Thesis (PH. D.)--University of Michigan, 1941. / Two articles, by F.F. Blicke and M.F. Zienty, reprinted from the Journal of the American chemical society, v. 63, 1941.

No description available.

No description available.

Barbituric acids have been historically classified as compounds that act on the central nervous system, and as such provide therapeutic uses as anxiolytics, sedatives, hypnotics, and anticonvulsants. Recent investigations of barbituric acid derivatives have provided scientists with information that barbituric acids may have applications in antibacterial, anti-chlamydial, anti-viral, as well as anti-cancer treatments. Additionally, recent literature accounts have indicated that barbituric acid derivatives may also act as immune modulators. The recent explorations of barbiturates and their potential anti-cancer and immune modulating properties are the subject of this work. Novel synthetic approaches to the development of new barbituric acid derivatives were explored thoroughly, and the mechanisms of these novel syntheses were detailed by experiment and spectroscopic characterizations. In many cases the reaction procedures were designed for large scale, efficient syntheses, that are directly applicable to pharmaceutical production of these potentially valuable therapeutic compounds. Several new products unique to barbituric acid reactions were characterized spectroscopically. Barbituric acid derivatives were the subject of biological evaluation, and the results are reported in this work. Overall, unique synthetic approaches to the production of novel barbituric acid derivatives were accomplished to create several new classes of barbiturates with potential applications in cancer treatment.

No description available.

This study is an attempted synthesis of dithienyl barbituric acid.

A study of the synthesis of 5- (2-Thienyl) barbituric acid.

This thesis describes attempts to synthesize 5-allyl-5-(2-thienyl)-barbituric acid as an improved anticonvulsant.

A great deal of research has been devoted in recent years to the search for new drugs for the treatment of epilepsy and related convulsive disorders. This emphasis is occasioned by the fact that no one drug is effective for all patients, and also by the fact that the toxicity of a drug varies considerably from one patient to another. Among the most effective drugs are certain members of the hydantoin and barbituric acid series. For some time there has been in progress in this laboratory an investigation of members of these two series in which a hetro atom attached directly to the hetrocyclic nucleus is introduced into the side chain at position five of these two series.

