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Síntese de sulfetos e dissulfetos aziridínicos quirais e aplicação em catálise assimétrica
(Universidade Federal de Santa Maria, 2003-03-12)
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Novos corantes derivados de vinil-calcogenil fenotiazinas: síntese e estudo das propriedades fotofísicas e eletroquímicas
(Universidade Federal de Santa Maria, 2022-10-21)
This work presents the synthesis and studies of photophysical and electrochemical
behaviour of new phenothiazines derivatives containing the vinyl-chalcogenyl group in
different positions of the heterocyclic. This research ...
Preparação de 1,1,1-trialo-4-metil[fenil]seleno-3-alquen-2-onas como precursores para síntese de 3-trialometil-[3-carboxi] isoselenazóis
(Universidade Federal de Santa Maria, 2002-04-19)
A convenient synthesis of 16 1,1,1-trihalo-4-methyl[phenyl]seleno-3-alken-2-ones [CX3C(O)CH=CR1SeR, where X = Cl, F; R = Me, Ph e R1 = H, Me, Et, n-Pr, iso-Pr, iso-Bu, Ph, 4-F-C6H4 e 4-Cl-C6H4], from the reaction of the ...
Síntese e aplicação de pirazóis na construção de poliheterociclos com potencial bioatividade
(Universidade Federal de Santa Maria, 2022-09-06)
This work reports the synthesis of eight series of substituted trifluoromethyl
heterocycle compounds, based on the synthetic versatility and regioselectivity of 4-
alkoxy(amino)-5-bromo-1,1,1-trifluorpent-3-en-2-ones in ...
Síntese de peptídeos lineares precursores dos alcalóides Condalina-A, Scutianina-M, Scutianina-L e Adouetina-Y: estudos estruturais e suas atividades biológicas
(Universidade Federal de Santa Maria, 2011-07-10)
This thesis describes the synthesis of a series of peptides precursors of cyclopeptide
alkaloids Condaline-A, Scutianine-M, Scutianine-L e Adouetine-Y. Their antimicrobial
activity was evaluated to conduct a study of ...
Síntese e avaliação anti-SARS-CoV-2 e fotofísica dos 1,10- fenantrolina-4,5-imidazo-benzocalcogenazóis
(Universidade Federal de Santa Maria, 2022-08-29)
In this work, a new serie of 1,10-phenanthroline-4,5-imidazo-benzochalcogenazoles 5a-h/
6a-g obtained through the Debus-Radziszeski condensation was synthesized.
Benzoxazoles and benzothiazoles were previously synthesized ...
2-amino-3-arildiazenil-pirazolo[1,5-a]pirimidinas trifluormetilsubstituídas: síntese, derivatizações e avaliação das propriedades fotofísicas
(Universidade Federal de Santa Maria, 2022-08-19)
This thesis presents the results on the synthesis, structural study, and evaluation of the photophysical
properties of new (E)-5-(alkyl/aryl/heteroaryl)-2-amino-3-(aryldiazenyl)-7-(trifluoromethyl)pyrazolo[1,5-
a]pyrimidine ...
Regioquímica da reação de alquilação entre 4- (trialometil)pirimidin-2(1h)-onas e 5-bromoenonas
(Universidade Federal de Santa Maria, 2022-09-23)
The present thesis reports the reactivity study between 5-bromo-1,1,1,-trifluoro-4-
methoxy(amino)pent-3-en-2-ones (5-bromoenones/enaminones) towards 5- or 6-
substituted 4-(trihalomethyl)pyrimidin-2(1H)-ones. During the ...
Tabernaemontana catharinensis A. DC: estudo dos metabólitos secundários, atividade biológica, cultivo in vitro e quantificação por RMN de alcaloides majoritarios
(Universidade Federal de Santa Maria, 2022-08-25)
The phytochemical investigation of the fractions from the leaves of Tabernaemontana catharinensis (Apocynaceae, popularly known as cobrina), led to the isolation of seven componds, three steroids: stigmasterol, β-sitosterol ...
Uso de energia microondas na síntese de enonas e de 4,5-diidropirazóis trialometil-substituídos
(Universidade Federal de Santa Maria, 2007-08-17)
The solvent-free microwave-assisted regiospecific synthesis of a series of 5-trihalomethyl-4,5-dihydro-1H-pyrazole (7 - 10) from the cyclocondensation of 1,1,1-
trihalo-4-alkoxy-3-alken-2-ones (5 - 6),[ CX3COC(R)2=C(R)1OR, ...