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Cholestenyl

C6H5)3P C(CH2COC6H5)C(OCH2C8H5)C6HB, Br (C6HsCH20)2P(0) cholestenyl... [Pg.255]

A4 -Cholestcne-3-one, 269 As-Cholestene-3-one, 380 A4-Cholestenyl acetate, 265 A9( 1 )-Cholestenylacetate, 265 Cholesteryl acetate, 51 Cholesteryl phosphorodichtoridate, 390 Cholic add, 252,416 Chromic acid, 95-96 Chromic anhydride, 96-97 Chromic anhydride in graphite, 97 Chromic anhydride-Pyridine, 96, 304 Chromium(II)-amine complexes, 97 Chromium(lll) chloride, 162 Chromium hexacarbonyl, 346 Ouomium(II) perchlorate, 97 Chromous acetate, 97-98 Chromous chloride, 506 Chromyl chloride, 98-99 Qnnamaldehyde, 97,269,406 Cinnamic alcohol, 97 Cinnamyl acetate, 322... [Pg.319]

Diagnosis of unsaturation types. A -Cholestenyl acetate is oxidized by selenium dioxide in acetic acid-benzene to give 7a-acetoxy-A -cholestene (2), probably by allylic hydroxylation at C14, allylic rearrangement, and acetylation. Since oxidation occurs readily at room temperature whereas cholesterol is attacked only at 55-60°, the reaction can be used to detect small amounts of A -cholestenol... [Pg.502]

Steroid ketoxides of types (1) and (3), both of which result on dichromate oxidation of A -cholestenyl acetate, are reduced by zinc dust and acetic acid to the corresponding conjugated ketones, (2) and (4). ... [Pg.642]

The nature of the product resulting from selenium dioxide oxidation of an ene or diene depends upon the specific structure and the reaction conditions. Oxidation of A -cholestenyl acetate (1) in acetic acid gives the A -7Q..acetoxy compound (2) oxidation in ethanol benzene gives the A >-7a-ethyl ether. In other instances an ene gives a diene, a diene gives a triene. [Pg.1233]

Dehydration. Wintersteiner and Moore " effected dehydration of 3/3-acetoxy-cholestane-7a-ol by reaction with tosyl chloride in refluxing pyridine and obtained a mixture of stenyl acetates rich in the A -isomer and convertible into pure A "" )-cholestenyl acetate on catalytic rearrangement. [Pg.1325]

See other pages where Cholestenyl is mentioned: [Pg.52]    [Pg.254]    [Pg.87]    [Pg.51]    [Pg.51]    [Pg.367]    [Pg.91]    [Pg.298]    [Pg.299]    [Pg.152]    [Pg.537]    [Pg.384]    [Pg.91]    [Pg.52]    [Pg.254]    [Pg.87]    [Pg.51]    [Pg.51]    [Pg.367]    [Pg.91]    [Pg.298]    [Pg.299]    [Pg.152]    [Pg.537]    [Pg.384]    [Pg.91]   
See also in sourсe #XX -- [ Pg.87 ]



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A* -Cholestenyl acetate

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