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Showing 1-13 of 13 results for "142026" within Papers
P Lundquist et al.
Analytical biochemistry, 211(1), 23-27 (1993-05-15)
A fluorometric high-performance liquid-chromatographic method is described for the determination of cyanate in human plasma. The method is based on the derivatization of cyanate with 2-aminobenzoic acid (anthranilic acid), leading to a stable cyclic fluorescent product, 2,4(1H,3H)-quinazolinedione. The fluorescent product
I A Rivero et al.
Molecules (Basel, Switzerland), 9(7), 609-616 (2007-11-17)
Quinazolinone and quinazolinedione derivatives are of considerable interest due to their wide array of pharmacological properties. In this paper we report the synthesis of ten quinazolinediones. The previous isolation of two of these compounds, namely 1-methyl-3-(2'-phenylethyl)-1H,3H-quinazoline-2,4-dione and 1-methyl-3-[2'-(4'- methoxyphenyl)ethyl]-lH,3H-quinazoline-2,4-dione, from
John B Sutherland et al.
Journal of bioscience and bioengineering, 111(3), 333-335 (2010-12-21)
Cultures of Aspergillus niger NRRL-599 in fluid Sabouraud medium were grown with quinazoline and phthalazine for 7 days. Metabolites were purified by high-performance liquid chromatography and identified by mass spectrometry and proton nuclear magnetic resonance spectroscopy. Quinazoline was oxidized to
L Hedstrom et al.
Biochemistry, 23(8), 1753-1759 (1984-04-10)
The benzoxazinones 2-ethoxy-4H-3,1- benzoxazin -4-one (1a) and 2-(trifluoromethyl)-4H-3,1- benzoxazin -4-one (1d) inactivate chymotrypsin. The inactivation is stoichiometric and proceeds with rate constants of 7 X 10(5) M-1 min-1 and greater than 4 X 10(6) M-1 min-1, respectively. The inactivated enzyme
J Michel et al.
Nucleic acids research, 24(6), 1127-1135 (1996-03-15)
A major limitation in triple-helix formation arises from the weak energy of interaction between the third strand and the double-stranded target. We tried to increase the stacking interaction contribution within the third strand by extending the aromatic domain of thymine.
R Stribling et al.
Journal of molecular evolution, 32, 282-288 (1991-01-01)
Previous attempts to produce nonenzymatic template-directed oligomerizations of activated pyrimidines on polypurine templates have been unsuccessful. The only efficient reactions are those where the template is composed primarily of pyrimidines, especially cytosine. Because molecular evolution requires that a synthesized daughter
Tim R Blower et al.
Proceedings of the National Academy of Sciences of the United States of America, 113(7), 1706-1713 (2016-01-23)
Mycobacterium tuberculosis (Mtb) infects one-third of the world's population and in 2013 accounted for 1.5 million deaths. Fluoroquinolone antibacterials, which target DNA gyrase, are critical agents used to halt the progression from multidrug-resistant tuberculosis to extensively resistant disease; however, fluoroquinolone
Katie J Aldred et al.
Proceedings of the National Academy of Sciences of the United States of America, 113(7), E839-E846 (2016-01-23)
Mycobacterium tuberculosis is a significant source of global morbidity and mortality. Moxifloxacin and other fluoroquinolones are important therapeutic agents for the treatment of tuberculosis, particularly multidrug-resistant infections. To guide the development of new quinolone-based agents, it is critical to understand
L Li et al.
Yao xue xue bao = Acta pharmaceutica Sinica, 28(3), 229-233 (1993-01-01)
This paper first suggests that 2,4 (1H,3H) quinazolinedione (QZL) may be used as a quality control standard for the Chinese herbal drugs Daqingye (Folium Strobilanthis et Polygoni) and Banlangen (Radix Strobilanthis) as well as its preparations. QZL was found for
L Li et al.
Yao xue xue bao = Acta pharmaceutica Sinica, 28(3), 238-240 (1993-01-01)
Seven compounds have been isolated from the whole plant of Strobilanthes cusia (Nees) O. Ktze. Three of them are triterpenes (I-III), two are indole alkaloids (IV, V), two are quinazolinone alkaloids (VI, VII). On the basis of spectral analysis and
Hiroki Kakuta et al.
Chemical & pharmaceutical bulletin, 51(11), 1273-1282 (2003-11-06)
Potent, specific, chemically stable and non-peptide/small-molecular inhibitors of puromycin-sensitive aminopeptidase, such as 3-(2,6-diethylphenyl)-2,4(1H,3H)-quinazolinedione (PAQ-22, 5), were prepared by the structural development of a potent PSA inhibitor, 2-(2,6-diethylphenyl)-1,2,3,4-tetrahydroisoquinoline-1,3-dione (PIQ-22, 4). The design was carried out partly by applying electrostatic potential field
Zhaoguang Li et al.
Journal of combinatorial chemistry, 10(3), 484-486 (2008-04-19)
An efficient and convenient method was developed for the preparation of 2,4(1H,3H)-quinazolinediones and 2-thioxoquinazolinones. Substituted methyl anthranilate reacted with various iso(thio)cyanates in DMSO/H2O without any catalyst or base by using microwave irradiation to generate diversity on the 2,4(1H,3H)-quinazolinediones or 2-thioxoquinazolinones.
Dora Carrico et al.
Bioorganic & medicinal chemistry, 13(3), 677-688 (2005-01-18)
A series of novel protein geranylgeranyltransferase-I (PGGTase-I) inhibitors based on a benzoyleneurea scaffold has been synthesized. Using a benzoyleneurea scaffold as a mimetic for the central dipeptide (AA), we have developed CAAX peptidomimetic inhibitors that selectively block the activity of
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