Gary E. Martin
Encyclopedia
Gary Martin is an American
chemist
and expert in the fields of both NMR spectroscopy
and medicinal chemistry
. He is a distinguished fellow at the Merck Research Laboratories. He is also a photographer specializing in the capture of images of lighthouses, especially under conditions of extreme weather.,
. He was a Professor of Medicinal Chemistry at the University of Houston from 1975–1989 and the director of the University of Houston NMR
Facility between 1984-1989. He moved to the pharmaceutical industry in 1989 and worked at a number of pharmaceutical companies as described below. He has published more than 275 papers, invited reviews, and chapters and is a frequently invited lecturer at national and international NMR meetings.
Between 1989 and 1995 he worked at Burroughs Wellcome (later GlaxoSmithKline
) (see reference 3) and worked on the development of new one- and two-dimensional NMR experiments for the solution of complex structural and spectral assignment problems. He developed new methods for the acquisition of submicromole and sub-nanomole NMR data for molecular structure characterization, especially work involving inverse-detected heteronuclear shift correlation techniques. These efforts led to collaborative development with Nalorac Cryogenics Corp. to develop micro inverse detection probes which facilitated the acquisition of HMQC spectra on samples to the level of 0.05 µmole for small (200-500 Da) molecule NMR.
He moved to the Pharmacia
corporation between 1996–2003 and ran the Rapid Structure Characterization Group. When Pharmacia was acquired by Pfizer
, he served as the senior scientific consultant working on new methods development. He led the development of applications of unsymmetrical indirect covariance NMR, initially in an effort to eliminate artifacts and subsequently in the investigation of the mathematical combination of discretely-acquired 2D NMR data. The time savings for the latter was nearly a factor of 16 in time, with a 10-fold improvement in signal-to-noise ratios vs. directly acquiring an HSQC-TOCSY data set with the same sample. He conducted preliminary investigations into the utilization of indirect covariance NMR spectroscopy as an alternative means of evaluating NMR data for structure characterization and Computer-Assisted Structure Elucidation. He collaborated with a team of scientists at Advanced Chemistry Development
, ACD/Labs, led by Antony John Williams
, investigating the development of computational methods for automated structure verification and structure elucidation,,, He developed “accordion-optimized” long-range heteronuclear shift correlation methods to provide experimental access to small long-range heteronuclear couplings for the characterization of proton-“deficient” molecular structures, to experimentally access 4J heteronuclear couplings, to differentiate two-bond from three-bond long-range couplings to protonated carbons, to measure long-range heteronuclear couplings and to provide a reliable means of observing long-range proton-nitrogen correlations without concern for the variability of long-range proton nitrogen coupling constants.
He also collaborated on the development of a new generation of sub-micro inverse detection probes with Nalorac Cryogenics Corporation designed to allow heteronuclear shift correlation experiments to be performed at levels down to 0.01 µmole for small molecules. The collaboration extended to a new generation of cold metal (at temperatures of 8K) 3 mm micro inverse detection probes.
In 2006 he joined Schering-Plough
and was responsible for the chemical structure characterization of impurities and degradants of candidate drug molecules in support of chemical process research. Schering Plough was acquired by Merck Research Laboratories in 2009. During his time at Merck he has continued to explore the limits of detection for low level samples by heteronuclear 2D NMR using newly developed 1.7 mm Micro CryoProbe™ technology. He has developed, in collaboration with ACD/Labs, and Bruker
, unsymmetrical indirect covariance NMR spectroscopy, exploring the calculation of hyphenated heteronuclear 2D correlation spectra. He has also continued collaborative investigations in the area of Computer-Assisted Structure Elucidation (CASE) with ACD/Labs. He has also explored the use of unsymmetrical indirect covariance NMR processing methods to define 13C-15N and 13C-13C heteronuclear connectivity networks.
