منابع مشابه
Antirachitic sulfonation of some steroids.
A few sterols, some derivatives, and certain steroid materials have been transformed chemically, by heating with suitable reagents (l-4), to products having antirachitic activity. This activating reaction1 involves heating an appropriate substrate in acetic acid solution with an efficient sulfonating reagent under anhydrous conditions for a number of hours. At the termination of the reaction ti...
متن کاملThe Antirachitic Value of Irradiated Cholesterol
As is well known, young rats can be regularly protected from rickets by the addition to their dietary of 1 mg. or less of irradiated cholesterol. Various experiences led us to believe that this cholesterol was a mixture of active and inactive material and that an attempt should, therefore, be made to fractionate it. In the first place prolonged irradiation gradually inactivates cholesterol whic...
متن کاملBiotransformation of some steroids by Aspergillus wentii.
First steroid biotransformations performed by Aspergillus wentii MRC 200316 are reported. Testosterone (1) yields 6beta-hydroxytestosterone (3) and 14alpha-hydroxytestosterone (4) while progesterone (2) yields 11alpha-hydroxyprogesterone (5).
متن کاملsome properties of fuzzy hilbert spaces and norm of operators
in this thesis, at first we investigate the bounded inverse theorem on fuzzy normed linear spaces and study the set of all compact operators on these spaces. then we introduce the notions of fuzzy boundedness and investigate a new norm operators and the relationship between continuity and boundedness. and, we show that the space of all fuzzy bounded operators is complete. finally, we define...
15 صفحه اولTetrahydrobiopterin regulates monoamine neurotransmitter sulfonation.
Monoamine neurotransmitters are among the hundreds of signaling small molecules whose target interactions are switched "on" and "off" via transfer of the sulfuryl-moiety (-SO3) from PAPS (3'-phosphoadenosine 5'-phosphosulfate) to the hydroxyls and amines of their scaffolds. These transfer reactions are catalyzed by a small family of broad-specificity enzymes-the human cytosolic sulfotransferase...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1949
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(18)56965-9