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1- Acetoxy-2,6-dioxo

Analog erhalt man ausgehend von 3/3-Hydroxy-16a-acetoxy-20-oxo-pregnen-(5) 7 6u-Acetoxy-3,20-dioxo-pregnen-(4)5. [Pg.514]

Analog wird 17a.-Hydroxy-21 -acetoxy-pregnatrien-(l,4,9")2 aus 9x-Brom-l 1/ ,17a-dihydroxy-21-acetoxy-3,20-dioxo-pregnadien-(l,4) erhalten. [Pg.515]

Aus 9a-Brom-l 1/3,17a-dihydroxy-2l-acetoxy-3,20-dioxo-pregnadien-( 1,4) wird da-gegen das 17a-Hydroxy-21-acetoxy-l,ll-epoxy-3,20-dioxo-5,9-cyclo-pregnan1 (F 177-180°) neben Eliminierungs- und Umlagerungsprodukten gebildet ... [Pg.520]

Dihydroxy-16a-carboxy- 157 3/3,21 -Dihydroxy-16a, 17a-epoxy- 779 3,20-Dioxo-16 -carboxy- 157 3/3-Hydroxy-16a-acetoxy-20-oxo- 514 17a-Hydroxy-3/ ,21-diacetoxy-20-oxo- 778 3/3-Hydroxy-16a, 17a -epoxy-20-oxo- 779... [Pg.970]

Dihydroxy-21 -acetoxy-3,20-dioxo- 518 Piperidin-( 4-spiro-l) -phthalan... [Pg.978]

C24H3iFO. 50763-89-8) see Diflorasone diacetate 21-acetoxy-3 0-dioxo-6a-fluoro-l 1 P-hydroxy- 16a-methyl-4-pregnene... [Pg.2281]

In 5o -fluoro-6,17-dioxo steroids and 5a-fluoro-6,20-dioxo steroids the 6-oxo group is preferentially fluorinated by sulfur tetrafluoride. For example, treatment of 3/ -acetoxy-5a-fluoropreg-... [Pg.341]

Acetoxy-2,4-dioxo-5-fluoro- ElOa, 288 (En f Ac-OF) 5-Aminocarbonyl-2,4-dioxo-5-fluoro-6-hydroxy- ElOb,. 355 (En + Fj/H20)... [Pg.803]

J-Aceioxy-17ot,20 20,21 -bis-[me-tliyleuedioxy]-6-difluoromcthyl-ElOb, 171 (CHO - CHF2) 3//-Aceioxy-5.6-difluoro-20-oxo-ElOb,. 224 (tn + F2) i7-Aceioxy-20.2(j-difluoro-l 1 -oxo-ElOa, 341 (CO - CF2) 3/ -Acetoxy-6,21-dioxo-5-fluoro-ElOa, 342 (Educt) 3/ -Acetoxy-9a-fluoro-17 -hydroxy-16/ -methyl- ElOb, 17 (II F)... [Pg.852]

Acetoxy-6x.9x-difluoro-l 1 //. 17x-dihydroxy-3,20-dioxo-16x-methyl- ElOb, 139 (9.11-Epo.xy-Der. + HF)... [Pg.852]

Acetoxy-6,16-dimcthyl-3,20-dioxo-9-fluoro-11 -hydroxy-E10b2. 81 (1-An - 1-En)... [Pg.853]

S(4)-3,20-Dioxo-6a,7a-oxido-17a-acetoxy-19-norpregnene Hydrochloric acid Methanesulfonyl chloride Sodium acetate... [Pg.207]

A solution of 250.0 mg of S4-3,20-dioxo-6a,7a-oxido-17a-acetoxy-19-norpregnene in 15 ml of 1 N hydrochloric acid in dioxan is kept for 1 h at 25°C, then poured into water and neutralized with sodium bicarbonate solution. The precipitated crude product is dissolved in a 5 1 mixture of ether and methylene chloride, washed with water until the washings run neutral, and the solution is dried and evaporated under vacuum to give the S4-3,20-dioxo-6-chloro-7a-hydroxy-17a-acetoxy-19-nor-pregnene. [Pg.207]

The crude 84-3,20-dioxo-6-chloro-7a-hydroxy-17a-acetoxy-19-nor-pregnene is dissolved in 3 ml of pyridine, mixed at 5°-0°C with 0.3 ml of methanesulphonyl chloride while being stirred, and the mixture is kept for 2 days at 10°C. The reaction product is then poured into dilute sodium bicarbonate solution, dissolved in ether, and the ethereal solution is washed until the washings run neutral, dried and evaporated under vacuum and the 84-3,20-dioxo-6-chloro-7a-mesyloxy-17a-acetoxy-19-norpregnene is obtained. [Pg.207]

The 84-6-3,20-dioxo-6-chloro-17-hydroxy-19-norpregnadien, melting point 159°-161°C, may be produced by hydrolysis of 84/6-3,20-dioxo-6-chloro-17a-acetoxy-19-norpregnadiene. [Pg.207]

See other pages where 1- Acetoxy-2,6-dioxo is mentioned: [Pg.515]    [Pg.968]    [Pg.968]    [Pg.968]    [Pg.968]    [Pg.968]    [Pg.969]    [Pg.970]    [Pg.970]    [Pg.970]    [Pg.226]    [Pg.640]    [Pg.2281]    [Pg.2281]    [Pg.2281]    [Pg.2281]    [Pg.2281]    [Pg.2281]    [Pg.198]    [Pg.803]    [Pg.803]    [Pg.851]    [Pg.852]    [Pg.853]    [Pg.858]    [Pg.91]    [Pg.207]    [Pg.195]    [Pg.207]    [Pg.226]    [Pg.603]    [Pg.870]    [Pg.2281]    [Pg.2281]   
See also in sourсe #XX -- [ Pg.370 ]



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2.4- Dioxo

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