Results 211 to 220 of about 126,690 (263)
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The Structure Elucidation of Pseudothiocolchicine
Helvetica Chimica Acta, 1985AbstractA colchicine derivative, previously isolated from the reaction of isocolchicine with sodium thiomethoxide in aqueous MeOH, was now identified as 11‐(methylthio)isocolchicine on the basis of 1H‐, 13C‐NMR spectra and chemical correlation. This reaction represents the first example of abnormal nucleophilic displacement (telesubstitution) in the ...
B. DANIELI +3 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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The structural elucidation of Eisenstein’s formula
Science China Mathematics, 2010zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Li, Hailong +2 more
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Structural Elucidation of Complex Carbohydrates
1988Many current problems in immunology depend on a detailed understanding of oligosaccharide and glycoconjugate structures. In contrast to other biopolymers, oligosaccharides do not have well established and sensitive analytical procedures for the determination of their structures.
V N, Reinhold, S, Santikarn
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Retro–Leapfrog and structure elucidation
Journal of Mathematical Chemistry, 2008zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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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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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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The Structure Elucidation of Haprolid
Synthesis, 2017The assignment of two stereocenters of the natural product haprolid through the application of a profile hidden Markov model (HMM) and its confirmation through total synthesis of the natural product and of two of its diastereomers are reported. The structure elucidation of this polyketide-peptide hybrid natural product is a telling showcase of how ...
Markus Kalesse +6 more
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Total Synthesis and Structural Elucidation of (−)-Maurenone
The Journal of Organic Chemistry, 2005AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Crossman, Julia Stephanie +1 more
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Strategies of Structure Elucidation
2015Different strategies regarding the application of the system depending on the specific features of the problem under analysis are discussed in this chapter. The input of 1D and 2D NMR spectroscopy data (automated and manual) to the program and the creation of electronic data tables are outlined.
Mikhail E. Elyashberg +1 more
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