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The conformation of gramicidin S and its N,N'-diacetyl derivative in solutions.
TLDR
The data obtained provide unequivocal proof of the Hodchkin-Oughton-Schwyzer model of gramicidin S, for which φ and ψ coordinates are given. Expand
A Quantitative Structure‐Activity Relationship (QSAR) Study of the Antioxidant Activity of Flavonoids
A Quantitative Structure-Activity Relationship (QSAR) study has been carried out for 27 flavonoids belonging to four different groups (isoflavons, flavons, flavonols, flavanons) to correlate andExpand
Aconitum and Delphinium sp. alkaloids as antagonist modulators of voltage-gated Na+ channels: AM1/DFT electronic structure investigations and QSAR studies
TLDR
The results obtained from this research have confirmed the experimental findings suggesting that neurotoxins acting at type 2 receptor site of voltage-dependent sodium channel are activators and blockers with common structural features and differ only in efficacy. Expand
Triterpene glycosides ofAstragalus and their genins. VIII. Askendoside C fromAstragalus taschkendicus
A new glycoside of the cycloartane series — askendoside C — has been isolated from the roots of the plantAstragalus taschkendicus Bge., and its structure has been established on the basis of chemicalExpand
Catechins and proanthocyanidins ofAlhagi sparsifolia. I
Ten individual compounds have been isolated from the epigeal part ofAlhagi sparsifolia Shap. in various stages of vegetative growth. Their structures have been established by a study of PMR spectra,Expand
Glucomannan from Narcissus poeticus Studied by PMR and 13C NMR Spectroscopy
Native acetylated glucomannan of molecular weight (MW) 32000 with a glucose:mannose ratio 1:30 was isolated from bulbs of Narcissus poeticus. Glucomannan was depolymerized to a fragment of MW 15000Expand
Triterpene glycosides ofAstragalus and their genins. VI. Cycloasgenin C fromAstragalus taschkendicus
A new isoprenoid — cycloasgenin C — has been isolated from the roots of the plantAstragalus taschkendicus C. Bge, and on the basis of chemical transformations and spectral characteristics itsExpand
New flavanones from Scutellaria phyllostachya roots
The new natural flavanones (+)-5,2′-dihydroxy-6,6′,7-trimethoxyflavanone and (+)-5,2′-dihydroxy-6,6′,7,8-tetramethoxyflavanone in addition to the known flavones chrysin, norwogonin, and wogonin wereExpand
Flavonoid galacturonides and glucuronide from the aerial part of Scutellaria schachristanica
National Science and Technology Minister of China 2011BAI05B05; CAS/SAFEA International Partnership Program for Creative Research Team
Structure and stereochemistry of lapiferin
SummaryThe roots ofFerula lapidosa have yielded a new ester of the carotane series — lapiferin — and its structure and configuration have been established on the basis of chemical transformations andExpand
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