He has had a long-standing interest in heteronuclear NMR and 2D long-range heteronuclear shift correlation in particular. He was among the first to exploit natural abundance long-range 1H-15N heteronuclear shift correlation experiments, those early reports leading to hundreds of published reports that are the subject of multiple reviews and chapters., More recently, his research interests have also led to the development of unsymmetrical indirect covariance NMR processing methods that have the potential for significant spectrometer time savings when experimental access to hyphenated 2D NMR. These methods also provide access to 13C-15N Heteronuclear Single Quantum Coherence-Heteronuclear Multiple Bond Coherence (HSQC-HMBC) correlation data that are experimentally inaccessible at natural abundance, and to HSQC-ADEQUATE correlation plots that allow carbon-carbon connectivity networks of molecules to be mapped without having to resort to the highly insensitive 13C-13C INADEQUATE experiment.
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...
chemist
Chemist
A chemist is a scientist trained in the study of chemistry. Chemists study the composition of matter and its properties such as density and acidity. Chemists carefully describe the properties they study in terms of quantities, with detail on the level of molecules and their component atoms...
and expert in the fields of both NMR spectroscopy
NMR spectroscopy
Nuclear magnetic resonance spectroscopy, most commonly known as NMR spectroscopy, is a research technique that exploits the magnetic properties of certain atomic nuclei to determine physical and chemical properties of atoms or the molecules in which they are contained...
and medicinal chemistry
Medicinal chemistry
Medicinal chemistry and pharmaceutical chemistry are disciplines at the intersection of chemistry, especially synthetic organic chemistry, and pharmacology and various other biological specialties, where it is involved with design, chemical synthesis and development for market of pharmaceutical...
. He is a distinguished fellow at the Merck Research Laboratories. He is also a photographer specializing in the capture of images of lighthouses, especially under conditions of extreme weather.,
Career
Martin holds a B.S. in Pharmacy from the University of Pittsburgh and a Ph.D. degree in Medicinal Chemistry/Pharmaceutical Sciences from the University of KentuckyUniversity of Kentucky
The University of Kentucky, also known as UK, is a public co-educational university and is one of the state's two land-grant universities, located in Lexington, Kentucky...
. He was a Professor of Medicinal Chemistry at the University of Houston from 1975–1989 and the director of the University of Houston NMR
NMR
NMR may refer to:Applications of Nuclear Magnetic Resonance:* Nuclear magnetic resonance* NMR spectroscopy* Solid-state nuclear magnetic resonance* Protein nuclear magnetic resonance spectroscopy* Proton NMR* Carbon-13 NMR...
Facility between 1984-1989. He moved to the pharmaceutical industry in 1989 and worked at a number of pharmaceutical companies as described below. He has published more than 275 papers, invited reviews, and chapters and is a frequently invited lecturer at national and international NMR meetings.
Between 1989 and 1995 he worked at Burroughs Wellcome (later GlaxoSmithKline
GlaxoSmithKline
GlaxoSmithKline plc is a global pharmaceutical, biologics, vaccines and consumer healthcare company headquartered in London, United Kingdom...
) (see reference 3) and worked on the development of new one- and two-dimensional NMR experiments for the solution of complex structural and spectral assignment problems. He developed new methods for the acquisition of submicromole and sub-nanomole NMR data for molecular structure characterization, especially work involving inverse-detected heteronuclear shift correlation techniques. These efforts led to collaborative development with Nalorac Cryogenics Corp. to develop micro inverse detection probes which facilitated the acquisition of HMQC spectra on samples to the level of 0.05 µmole for small (200-500 Da) molecule NMR.
He moved to the Pharmacia
Pharmacia
Pharmacia was a pharmaceutical and biotechnological company in Sweden.-History:Pharmacia was founded in 1911 in Stockholm, Sweden by pharmacist Gustav Felix Grönfeldt at the Elgen Pharmacy. The company is named after the Greek word φαρμακεία, transliterated pharmakeia, which means 'sorcery'...
corporation between 1996–2003 and ran the Rapid Structure Characterization Group. When Pharmacia was acquired by Pfizer
Pfizer
Pfizer, Inc. is an American multinational pharmaceutical corporation. The company is based in New York City, New York with its research headquarters in Groton, Connecticut, United States...
