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5-Androsten

As described in U.S. Patent 3,029,263, one possibility is a multistep synthesis starting from 3/3,17/3-dihydroxy-l 7a-methyl-5-androstene. [Pg.220]

Acetophenone, 4 methoxy 2 (p-methoxyphenyl)-, 40,16 30 Acetoxy-5 androstene 170-car-boxylic acid, 42, 4 30-Acetoxyetienic acid, 42, 4 3/8-Acetoxy-S pregnen-20 one, conversion to 3/3-acetoxyetienic acid, 42, 5... [Pg.105]

C24H30O5) see lloprost 17P-benzoyloxy-3p-hydroxy-5-androstene (C2ijH3403 1175-12-8) see Mesterolone Testosterone 2-[l-(benzoyloxymethyl)cyclopropyl]acetonitrile (C13H13NO2 142148-12-7) see Montelukast sodium... [Pg.2303]

On a dark background cholesterol (Eluent A, h/ f 20-25) emitted blue, coprostanol (Eluent A, h/ f 25-30) blue, 4-cholesten-3-one (Eluent A, h/ f 40-45) blue, 5a-cholestan-3-one (Eluent A, h/ f 60) blue, coprostanone (Eluent A, h/ f 70) blue, estriol 3-sulfate (Eluent B, h/ f 5-10) yellow, 11-ketoetiocholanolone (Eluent B, h/ f 15-20) blue, estrone (Eluent B, h/ f 20-25) ochre, 11-desoxycorticosterone (Eluent B, h/ f 30-35) yellow, 17a-ethinyl-5-androstene-3p,17p-diol (Eluent B, hRj 45-50) ochre, 4-cholesten-3-one (Eluent B, h/ f 55-60) faint blue and coprostanone (Eluent B, h/ f 65-70) violet fluorescences. [Pg.181]

Fig. 2 Fluorescence scan of a chromatogram track with 100 ng each of estriol-3-sulfate (1), 11-ketoetiocholanone (2), estrone (3) 11-desoxycorticosterone (4) and 17a-ethinyl-5-androsten-3P,17P-diol (5), together with 1 pg each of 4-cholesten-3-one (6) and coprostanone (7) per chromatogram zone. Fig. 2 Fluorescence scan of a chromatogram track with 100 ng each of estriol-3-sulfate (1), 11-ketoetiocholanone (2), estrone (3) 11-desoxycorticosterone (4) and 17a-ethinyl-5-androsten-3P,17P-diol (5), together with 1 pg each of 4-cholesten-3-one (6) and coprostanone (7) per chromatogram zone.
Li[AlH4]/Ether Ruckfl., 3 h 3j)-Hydroxy-l7f)-( 1-pyr-rolidinyl) -5-androsten 93 4... [Pg.918]

Analog erhalt man Brom- und Alkoxycarbonyl-substituierte Produkte wie z.B. 1-( 2-Brom-4-methoxycarbonyl-benzyl)-6,7-dimethoxy-2-methyl-1,2,3,4-tetrahydro-isochinolin (61%). Ein Beispiel aus der Steroid-Chemie ist die Herstellung von / 7fi-Dimelhylamino-3-hydroxy-17a-methyl-5-androsten aus einem Iminium-Salz2 ... [Pg.1071]

Figure 9, A sterol-polyether conjugate 5, 5-androstene-3p,17p-bis[(oxycarbonyl)-hexaethylene glycol] could take a folded conformation 5f and assemble upon insertion into lipid layers. ... Figure 9, A sterol-polyether conjugate 5, 5-androstene-3p,17p-bis[(oxycarbonyl)-hexaethylene glycol] could take a folded conformation 5f and assemble upon insertion into lipid layers. ...
Phenylselenolactonization.1 This reaction has been used to prepare 24,20-steroidal lactones (3a and 3b). Thus reaction of la and lb, prepared in several steps from 3p-methoxy-5-androstene-17-one, with QH5SeCl (2 equiv.) and (1 equiv.) yields directly the unsaturated lactones 2a and 2b which are reduced by diimide to 3a and 3b. [Pg.26]

The abstraction of hydrogen leading to the ketene (Formula 240) is stereospecific giving the 13a-configuration. The same acid (Formula 241) is obtained from 5-androsten-3/8-ol-17-one (Formula 242) and from the C-13 epimer (Formula 243) (91). [Pg.368]

For example the 0-tetrahydropyran.yl derivative of 3g- hydroxy 17-oxo 5-androstene 8 reacted on the bianion and give after metha-nolysis of protective group the 3g, 178— dihydoxy 5-androstene 17a- propanoic acid y-lactone 9 (4). ... [Pg.150]

Treatment of the 4-oxasteroid 467 with Lawesson s reagent effects the simultaneous O—>S conversion and dehydration of the hemiacetal unit to give the 4-thia-5-androstene-17-one in 40% yield. Subsequent hydrogenation results in a (3 2) mixture of the 4-thia-5-ot- and 5-(3-androstane-17-ones (Scheme 161) <2005T3691>. [Pg.885]

See other pages where 5-Androsten is mentioned: [Pg.314]    [Pg.427]    [Pg.968]    [Pg.256]    [Pg.666]    [Pg.780]    [Pg.1895]    [Pg.2282]    [Pg.2299]    [Pg.2357]    [Pg.2379]    [Pg.2379]    [Pg.2385]    [Pg.2399]    [Pg.289]    [Pg.368]    [Pg.382]    [Pg.175]    [Pg.570]    [Pg.570]    [Pg.586]    [Pg.852]    [Pg.370]    [Pg.2944]    [Pg.268]    [Pg.175]    [Pg.15]    [Pg.1895]    [Pg.2343]    [Pg.2385]    [Pg.2399]   
See also in sourсe #XX -- [ Pg.3 , Pg.7 , Pg.534 , Pg.539 , Pg.541 ]



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