Research Unit, IRU Chemistry, Prilaz Baruna Filipovica 29, 10000 Zagreb, Croatia
| | - Maja Roscic
- Integrated Research Unit, IRU Chemistry, Prilaz Baruna Filipovica 29, 10000 Zagreb, Croatia
| | - Anna Sava
- Neurosciences CEDD, GlaxoSmithKline, Medicines Research Centre, Via A. Fleming 4, 37135 Verona, Italy
| | - Mario Smehil
- Integrated Research Unit, IRU Chemistry, Prilaz Baruna Filipovica 29, 10000 Zagreb, Croatia
| | - Luigi Stasi
- Neurosciences CEDD, GlaxoSmithKline, Medicines Research Centre, Via A. Fleming 4, 37135 Verona, Italy
| | - Andrea Togninelli
- Dipartimento Farmaco Chimico Tecnologico, Universitá degli Studi di Siena, Via Aldo Moro 2, I-53100 Siena, Italy
| | - Mark J. Wigglesworth
- GlaxoSmithKline, New Frontiers Science Park, Third Avenue, Harlow, Essex, CM19 5AW, U.K
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