Results 141 to 150 of about 1,287 (164)

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
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +2 more sources

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
openaire   +1 more source

Two cycloalkanespiro-5-(2-thiohydantoins): Synthesis, spectral and structural characterization [PDF]

Journal of Molecular Structure, 2009
The presented study deals with the structural and spectral properties of two derivatives of 2-thiohydantoin employing experimental and theoretical methods. The crystal structures of two novel cycloalkanespiro-5-(2-thiohydantoins) are described and compared with the available data on their dithio- and dioxo- analogues.
Ahmedova, Anife, Pavlović, Gordana, Marinov, Marin, Stoyanov, Neyko, Šišak, Dubravka, Mitewa Mariana   +5 more
openaire   +2 more sources

Metal ion interactions of p-dimethylaminobenzylidene-2-thiohydantoin

Microchemical Journal, 1982
Abstract The acid dissociation constants for dimethylaminobenzylidene-2-thiohydantoin were determined by spectrophotometry. A spectrophotometric survey was carried out on the reaction between DMABTH and several metal ions and a study of the stoichiometric ratios was included.
M.T.Montaña González, J.L.Gómez Ariza
openaire   +1 more source

ChemInform Abstract: Chemical Reactivity of 2‐Thiohydantoin Derivatives.

Chemischer Informationsdienst, 1977
AbstractMannich‐Reaktion der Thiohydantoine (I) führt zu den Basen (III); Reaktion von (I) mit den Säurederivaten (IV) liefert die Ester (Va) bzw. Säuren (Vb).
A. F. A. SHALABY, H. A. DABOUN, M. A. ABDEL AZIZ   +2 more
openaire   +1 more source

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
openaire   +2 more sources

ChemInform Abstract: PREPARATION OF HYDANTOIN AND 2‐THIOHYDANTOIN

Chemischer Informationsdienst, 1978
AbstractEs wird eine wesentlich verbesserte Darstellungsmethode mitgeteilt.
openaire   +1 more source

Structure of a substituted 2-thiohydantoin

Acta Crystallographica Section C Crystal Structure Communications, 1992
M. F. Mackay, B. M. Duggan, R. L. Laslett, J. F. K. Wilshire   +3 more
openaire   +1 more source