Search Results - "RONG SHENG YANG"
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1
Engineering Hydroxylase Activity, Selectivity, and Stability for a Scalable Concise Synthesis of a Key Intermediate to Belzutifan
Published in Angewandte Chemie International Edition (22-03-2024)“…Biocatalytic oxidations are an emerging technology for selective C−H bond activation. While promising for a range of selective oxidations, practical use of…”
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2
Preparation, mechanical and thermal properties of functionalized graphene/polyimide nanocomposites
Published in Composites. Part A, Applied science and manufacturing (01-09-2012)“…Graphene oxide sheets with isocyanate functional groups (GONCO) were firstly synthesized and functionalized graphene/polyimide (FGS/PI) nanocomposites were…”
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3
Rapid Characterization of Insulin Modifications and Sequence Variations by Proteinase K Digestion and UHPLC-ESI-MS
Published in Journal of the American Society for Mass Spectrometry (01-05-2018)“…Discovery of novel insulin analogs as therapeutics has remained an active area of research. Compared with native human insulin, insulin analog molecules…”
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4
Unexpected Propargylic Retro-Brook Rearrangements in Alkynes
Published in Journal of organic chemistry (16-08-2019)“…Retro-Brook rearrangements refer to the intramolecular migration of a silyl group from oxygen to carbon. In this study, we report a novel propargylic…”
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5
Mechanistic Study of the Gas-Phase In-Source Hofmann Elimination of Doubly Quaternized Cinchona-Alkaloid Based Phase-Transfer Catalysts by (+)-Electrospray Ionization/Tandem Mass Spectrometry
Published in Journal of the American Society for Mass Spectrometry (01-03-2017)“…An unusual in-source fragmentation pattern observed for 14 doubly quaternized cinchona alkaloid-based phase-transfer catalysts (PTC) was studied using (+)-ESI…”
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6
Unusual (+/–)‐electrospray ionization induced fragmentation: Structural elucidation of an in‐process synthetic intermediate of doravirine (MK‐1439) using liquid chromatography/high‐resolution tandem mass spectrometry and two‐dimensional nuclear magnetic resonance
Published in Rapid communications in mass spectrometry (30-04-2017)“…Rationale During the development of a novel synthetic route to doravirine (1), a human immunodeficiency type 1 virus (HIV‐1) nonnucleoside reverse…”
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7
A facile preparation and electrochemical properties of nickel based compound-graphene sheet composites for supercapacitors
Published in Chinese chemical letters (01-05-2015)“…Composites of a nickel based compound incorporated with graphene sheets (NiBC-GS) are prepared by a simple flocculation, using hydrazine hydrate as flocculant…”
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8
Discovery of the HCV NS3/4A Protease Inhibitor (1R,5S)-N-[3-Amino-1-(cyclobutylmethyl)-2,3-dioxopropyl]-3- [2(S)-[[[(1,1-dimethylethyl)amino]carbonyl]amino]-3,3-dimethyl-1-oxobutyl]- 6,6-dimethyl-3-azabicyclo[3.1.0]hexan-2(S)-carboxamide (Sch 503034) II. Key Steps in Structure-Based Optimization
Published in Journal of medicinal chemistry (17-05-2007)“…The structures of both the native holo-HCV NS3/4A protease domain and the protease domain with a serine 139 to alanine (S139A) mutation were solved to high…”
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9
Preparation and Tribological Studies of Stearic Acid Self-Assembled Monolayers on Polymer-Coated Silicon Surface
Published in Chemistry of materials (10-02-2004)“…We present a good alternative method to improve the tribological properties of polymer films by chemisorbing a long-chain monolayer on the functional polymer…”
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10
Mechanical and tribological behaviors of PA66/PVDF blends filled with calcium sulphate whiskers
Published in Polymer composites (01-09-2009)“…The mechanical and tribological performance of the PA66/PVDF blends filled with various amount of calcium sulphate whiskers (CSW) was investigated. The…”
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11
Advancing Structure Characterization of PS-80 by Charge-Reduced Mass Spectrometry and Software-Assisted Composition Analysis
Published in Journal of pharmaceutical sciences (01-02-2022)“…The commercially available Polysorbate 80 (PS-80) is a highly heterogeneous product. It is a complex and structurally diverse mixture consisting of polymeric…”
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12
Extensive Characterization of Polysorbate 80 Oxidative Degradation Under Stainless Steel Conditions
Published in Journal of pharmaceutical sciences (01-03-2023)“…Polysorbate-80 (PS-80) is a common surfactant used in biologics formulations. However, the tendency of oxidation to PS-80 when exposed to stainless steel…”
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13
Low-molecular-weight impurity in Poloxamer 188 responsible for atypical cell culture performance for mAb production
Published in Journal of biotechnology (10-06-2022)“…During a recent manufacturing campaign for a monoclonal antibody using a fed-batch process, poor cell culture performance was observed across two manufacturing…”
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14
Mechanical and tribological behaviors of polyamide 66/ultra high molecular weight polyethylene blends
Published in Polymer engineering and science (01-05-2007)“…The blends of polyamide (PA) and ultra high molecular weight polyethylene (UHMWPE) were prepared by a Brabender DSE25 co‐twin screw extruder, and maleic…”
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15
Mechanistic insight into the oxazoline decomposition of DFC-M, a synthetic intermediate of florfenicol
Published in Journal of pharmaceutical and biomedical analysis (10-09-2019)“…•DFC-M is a key oxazoline-containing intermediate in commercial process for the synthesis of Florfenicol.•The unique acidic solution degradation mechanism of…”
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16
Development of a highly efficient decontamination approach for ceftolozane in the pharmaceutical manufacturing environment
Published in Journal of pharmaceutical and biomedical analysis (05-01-2020)“…•A highly efficient decontamination method was developed for ceftolozane as well as other cephalosporin antibiotics.•UHPLC-HRMS/MS method is sensitive and…”
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17
Crystal Structures of MEK1 Binary and Ternary Complexes with Nucleotides and Inhibitors
Published in Biochemistry (Easton) (31-03-2009)“…MEK1 is a member of the MAPK signal transduction pathway that responds to growth factors and cytokines. We have determined that the kinase domain spans…”
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18
Applications of TiCl3 as a Diagnostic Reagent for the Detection of Nitro- and N‑Oxide-Containing Compounds as Potentially Mutagenic Impurities Using Ultrahigh-Performance Liquid Chromatography Coupled with High-Resolution Mass Spectrometry
Published in Organic process research & development (15-01-2016)“…The ICH has strict guidelines for limiting the presence of potentially mutagenic impurities (PMIs) in marketed drugs. Therefore, it is important to fully…”
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19
Friction and Wear Behavior of Polyamide 66/Poly(vinylidene fluoride) Blends
Published in Journal of macromolecular science. Physics (01-07-2008)“…The tribological performance of PA66 and PVDF blends was investigated by a block-on ring sliding friction and wear tester. The appropriate amount of PVDF can…”
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20
Key steps in the structure-based optimization of the hepatitis C virus NS3/4A protease inhibitor SCH503034
Published in Journal of synchrotron radiation (01-05-2008)“…The structures of both native and S139A holo‐HCV NS3/4A protease domain were solved to high resolution. Subsequently, structures were determined for a series…”
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