A Synthetic Method for ^|^#x25b3;1, 4-3-Ketosteroids
نویسندگان
چکیده
منابع مشابه
16-Substituted steroids. XV. A new synthetic method for 16-ketosteroids.
In 1941 (1) the senior author entered the field of 16-substituted steroids with the view of preparing all of the three possible 16,17-epimers of natural estriol. Since that time two of these three epimers, 16-epiestriol (isoestriol-A) (2) and 17-epiestriol (3), have become available through our efforts and those of the Swiss investigators. In 1952 the present authors made an attempt to prepare ...
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Many previous studies (1) have indicated that cr,/?-unsaturated 3-ketosteroids are metabolized primarily by reductive reactions involving ring A. First, the double bond and then the carbonyl group are reduced, resulting in so called “tetrahydro” steroids. An earlier report from this laboratory (2) described an extract of rat liver which catalyzed both of these processes. The partial purificatio...
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The synthesis of the title compound is described. Deprotection of Cis(N-Trityl-3-azido-4-Styryl)-2-azetidinone to Cis-(3-azido-4-styryl)-2-azetidinone was found to be accelerated by the special salt effect under acidic condition
متن کاملA rapid method for the estimation of urinary 17-ketosteroids.
HE QUANTITATIVE ESTIMATION of the urinary 17-ketosteroids in the routine laboratory still presents a number of problems. The most serious of these is the presence of nonketonic chronlogens in tile final extracts prepared by the usual extraction methods. Tile removal of these interfering substances by tile application of Girard’s reagent (1, 2) is not feasible for the routine clinical laboratory...
متن کاملTotal neutral 17-ketosteroids; clinical method for measurement.
ITH INCREASING DEMAND for the determination of urinary total 17-ketosteroids as a diagnostic tool, a need has developed for a , rapid method suitable for clinical use. Such a method was pubby Drekter et al. (1) and modified by Masuda and Thuline (2). We further modified the latter method to permit a larger number of s to be run at one time. We have substituted equipment which is akable and less...
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ژورنال
عنوان ژورنال: Pharmaceutical Bulletin
سال: 1956
ISSN: 0369-9471,1881-1345
DOI: 10.1248/cpb1953.4.421