نتایج جستجو برای: hydantoin derivatives
تعداد نتایج: 105363 فیلتر نتایج به سال:
Fetal hydantoin syndrome is a rare disorder that is believed to be caused by exposure of a fetus to the anticonvulsant drug phenytoin. The classic features of fetal hydantoin syndrome include craniofacial anomalies, prenatal and postnatal growth deficiencies, underdeveloped nails of the fingers and toes, and mental retardation. Less frequently observed anomalies include cleft lip and palate, mi...
subsequent birth of normal children occur frequently enough to be frustrating for those involved in the evaluation of malformed children and counseling of the parents. The fetal hydantoin syndrome, while a recognizable pattern of malformation in some patients,2 is not such a well defined entity as, for example, achondroplasia or Down syndrome is. It is not uncommon for one to see a child with s...
The hydantoin transporter Mhp1 is a sodium-coupled secondary active transport protein of the nucleobase-cation-symport family and a member of the widespread 5-helix inverted repeat superfamily of transporters. The structure of Mhp1 was previously solved in three different conformations providing insight into the molecular basis of the alternating access mechanism. Here, we elucidate detailed ev...
Gas chromatography/mass spectrometry (GC/MS) was used to determine the amounts of eight oxidative base modifications in DNA extracted from 11 specimens of bones and soft tissues, ranging in age from 40 to >50 000 years. Among the compounds assayed hydantoin derivatives of pyrimidines were quantitatively dominant. From five of the specimens endogenous ancient DNA sequences could be amplified by ...
Aims: A microorganism with the ability to release methionine from D,L-(2-methylthioethyl) hydantoin (strain 245) was isolated from soil. The aim of this study was the identification of the strain and the adjustment of the conditions of growth and of the enzymatic reaction, in order to achieve high specific activities of bioconversion of the hydantoin. Methods and Results: Strain 245 was identif...
Four new platinum(II) complexes of 3-aminocyclopentanespiro-5-hydantoin (acpsh) and 3-aminocycloheptanespiro-5-hydantoin (achpsh) were synthesized and characterized by elemental analysis, IR and 1NMR spectra. The spectral analyses indicated a cis-square planar structure of the complexes with ligands coordinated via the NH2 group. The complexes were evaluated for in vitro cytotoxicity in murine ...
The mode of action of the antiviral drug 5-(3,4-dichlorophenyl) methylhydantoin (hydantoin) was studied in a cell-free system allowing de novo synthesis of poliovirus. This cell-free system, which is programmed with viral RNA, is suitable for the study of the late stages of poliovirus replication and, thus, for a study of antiviral compounds acting on these late stages. It was shown that, apart...
p300 and its paralog CBP can acetylate histones and other proteins and have been implicated in a number of diseases characterized by aberrant gene activation, such as cancer. A novel, highly selective, orally bioavailable histone acetyltransferase (HAT) domain inhibitor has been identified through virtual ligand screening and subsequent optimization of a unique hydantoin screening hit. Conforma...
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