Results 111 to 120 of about 848 (152)

Fused 2‐Thiohydantoin Derivatives: Evaluation as Potential Antioxidants

Archiv der Pharmazie, 1997
AbstractA series of fused 5,5‐diphenyl and 5‐arylidene‐2‐thiohydantoin derivatives were examined for their oxygen free radical inhibitory and radical scavenging properties (RSC) using both an enzymic and non‐enzymic biological generators of free radicals.
K, Kiec-Kononowicz, J, Karolak-Wojciechowska, J, Robak   +2 more
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The condensation of anthranilic acid with S-methyl-2-thiohydantoin

Experientia, 1962
Die Struktur des Kondensations-produktes aus Anthranilsaure und S-Methyl-2-thiohydantoin, bzw. aus Anthranilsauremethylester und N-Cyanglycinathylester5 wurde als die eines 2,5-(1 H, 3 H) Imidazo(2,1-b) chinazolindions bewiesen.
K, LEMPERT, G, DOLESCHALL
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Synthesis of 3‐Ω‐Amino‐2‐thiohydantoins.

ChemInform, 2003
AbstractIn the reaction of ethyl isothiocyanatoacetate with diamines, followed by cyclization of the intermediate product, 3‐monosubstituted thiohydantoins have been obtained. It was found that the reaction course depends on the purity of the isothiocyanate used and also, in the case of dialkylaminoamines, the self‐cyclization occurs.
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IR Spectroscopic Characterization of 2‐Thiohydantoins and 2‐Thiobarbiturates

Journal of Pharmaceutical Sciences, 1976
A characterization of 2-thiohydantoins and 2-thiobarbiturates by IR spectra is proposed, using three characteristic group frequencies: the "thioureide band" around 1500 cm-1 and the antisymmetric-symmetric stretching modes of NCS bonds around 1400 and 1200 cm-1.
J, Poupaert, R, Bouche
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Inhibition of the effects of thyroxine by 5,5-diphenyl-2-thiohydantoin

Biochemical Pharmacology, 1971
Abstract 5,5-Diphenyl-2-thiohydantoin (DPTH), the sulfur analog of 5,5-diphenylhydantoin (dilantin), inhibited the induction of rat tissue mitochondrial α-glycerophosphate dehydrogenase (GPD) and the stimulation of whole-body metabolic rate by exogenous thyroxine (T 4 ). It did not affect the tissue uptake, the biliary excretion, or the enterohepatic
J V, Marx, D A, Richert, W W, Westerfeld, W R, Ruegamer   +3 more
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Antimutagenic Properties of 3,5-Disubstituted 2-Thiohydantoins

Journal of Agricultural and Food Chemistry, 1998
3,5-Disubstituted 2-thiohydantoins, which were prepared by the reaction of allyl isothiocyanate (AITC) or 4-(methylthio)-3-butenyl isothiocyanate (MTBI) with various amino acids, were assayed for their inhibitory effects on the mutagenicity of 2-amino-3-methylimidazo[4,5-f]quinoline (IQ) on Salmonella typhimurium TA 98.
Asaka Takahashi, Hiroki Matsuoka, Yoshio Ozawa, Yasushi Uda   +3 more
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Acidity function 'failure.' I. 2-Thiohydantoins

Canadian Journal of Chemistry, 1979
The protonation of 2-thiohydantoin and of eight derivatives variously substituted at the 1-, 3-, and 5-positions with alkyl groups or a single phenyl followed h0 (Cox–Yates m* ∼ 1.1); however, the protonation of 3,5-diphenyl-2-thiohydantoin followed hT (m* = 1.50), and of 5,5-diphenyl-2-thiohydantoin an acidity function intermediate between h0 and hT (
John T. Edward, Sin Cheong Wong
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A new technetium(V)-2-thiohydantoin complex

Transition Metal Chemistry, 1994
A new 2-thiohydantoin 99Tcv complex was prepared by the direct reduction of TcO 4 − with alkaline Na2S2O4 in the presence of an excess of the ligand, and characterized by spectroscopy. Reversed phase HPLC on lichrosorb-Rp-18 showed the complex to be pure; electrophoresis measurements showed it to be neutral. The complex was H2O soluble.
Refaat M. Mahfouz, Anwar S. El Shahawy, Ali A. Hassan   +2 more
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ChemInform Abstract: Condensation on Alumina. Part 3. Synthesis of 5‐Alkylidene‐2‐thiohydantoin from 3‐Acetyl‐2‐thiohydantoin.

ChemInform, 1988
Abstract3‐Acetylthiohydantoin (IV) is prepared by cyclocondensation of ammonium thiocyanate (I) and glycine (II) in the presence of acetic anhydride (III).
D. VILLEMIN, M. RICARD
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The first example of α-ferrocenylalkylation of 2-thiohydantoin

Mendeleev Communications
The first example of the α-ferrocenylalkylation reaction of substituted 2-thiohydantoin was performed using a developed two-step procedure involving the formation of a salt of the starting thioamide with (ferrocenylmethyl) trimethyl ammonium, followed by alkylation of the anion by its counterion. The reaction results in the formation of isomeric <em&
Dmitry Alexandrovich Guk, Georgy L. Karetnikov, Roman Olegovich Burlutsky, Victor Aleksandrovich Tafeenko, Elena Kimovna Beloglazkina   +4 more
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