, he served as the senior scientific consultant working on new methods development. He led the development of applications of unsymmetrical indirect covariance NMR, initially in an effort to eliminate artifacts and subsequently in the investigation of the mathematical combination of discretely-acquired 2D NMR data. The time savings for the latter was nearly a factor of 16 in time, with a 10-fold improvement in signal-to-noise ratios vs. directly acquiring an HSQC-TOCSY data set with the same sample. He conducted preliminary investigations into the utilization of indirect covariance NMR spectroscopy as an alternative means of evaluating NMR data for structure characterization and Computer-Assisted Structure Elucidation. He collaborated with a team of scientists at Advanced Chemistry Development
Advanced Chemistry Development
ACD/Labs Advanced Chemistry Development, Inc., develops desktop and enterprise software solutions for chemical, biochemical, and pharmaceutical research and development.-Areas of expertise:...
, ACD/Labs, led by Antony John Williams
Antony John Williams
Antony John Williams, is a British chemist and expert in the fields of both nuclear magnetic resonance spectroscopy and cheminformatics at the Royal Society of Chemistry. He is the founder of the ChemSpider website that was purchased by the Royal Society of Chemistry in May 2009...
, investigating the development of computational methods for automated structure verification and structure elucidation,,, He developed “accordion-optimized” long-range heteronuclear shift correlation methods to provide experimental access to small long-range heteronuclear couplings for the characterization of proton-“deficient” molecular structures, to experimentally access 4J heteronuclear couplings, to differentiate two-bond from three-bond long-range couplings to protonated carbons, to measure long-range heteronuclear couplings and to provide a reliable means of observing long-range proton-nitrogen correlations without concern for the variability of long-range proton nitrogen coupling constants.
He also collaborated on the development of a new generation of sub-micro inverse detection probes with Nalorac Cryogenics Corporation designed to allow heteronuclear shift correlation experiments to be performed at levels down to 0.01 µmole for small molecules. The collaboration extended to a new generation of cold metal (at temperatures of 8K) 3 mm micro inverse detection probes.
In 2006 he joined Schering-Plough
Schering-Plough
Schering-Plough Corporation was a United States-based pharmaceutical company. It was founded in 1851 by Ernst Christian Friedrich Schering as Schering AG in Germany. In 1971, the Schering Corporation merged with Plough to form Schering-Plough. On November 4, 2009 Merck & Co...
and was responsible for the chemical structure characterization of impurities and degradants of candidate drug molecules in support of chemical process research. Schering Plough was acquired by Merck Research Laboratories in 2009. During his time at Merck he has continued to explore the limits of detection for low level samples by heteronuclear 2D NMR using newly developed 1.7 mm Micro CryoProbe™ technology. He has developed, in collaboration with ACD/Labs, and Bruker
Bruker
Bruker is a leading provider of high-performance scientific instruments and solutions for molecular and materials research, as well as for industrial and applied analysis...
, unsymmetrical indirect covariance NMR spectroscopy, exploring the calculation of hyphenated heteronuclear 2D correlation spectra. He has also continued collaborative investigations in the area of Computer-Assisted Structure Elucidation (CASE) with ACD/Labs. He has also explored the use of unsymmetrical indirect covariance NMR processing methods to define 13C-15N and 13C-13C heteronuclear connectivity networks.
Research Interests
His ongoing research interests have centered on the development of new NMR methods for the characterization of impurities and degradants of pharmaceuticals focusing on the exploration of new NMR probe technologies for the characterization of extremely small samples using heteronuclear 2D-NMR methods. His interests in this area were pivotal in the development of 3 mm and 1.7 mm probe technologies and he was also an early proponent of cryogenic probe capabilities.,He has had a long-standing interest in heteronuclear NMR and 2D long-range heteronuclear shift correlation in particular. He was among the first to exploit natural abundance long-range 1H-15N heteronuclear shift correlation experiments, those early reports leading to hundreds of published reports that are the subject of multiple reviews and chapters., More recently, his research interests have also led to the development of unsymmetrical indirect covariance NMR processing methods that have the potential for significant spectrometer time savings when experimental access to hyphenated 2D NMR. These methods also provide access to 13C-15N Heteronuclear Single Quantum Coherence-Heteronuclear Multiple Bond Coherence (HSQC-HMBC) correlation data that are experimentally inaccessible at natural abundance, and to HSQC-ADEQUATE correlation plots that allow carbon-carbon connectivity networks of molecules to be mapped without having to resort to the highly insensitive 13C-13C INADEQUATE experiment.