Results 291 to 300 of about 5,391,787 (331)
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Carbohydrate Polymers, 2019
Curculigo orchioides, is a traditional Chinese medicine, is used in strengthening tendons and bones. We evaluated the anti-osteoporosis activity of the crude polysaccharide (CO70) isolated from the rhizomes of C. orchioides in ovariectomized rats.
Xueqian Wang +6 more
semanticscholar +1 more source
Curculigo orchioides, is a traditional Chinese medicine, is used in strengthening tendons and bones. We evaluated the anti-osteoporosis activity of the crude polysaccharide (CO70) isolated from the rhizomes of C. orchioides in ovariectomized rats.
Xueqian Wang +6 more
semanticscholar +1 more source
Computer-Assisted Structure Elucidation
2007This article describes NMR approaches to determine the molecular structure of a small organic molecule. The use of one- and two-dimensional spectra is described. The proton and carbon shifts determined are used to identify the best molecular matches among more than 30 million PubChem structures. Molecular carbon skeletons can be generated from 2-D homo-
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Modern NMR techniques for structure elucidation
Magnetic Resonance in Chemistry, 1986AbstractThe rapid growth during the last decade of multiple pulse methods in one (1D) and two‐dimensional (2D) NMR has produced over 100 new techniques of potential use in high‐resolution NMR. This review sets out to identify and to illustrate those new methods which are most useful in the determination of molecular structure.
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Structural elucidation of fucoidan from Cladosiphon okamuranus (Okinawa mozuku).
Food Chemistry, 2019Fucoidan is a sulphated polysaccharide, made up mainly of l-fucose, which is found in brown seaweeds. Its chemical structure is diverse and depends on maturity, species and geographical location.
Seng Joe Lim +4 more
semanticscholar +1 more source
Journal of Natural Products, 2019
Structural elucidation of a new triquinane sesquiterpenoid, presilphiperfolane-7α,8α-diol, 1a, isolated from Pulicaria vulgaris, was accomplished by combining solvent-induced removal of chemical shift degeneracy and computational (DFT-GIAO) prediction of
N. Radulović +4 more
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Structural elucidation of a new triquinane sesquiterpenoid, presilphiperfolane-7α,8α-diol, 1a, isolated from Pulicaria vulgaris, was accomplished by combining solvent-induced removal of chemical shift degeneracy and computational (DFT-GIAO) prediction of
N. Radulović +4 more
semanticscholar +1 more source
Elucidating pathological fibril structure
Science, 2017Structural Biology Amyloid-β (Aβ) is a key pathological contributor to Alzheimer's disease. Gremer et al. used cryoelectron microscopy data to build a high-quality de novo atomic model of Aβ fibrils (see the Perspective by Pospich and Raunser). The complete structure reveals all 42 amino acids (including the entire N terminus) and provides a structural
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Challenging Structure Elucidator
2011This chapter will review examples of challenges solved using StrucEluc and will demonstrate all of the diverse approaches for computer assisted structure elucidation discussed in this volume. The examples will include (1) the elucidation of a family of complex alkaloid natural product structures (2) the elucidation of unexpected reaction products in a ...
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Mass spectrometry for structural elucidation and sequencing of carbohydrates
Trends in Analytical Chemistry (TrAC), 2021Junqiao Wang +4 more
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Elucidating the Structure of Poly(dopamine)
Langmuir, 2012Herein we propose a new structure for poly(dopamine), a synthetic eumelanin that has found broad utility as an antifouling agent. Commercially available 3-hydroxytyramine hydrochloride (dopamine HCl) was polymerized under aerobic, aqueous conditions using tris(hydroxymethyl)aminomethane (TRIS) as a basic polymerization initiator, affording a darkly ...
Dreyer, Daniel R. +4 more
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International Journal of Biological Macromolecules, 2018
A novel arabinogalactan (MOP-1) was isolated from leaves of Moringa oleifera and was purified by macro-porous resin, DEAE-52 Cellulose and Sepharose 6B gel filtration chromatography.
Tao-Bin He +5 more
semanticscholar +1 more source
A novel arabinogalactan (MOP-1) was isolated from leaves of Moringa oleifera and was purified by macro-porous resin, DEAE-52 Cellulose and Sepharose 6B gel filtration chromatography.
Tao-Bin He +5 more
semanticscholar +1 more source