Results 141 to 150 of about 514 (159)

The reduction of 5α-cholestan-3-one and 5β-cholestan-3-one by some boranes and hydroborates

Steroids, 1979
This paper describes the high yield synthesis of 5 alpha-cholestan-3 alpha-ol and 5 beta-cholestan-3 beta-ol by the reduction of 5 alpha- and 5 beta-cholestan-3-one using using potassium and lithium-tri-sec-butyl-hydroborates as reducing reagents. Attempts to obtain the same alcohols using other bulky boranes resulted in the equatorial products.
R, Contreras, L, Mendoza
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Identification of isomers of cholestane, C27H48

Journal of the Chemical Society, Chemical Communications, 1974
The properties of 5α-cholestane and six stereoisomers have been studied to evaluate methods of identification of steranes from gelogical sources.
Lawrence J. Mulheirn, George Ryback
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Synthese von 22,26-Imino-cholestan-Derivaten

Experientia, 1961
3β, 16α-diacetoxy-5α-pregnane-20-one and the analogue pregn-5-ene derivative have been converted into (22R, 25R)-22, 26-imino-5α-cholestane-3β, 16α-diol. The configuration at C-22 and C-25 was determined by transformation into the known (22R, 25R)-5α-solanidane-3-one.
K. Schreiber, G. Adam
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Cholestane rhamnosides from the bulbs of Ornithogalum saundersiae

Phytochemistry, 1999
Phytochemical examination of the bulbs of Ornithogalum saundersiae yielded six cholestane rhamnosides, two of which had previously been isolated from the same plant material. However, detailed spectroscopic analysis of the aglycone led us to revise the configuration of the C-11 hydroxyl group of the latter two and reassign their structures as (22S ...
M, Kuroda, Y, Mimaki, Y, Sashida
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ChemInform Abstract: HETEROCYCLIC DERIVATIVES OF CHOLESTANE

Chemischer Informationsdienst, 1974
Abstract3‐Cholestanon (II) liefert bei der Behandlung mit Schwefel und Malodinitril in Morpholin bei 48°C nicht die Thiophenderivate (I) oder (IV), sondern das Isomere (III).
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MONOLAYER STUDIES OF 3‐NITROXIDE CHOLESTANE*

Annals of the New York Academy of Sciences, 1972
D A, Cadenhead, R J, Demchak, F, Muller-Landau   +2 more
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Cholestane

2021
openaire   +1 more source

2,2‐Dibrom‐cholestan‐3‐on

Zeitschrift für Chemie, 1984
Johannes Römer, Dieter Scheller
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Heterocyclic derivatives of cholestane

The Journal of Organic Chemistry, 1973
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Cholestane derivatives

Molecular Crystals and Liquid Crystals, 1984
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