منابع مشابه
Enzymatic synthesis of steroid sulfates.
De Meio and Lewycka (1) have obtained indirect evidence that conjugation of dehydroisoandrosterone with sulfuric acid occurs in a system consisting of microsome-free supernatant fluid of rat liver, adenosine triphosphate (ATP), and magnesium and sulfate ions. They showed that, following incubation, some of the Zimmermann-positive material remains in the aqueous phase after ether extraction at p...
متن کاملBiosynthesis of Steroid Sulfates by Human Ovarian Tissue.
Sulfate esters of steroid hormones had been considered to represent end products of steroid metabolism designed for excretion. Sulfation of steroids in vitro had been demonstrated with mammalian liver preparations, and it had been generally assumed that the liver was the major site of production of these compounds in man. Revision of this view became necessary with the demonstration that the st...
متن کاملSynthesis of cyclic sulfates by halocyclization.
[reaction: see text]. We report the synthesis of cyclic sulfates by halocyclization. The resulting cyclic sulfate products can be opened selectively with sodium azide to transform them into highly functionalized compounds that contain azide, alcohol, and halide groups.
متن کاملSynthesis of Flavonoid Sulfates. II. The Use of Aryl Sulfatase in the Synthesis of Flavonol-3-sulfates*
There has been an increasing number of reports in recent years on the natural occurrence of flavonoid sulfates in the plant kingdom [2—21]. This considerable interest seems to be related to their suggested role in the detoxification of excess sulfate in response to high sulfur environment [2], From structural point of view, the naturally occurring flavonoid sulfates are derivatives of common hy...
متن کاملBile acid sulfates. I. Synthesis of lithocholic acid sulfates and their identification in human bile.
Sulfate esters of lithocholic, glycolithocholic, and taurolithocholic acids were synthesized using sulfur trioxide in pyridine; they were purified by crystallization from methanol or ethanol as the diammonium salts, and their chemical compositions, infared spectra, and chromatographic behavior were determined. Strong alkaline hydrolysis of these sulfates, as commonly performed during quantitati...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1956
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(20)89936-0