Search Results - "Brown, Richard C. D."
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1
Flow Electrolysis Cells for the Synthetic Organic Chemistry Laboratory
Published in Chemical reviews (09-05-2018)“…Electrosynthesis has much to offer to the synthetic organic chemist. But in order to be widely accepted as a routine procedure in an organic synthesis…”
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2
N‑Heterocyclic Carbene-Mediated Microfluidic Oxidative Electrosynthesis of Amides from Aldehydes
Published in Organic letters (04-03-2016)“…A flow process for N-Heterocyclic Carbene (NHC)-mediated anodic oxidative amidation of aldehydes is described, employing an undivided microfluidic electrolysis…”
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3
N‑Heterocyclic Carbene-Mediated Oxidative Electrosynthesis of Esters in a Microflow Cell
Published in Organic letters (02-07-2015)“…An efficient N-heterocyclic carbene (NHC)-mediated oxidative esterification of aldehydes has been achieved in an undivided microfluidic electrolysis cell at…”
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4
A Nuclear Singlet Lifetime of More than One Hour in Room-Temperature Solution
Published in Angewandte Chemie International Edition (16-03-2015)“…Nuclear magnetic resonance (NMR) and magnetic resonance imaging (MRI) are supremely important techniques with numerous applications in almost all branches of…”
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5
Recycling and Imaging of Nuclear Singlet Hyperpolarization
Published in Journal of the American Chemical Society (03-04-2013)“…The strong enhancement of NMR signals achieved by hyperpolarization decays, at best, with a time constant of a few minutes. Here, we show that a combination of…”
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6
Chromophore Distortions in Photointermediates of Proteorhodopsin Visualized by Dynamic Nuclear Polarization-Enhanced Solid-State NMR
Published in Journal of the American Chemical Society (15-11-2017)“…Proteorhodopsin (PR) is the most abundant retinal protein on earth and functions as a light-driven proton pump. Despite extensive efforts, structural data for…”
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Structural Basis of the Green–Blue Color Switching in Proteorhodopsin as Determined by NMR Spectroscopy
Published in Journal of the American Chemical Society (17-12-2014)“…Proteorhodopsins (PRs) found in marine microbes are the most abundant retinal-based photoreceptors on this planet. PR variants show high levels of…”
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8
Total Synthesis of the Tetracyclic Lupin Alkaloid (+)-Allomatrine
Published in Organic letters (06-09-2013)“…(+)-Allomatrine (1) has been synthesized using an imino-aldol reaction and N-acyliminium cyclization as key steps. Strategically, use of the…”
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9
Total Syntheses of (−) Epilupinine and (−)-Tashiromine Using Imino-Aldol Reactions
Published in Organic letters (05-08-2011)“…Short routes to enantiomerically pure indolizidine and quinolizidine alkaloids have been developed using imino-aldol reactions of enolates derived from phenyl…”
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10
The synthesis of biologically active indolocarbazole natural products
Published in Natural product reports (20-10-2021)“…Covering: up to 2020The indolocarbazoles, in particular indolo[2,3- ]pyrrolo[3,4- ]carbazole derivatives, are an important class of natural products that…”
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11
Stereocontrolled Synthesis of (−)-Galanthamine
Published in Organic letters (10-05-2007)“…An enantioselective synthesis of (−)-galanthamine has been realized in 11 linear steps starting from isovanillin. A Mitsunobu aryl ether forming reaction was…”
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12
trans-2-Tritylcyclohexanol as a Chiral Auxiliary in Permanganate-Mediated Oxidative Cyclization of 2‑Methylenehept-5-enoates: Application to the Synthesis of trans-(+)-Linalool Oxide
Published in Organic letters (03-10-2014)“…The permanganate-mediated oxidative cyclization of a series of 2-methylenehept-5-eneoates bearing different chiral auxiliaries was investigated, leading to the…”
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13
Enlightening the photoactive site of channelrhodopsin-2 by DNP-enhanced solid-state NMR spectroscopy
Published in Proceedings of the National Academy of Sciences - PNAS (11-08-2015)“…Channelrhodopsin-2 fromChlamydomonas reinhardtiiis a light-gated ion channel. Over recent years, this ion channel has attracted considerable interest because…”
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14
Structure-Based Optimization of Nonquaternary Reactivators of Acetylcholinesterase Inhibited by Organophosphorus Nerve Agents
Published in Journal of medicinal chemistry (13-09-2018)“…Acetylcholinesterase (AChE), a key enzyme in the central and peripheral nervous systems, is the principal target of organophosphorus nerve agents. Quaternary…”
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15
A Resin-Linker-Vector Approach to Radiopharmaceuticals Containing 18F: Application in the Synthesis of O-(2-[18F]-Fluoroethyl)-L-tyrosine
Published in Chemistry : a European journal (28-01-2013)“…A Resin‐linker‐vector (RLV) strategy is described for the radiosynthesis of tracer molecules containing the radionuclide 18F, which releases the labelled…”
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16
A Microflow Electrolysis Cell for Laboratory Synthesis on the Multigram Scale
Published in Organic process research & development (16-10-2015)“…A large microflow electrolysis cell for laboratory synthesis on a multigram scale is described. It is based on two circular electrodes with a diameter of 149…”
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17
Oxidative Cyclization Reactions of Trienes and Dienynes: Total Synthesis of Membrarollin
Published in Journal of organic chemistry (06-02-2009)“…Trienes and dienynes containing one electron-deficient double bond were shown to undergo regio- and stereoselective oxidative cyclization in the presence of…”
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18
Long-Lived Nuclear Spin States in Methyl Groups and Quantum-Rotor-Induced Polarization
Published in Journal of the American Chemical Society (18-12-2013)“…Substances containing rapidly rotating methyl groups may exhibit long-lived states (LLSs) in solution, with relaxation times substantially longer than the…”
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19
Exploring Protein Structures by DNP-Enhanced Methyl Solid-State NMR Spectroscopy
Published in Journal of the American Chemical Society (18-12-2019)“…Although the rapid development of sensitivity-enhanced solid-state NMR (ssNMR) spectroscopy based on dynamic nuclear polarization (DNP) has enabled a broad…”
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20
Transition-Metal-Mediated Chemo- and Stereoselective Total Synthesis of (−)-Galanthamine
Published in Journal of organic chemistry (21-01-2022)“…An asymmetric synthetic route to (−)-galanthamine (1), a pharmacologically active Amaryllidaceae alkaloid used for the symptomatic treatment of early onset…”
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