Synthesis and studies of electrochemical properties of lophine derivatives

RSC Advances ◽  
2014 ◽  
Vol 4 (97) ◽  
pp. 54740-54746 ◽  
Author(s):  
A. Hariharasubramanian ◽  
Y. Dominic Ravichandran
Keyword(s):  
Mass Spectrometry ◽  
Nuclear Magnetic Resonance ◽  
Fourier Transform ◽  
Liquid Chromatography ◽  
Infrared Spectroscopy ◽  
Nmr Spectroscopy ◽  
Magnetic Resonance ◽  
Electrochemical Properties ◽  
Fourier Transform Infrared Spectroscopy ◽  
Liquid Chromatography Mass Spectrometry

A versatile series of lophine derivatives (1–13) were synthesized and characterized, Fourier transform infrared spectroscopy (FTIR), Liquid Chromatography-Mass Spectrometry (LC-MS), and 1H and 13C nuclear magnetic resonance (NMR) spectroscopy.

scholarly journals Revisiting marine bioprospecting of tropical Indonesian macroalgae from West Timor

2021 ◽  
Author(s):  
◽  
Wem Turupadang
Keyword(s):  
Mass Spectrometry ◽  
Nuclear Magnetic Resonance ◽  
Liquid Chromatography ◽  
Nmr Spectroscopy ◽  
Magnetic Resonance ◽  
Natural Product ◽  
Marine Algae ◽  
Liquid Chromatography Mass Spectrometry ◽  
Molecular Networking ◽  
West Timor

<p>Marine algae are an important and historically rich source of new marine-based natural products. This thesis describes the screening of 40 Indonesian macroalgal samples using liquid chromatography-mass spectrometry (LC-MS) based molecular networking, and the subsequent nuclear magnetic resonance (NMR)-guided isolation and structural elucidation of a 6-deoxy-6-aminoglycoglyrecolipid (60). Molecular networking was performed using LC-MS/MS data through the online Global Natural Product Social Molecular Networking (GNPS) platform directly from crude extracts. NMR spectroscopy-guided screening was also employed targeting unique peaks detected by 1H NMR to validate any hits from GNPS. Out of 40 macroalgae specimens collected from West Timor waters, six samples were prioritised by the molecular networking screening. Proton NMR revealed three specimens with significantly interesting peaks but only one specimen, Laurencia snackeyi was purified further, which yielded compound 60.</p>

scholarly journals Revisiting marine bioprospecting of tropical Indonesian macroalgae from West Timor

2021 ◽  
Author(s):  
◽  
Wem Turupadang
Keyword(s):  
Mass Spectrometry ◽  
Nuclear Magnetic Resonance ◽  
Liquid Chromatography ◽  
Nmr Spectroscopy ◽  
Magnetic Resonance ◽  
Natural Product ◽  
Marine Algae ◽  
Liquid Chromatography Mass Spectrometry ◽  
Molecular Networking ◽  
West Timor

<p>Marine algae are an important and historically rich source of new marine-based natural products. This thesis describes the screening of 40 Indonesian macroalgal samples using liquid chromatography-mass spectrometry (LC-MS) based molecular networking, and the subsequent nuclear magnetic resonance (NMR)-guided isolation and structural elucidation of a 6-deoxy-6-aminoglycoglyrecolipid (60). Molecular networking was performed using LC-MS/MS data through the online Global Natural Product Social Molecular Networking (GNPS) platform directly from crude extracts. NMR spectroscopy-guided screening was also employed targeting unique peaks detected by 1H NMR to validate any hits from GNPS. Out of 40 macroalgae specimens collected from West Timor waters, six samples were prioritised by the molecular networking screening. Proton NMR revealed three specimens with significantly interesting peaks but only one specimen, Laurencia snackeyi was purified further, which yielded compound 60.</p>

Study on Preparation and Properties of Starch and 4-Phenolsuflonate Graft Copolymer with HRP Catalysis

2010 ◽  
Vol 129-131 ◽  
pp. 837-841 ◽  
Author(s):  
Sheng Hua Lv ◽  
Yan Fen Ma ◽  
Rui Gong ◽  
Xiao Liang Yan ◽  
Ming Ming Hou
Keyword(s):  
Mechanical Properties ◽  
Nuclear Magnetic Resonance ◽  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Magnetic Resonance ◽  
Horseradish Peroxidase ◽  
Fourier Transform Infrared Spectroscopy ◽  
Graft Copolymer ◽  
Fourier Transform Infrared ◽  
Structure And Properties

Degraded starch was reacted with 4-phenolsuflonate (PHS) in water in the presence of horseradish peroxidase (HRP) catalyst/H2O2/acetylacetone (ACAC) to give starch and PHS graft copolymers. The structure and properties of the graft copolymer are characterized by Fourier Transform Infrared spectroscopy (FTIR), Nuclear　Magnetic　Resonance (NMR). The retanned leather exhibits excellent increased thickness and softness, good dyeing ability and eligible mechanical properties.

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