Submitted by isabela.moljf@hotmail.com (isabela.moljf@hotmail.com) on 2017-05-08T13:19:35Z No. of bitstreams: 1 humbertocostagarcia.pdf: 7732602 bytes, checksum: e034ff9506a2c6b4e666fd0b184c56bc (MD5) / Approved for entry into archive by Adriana Oliveira (adriana.oliveira@ufjf.edu.br) on 2017-05-17T13:43:22Z (GMT) No. of bitstreams: 1 humbertocostagarcia.pdf: 7732602 bytes, checksum: e034ff9506a2c6b4e666fd0b184c56bc (MD5) / Made available in DSpace on 2017-05-17T13:43:22Z (GMT). No. of bitstreams: 1 humbertocostagarcia.pdf: 7732602 bytes, checksum: e034ff9506a2c6b4e666fd0b184c56bc (MD5) Previous issue date: 2012-11-30 / CAPES - Coordenação de Aperfeiçoamento de Pessoal de Nível Superior / Esta tese apresenta a síntese, caracterização espectroscópica e estrutural de 24 sistemas supramoleculares, obtidos a partir de reações envolvendo ácidos orgânicos, ligantes nitrogenados e alguns íons metálicos da primeira série de transição. Os compostos foram denominados [Mn(bpa)(H2O)4]B2.4H2O (1), [Fe(bpa)(H2O)4]B2.4H2O (2), [Co(bpa)(H2O)4]B2.4H2O (3), [Zn(bpa)(H2O)4]B2.4H2O (4), [Co2(mal)2(bpa)(H2O)2] (5), (bipi)(Hbipi+)AS-.H2O (6), [Co(bipi)2(H2O)4]ASCl.3H2O (7), (H2bpe)B2.2H2O (8), [Fe(bpe)(H2O)4]B2.4H2O (9), [Co(bpe)(H2O)4]AS2.4H2O (10), [Ni(bpe)(H2O)4]AS2.4H2O (11), [Zn(bpe)(H2O)4]AS2.4H2O (12), HASbpa (13), [Co(bpa)(H2O)4]AS2.4H2O (14), [Mn2(bpp)4(H2O)4]AS4.H2O (15), [Co2(bpp)4(H2O)4] AS4.H2O (16), [Zn(bpp)(AS)2] (17), [Mn(Hbpa)2(H2O)2(4-sb)2].2H2O (18), [Co(Hbpa)2(H2O)4](4-sb)2 (19), [Ni(Hbpa)2(H2O)4](4-sb)2 (20), [Zn(Hbpa)2(H2O)4](4-sb)2 (21), [Mn(bipi)2(H2O)4](H2Vi)2 (22), Mn(bpa)2(H2O)4](H2Vi)2 (23) e [Mn(bpp)2(HVi)]H2O (24). Para os compostos obtidos, a técnica de difração de raios X por monocristal foi utilizada para descrever o modo de coordenação, distância, ângulo de ligação e a presença de interações supramoleculares, tais como empacotamento π, ligação de hidrogênio, C–H...π, N–H...π e eletrostáticas. Tais interações foram importantes, para a estabilidade das estruturas e na formação de arranjos denominados não covalentes, que foram classificadas segundo a nomenclatura da literatura, e nomeadas neste trabalho, para alguns compostos como pseudo favo de mel, cadeia, retângulo, dentre outros. O estudo vibracional de todos os compostos sintetizados, envolvendo a espectroscopia Raman e infravermelho forneceu informações importantes, sobre a geometria de coordenação e a presença dos blocos construtores utilizados em cada síntese. O uso de bandas marcadoras, utilizadas para monitorar os ligantes presentes nos produtos obtidos, demonstrou sua importância na posição do número de onda de cada uma das bandas, quando comparadas com os ligantes livres, a fim de identificar a presença de cada um dos blocos construtores utilizados. Por fim, todas as informações estruturais e espectroscópicas foram discutidas, a fim de compreender as forças não covalentes responsáveis pela existência da estrutura no estado sólido, consideradas muito importante no contexto da química supramolecular. / This thesis presents the synthesis, spectroscopic and structural characterization of twenty-four supramolecular compounds, obtained from the reaction involving organic acids, nitrogenous ligands and several transition metal ions. The obtained compounds were named [Mn(bpa)(H2O)4]B2.4H2O (1),[Fe(bpa)(H2O)4]B2.4H2O (2), [Co(bpa)(H2O)4]B2.4H2O (3), [Zn(bpa)(H2O)4]B2.4H2O (4), [Co2(mal)2(bpa)(H2O)2] (5), (bipi)(Hbipi+)AS-.H2O (6), [Co(bipi)2(H2O)4]ASCl.3H2O (7), (H2bpe)B2.2H2O (8), [Fe(bpe)(H2O)4]B2.4H2O (9), [Co(bpe)(H2O)4]AS2.4H2O (10), [Ni(bpe)(H2O)4]AS2.4H2O (11), [Zn(bpe)(H2O)4]AS2.4H2O (12), HASbpa (13), [Co(bpa)(H2O)4]AS2.4H2O (14), [Mn2(bpp)4(H2O)4]AS4.H2O (15), [Co2(bpp)4(H2O)4]AS4.H2O (16), [Zn(bpp)(AS)2] (17), [Mn(Hbpa)2(H2O)2(4-sb)2].2H2O (18), [Co(Hbpa)2(H2O)4](4-sb)2 (19), [Ni(Hbpa)2(H2O)4](4-sb)2 (20), [Zn(Hbpa)2(H2O)4](4-sb)2 (21), [Mn(bipi)2(H2O)4](H2Vi)2 (22), Mn(bpa)2(H2O)4](H2Vi)2 (23) and [Mn(bpp)2(HVi)]H2O (24). For most of the obtained compounds, the X-ray single crystal diffraction technique has been used to describe the coordination mode, distances, bond angles as well as the presence of supramolecular interactions, such as π-stacking, hydrogen bonding, C–H…π, N–H…π and electrostatic interactions. Such interactions were considered very important for the stability of the structures and for the generation of the so-called non-covalent arrangements, which are classified according to the literature nomenclature, being mentioned in this work for some of the compounds, such as pseudo honeycomb, chain or rectangle, among others. The vibrational study of all the synthesized compounds, involving infrared and Raman spectroscopic techniques, has also provided important information about the coordination geometry and the presence of the building blocks used in each synthesis. The use of specific vibrational bands, used as markers to monitoring the ligands present in the obtained products, has shown the importance of the wavenumber position of each one of the bands, when compared to the free ligands, in order to identify the presence of each one of the building blocks used. At last, all the structural and spectroscopic information have been discussed in order to understand the non covalent forces responsible for the existence of the solid state structures, considered very important in the context of supramolecular chemistry.