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Schizanthine X, A new alkaloid from schizanthus grahamii
(1991)
A new dimeric alkaloid 1 has been isolated from Schizanthusgrahamiiand its structure determined by spectroscopic methods. © 1991, American Chemical Society. All rights reserved.
Tropane alkaloids from Schizanthus pinnatus
(1988)
From Schizanthus pinnatus Ruiz et Pav. we have isolated seven new tropan-3α,6β-diol diesters, schizanthines F (1), G (2), H (3), I (4), K. (8), L (9), and M (10), together with tropine, (-) -6β-angeloyloxytropan-3α-ol (5), ...
Silybin dihemisuccinate protects against glutathione depletion and lipid peroxidation induced by acetaminophen on rat liver
(1989)
Acetaminophen hepatotoxicity is characterized by glutathione depletion, cellular necrosis, and, in some instances, by the induction of lipid peroxidation. Silybin dihemisuccinate, a soluble form of the flavonoid silymarin, ...
Interaction of 2,4-dihydroxy-7-methoxy-1,4-benzoxazin-3-one (dimboa) with alcoholic solvents
(1986)
Solubilities and IR spectra of DIMBOA in alcoholic solvents showed that the carbonyl group of DIMBOA is hydrogen-bonded to the solvent. Activation parameters of DIMBOA in the same solvents suggested that the decomposition ...
Decomposition of 7-nitro-2,4-dihydroxy-1,4-benzoxazin-3-one in aqueous solutions
(1991)
Kinetic and product studies indicate that the title compound decomposes in aqueous solutions to give 5-nitro-2-aminophenol with the intermediacy of N-(2-hydroxy-4-nitrophenyl)carbamic acid. © 1991.
Substituent effects in frontier orbitals of cyclic hydroxamic acids
(1994)
AM1 full geometry optimization of seven substituted cyclic hydroxamic acids (Hx) was performed. A qualitative correlation between Elumo vs Hammett's σP was observed. The reactivity of these 7-substituted Hx with hard ...
Analytical parameters of the microplate-based ORAC pyrogallol red assay
(2011)
The analytical parameters of the microplatebased oxygen radicals absorbance capacity (ORAC) method using pyrogallol red (PGR) as probe (ORAC-PGR) are presented. In addition, the antioxidant capacity of commercial beverages, ...
A Simple and Green Analytical Method for the Determination of Formaldehyde
(Soc Brasileira Quimica, 2008-01-01)
A green spectrophotometric analytical method for determination of formaldehyde in commercial samples was designed and investigated. Replacement of hazardous reagents was explored to attain the clean chemistry standards. ...