On the Reaction of D-Glucuronolactone with Acid Hydrazides. I
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چکیده
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histological evaluation of the effect of three medicaments; trichloracetic acid, formocresol and mineral trioxide aggregate on pulpotomized teeth of dogs
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Acylation of hydrazides with acetic acid and formic acid.
In peptide synthesis, hydrazides are important intermediates for the azide coupling method. A hydrazide is converted to the corresponding azide in the presence of an acid and a nitrite. When acetic acid (or formic acid) is used as the acid, partial acetylation (or formylation) of the hydrazide occurs as a side reaction. Formylation of the hydrazide is much faster than acetylation. Removal of th...
متن کاملMetabolism of D-glucuronolactone in mammalian systems. Inhibitory properties of the products of D-glucuronolactone-dehydrogenase action.
1. d-Glucuronolactone was converted into d-glucaro-(1-->4)-lactone, a beta-glucuronidase inhibitor, probably via the intermediate d-glucaro-(1-->4)-(6-->3)-dilactone, by a dehydrogenase in human-liver extracts. 2. Similar experiments with mouse-liver extracts appeared to yield only d-glucaric acid or a non-inhibitory lactone. 3. A strong beta-glucuronidase inhibitor was present in mouse liver a...
متن کاملThe synthesis of L-ascorbic acid in the rat from D-glucuronolactone and L-gulonolactone.
Previous studies have shown that the intact carbon chain of glucose is utilized for the synthesis of L-ascorbic acid in the rat (l-3). Evidence for this precursor relationship came from experiments in which the administration of carbon land carbon 6-labeled glucose tracers resulted in the urinary excretion of n-ascorbic acid labeled predominantly in carbon 6 and carbon 1, respectively. Although...
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ژورنال
عنوان ژورنال: YAKUGAKU ZASSHI
سال: 1962
ISSN: 0031-6903,1347-5231
DOI: 10.1248/yakushi1947.82.7_1046