Results 121 to 130 of about 925 (177)
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Angewandte Chemie, 2014
AbstractDie lähmend wirkende Verbindung (+)‐Saxitoxin (STX), die mit den Roten Tiden der Meere und der paralytischen Schalentiervergiftung assoziiert wird, ist ein potenter Inhibitor der elektrischen Leitung in erregbaren Zellen. Seine tückischen Wirkungen sind eine Folge der Hemmung spannungsgesteuerter Natriumionenkanäle (NaVs), d. h.
Arun P, Thottumkara +2 more
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AbstractDie lähmend wirkende Verbindung (+)‐Saxitoxin (STX), die mit den Roten Tiden der Meere und der paralytischen Schalentiervergiftung assoziiert wird, ist ein potenter Inhibitor der elektrischen Leitung in erregbaren Zellen. Seine tückischen Wirkungen sind eine Folge der Hemmung spannungsgesteuerter Natriumionenkanäle (NaVs), d. h.
Arun P, Thottumkara +2 more
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Journal of the American Chemical Society, 2006
AbstractChemInform 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.
James J, Fleming, J, Du Bois
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AbstractChemInform 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.
James J, Fleming, J, Du Bois
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Cornea, 2001
The aim of the current study was to define the efficacy of saxitoxin as a corneal anesthetic in rabbits after mechanical corneal abrasion and photorefractive keratectomy (PRK).Twelve Dutch belted rabbits were given a single 1.2-microg dose of saxitoxin or vehicle after mechanical abrasion of the cornea.
K G, Duncan, J L, Duncan, D M, Schwartz
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The aim of the current study was to define the efficacy of saxitoxin as a corneal anesthetic in rabbits after mechanical corneal abrasion and photorefractive keratectomy (PRK).Twelve Dutch belted rabbits were given a single 1.2-microg dose of saxitoxin or vehicle after mechanical abrasion of the cornea.
K G, Duncan, J L, Duncan, D M, Schwartz
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Toxicon, 1995
The potencies of synthetic saxitoxin (+/- STX) and six of its synthetic analogues, including the enantioselectively synthesized unnatural (-)enantiomer of decarbamoyl saxitoxin (dcSTX), were measured and compared to those of natural saxitoxin [(+)STX]. The analogues, all of which were racemic (+/-) mixtures except for dcSTX, varied in the substituents ...
G R, Strichartz +5 more
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The potencies of synthetic saxitoxin (+/- STX) and six of its synthetic analogues, including the enantioselectively synthesized unnatural (-)enantiomer of decarbamoyl saxitoxin (dcSTX), were measured and compared to those of natural saxitoxin [(+)STX]. The analogues, all of which were racemic (+/-) mixtures except for dcSTX, varied in the substituents ...
G R, Strichartz +5 more
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Neutralization of saxitoxin by anti-saxitoxin rabbit serum
Toxicon, 1985This study examined the ability of anti-saxitoxin rabbit serum to neutralize saxitoxin, both in vitro and in vivo. In vitro, two rabbit antisera decreased [3H]-saxitoxin binding to specific sites in rat brain membranes. The more potent of these sera, antiserum A, when combined with saxitoxin in vitro, decreased saxitoxin's lethal potency based on mouse
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The rates of saxitoxin action and of saxitoxin-tetrodotoxin interaction at the node of Ranvier
Pfl�gers Archiv European Journal of Physiology, 1975Voltage clamp experiments were done on single nodes of Ranvier of Rana esculenta. Equilibrium effects were obtained from INa-V curves, the rates of action from changes in INa on changing solutions during repetitive depolarizing pulses. 2. Saxitoxin (STX) exclusively and reversibly blocked Na channels, the effect being fully described by a one-to-one ...
H H, Wagner, W, Ulbricht
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Pure and Applied Chemistry, 2012
Saxitoxin (STX), a neurotoxin isolated from Alaskan butter clam, Saxidomus giganteus, inhibits voltage-gated sodium channels by binding to the pore-forming p-loop region. Here we describe stereospecific syntheses of STX and its natural derivatives, (+)-decarbamoylsaxitoxin (dcSTX) and (+)-gonyautoxin3 (GTX3).
Osamu Iwamoto +2 more
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Saxitoxin (STX), a neurotoxin isolated from Alaskan butter clam, Saxidomus giganteus, inhibits voltage-gated sodium channels by binding to the pore-forming p-loop region. Here we describe stereospecific syntheses of STX and its natural derivatives, (+)-decarbamoylsaxitoxin (dcSTX) and (+)-gonyautoxin3 (GTX3).
Osamu Iwamoto +2 more
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Journal of the American Chemical Society, 1975
Saxitoxin is a neurotoxin found in various molluscs. The p-bromobenzenesulfonate-saxitoxin was crystallized and the structure was determined by single-crystal x-ray diffraction. Bond distances and angles were discussed, and a computer generated drawing of the final x-ray model was presented. (DDA)
E. J. Schantz +6 more
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Saxitoxin is a neurotoxin found in various molluscs. The p-bromobenzenesulfonate-saxitoxin was crystallized and the structure was determined by single-crystal x-ray diffraction. Bond distances and angles were discussed, and a computer generated drawing of the final x-ray model was presented. (DDA)
E. J. Schantz +6 more
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Synthesis of Saxitoxin and Its Derivatives
Organic Letters, 2020The chiral synthesis of (+)-saxitoxin and its derivatives is described. Two consecutive carbon-nitrogen bonds at C-5 and C-6 in saxitoxin were effectively installed by the sequential Overman rearrangement of an allylic vicinal diol derived from d-malic acid.
Yuya Okuyama +5 more
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The surface waters contaminated with cyanobacteria, which are utilized for drinking, irrigation, and recreational purposes, poses a potential hazard to population health, as well as domestic animals and wildlife. Due to the observed trends of rising temperatures and the increased levels of nutrient pollution in surface waters, the occurrence of marine ...
Senanur Ozsoy +2 more
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Senanur Ozsoy +2 more
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