Collect. Czech. Chem. Commun. 2000, 65, 380-384
https://doi.org/10.1135/cccc20000380

Synthesis of 21-Hydroxy-6β,19-epoxypregn-4-ene-3,20-dione

Jaroslava Hniličková* and Ladislav Kohout

Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo nám. 2, CZ 166 10 Prague 6, Czech Republic

Individual author index pages


Other CCCC articles of these authors

  • František Franěk*, Tomáš Eckschlager and Ladislav Kohout
    24-Epibrassinolide at Subnanomolar Concentrations Modulates Growth and Production Characteristics of a Mouse Hybridoma
    2003, Vol. 68, Issue 11, pp. 2190–2200 [Abstract]
  • Miroslav Šíša, Miloš Buděšínský and Ladislav Kohout*
    Synthesis and Biological Activity of 7a-Homo- and 7a,7b-Dihomo-5α-cholestane Analogues of Brassinolide
    2003, Vol. 68, Issue 11, pp. 2171–2189 [Abstract]
  • Hana Chodounská, Miloš Buděšínský, Romana Šídová, Miroslav Šíša, Alexander Kasal and Ladislav Kohout*
    Simple NMR Determination of 5α/5β Configuration of 3-Oxosteroids
    2001, Vol. 66, Issue 10, pp. 1529–1544 [Abstract]
  • Ladislav Kohout*, Hana Chodounská, Tomáš Macek and Miroslav Strnad
    Synthesis of (20S)-2α,3α-Dihydroxy-6-oxo-7-oxa-7a-homo-5α-pregnane-20-carboxylic Acid as a Brassinosteroid Part of Ligands for Binding to Affinity Chromatography Carriers
    2000, Vol. 65, Issue 11, pp. 1754–1761 [Abstract]
  • Carme Brosa, Ismael Zamora, Emma Terricabras and Ladislav Kohout
    The Effect of Electrostatic Properties and Abibility to Form Hydrogen-Bonds on the Activity of Brassinosteroid Side-Chain Analogs
    1998, Vol. 63, Issue 10, pp. 1635–1645 [Abstract]
  • Romana Šídová, Karel Stránský, Alexander Kasal, Barbora Slavíková and Ladislav Kohout
    Long-Range Effect of 17-Substituents in 3-Oxo Steroids on 4,5-Double Bond Hydrogenation
    1998, Vol. 63, Issue 10, pp. 1528–1542 [Abstract]
  • Barbora Slavíková, Alexander Kasal and Ladislav Kohout
    N-Benzoyl-N-methylandrostan-17β-amines; 20-Aza Analogues of Brassinolide
    1998, Vol. 63, Issue 5, pp. 655–661 [Abstract]
  • Ladislav Kohout, Barbora Slavíková and Miroslav Strnad
    17a-Oxa-17a-homobrassinosteroid Analogues
    1998, Vol. 63, Issue 5, pp. 646–654 [Abstract]
  • Lucie Dalibová and Ladislav Kohout
    Preparation of Steroid Olefins from Heptafluorobutyrates
    1998, Vol. 63, Issue 4, pp. 549–556 [Abstract]
  • Alexander Kasal, Barbora Slavíková, Ladislav Kohout and Miloš Buděšínský
    The Synthesis of A-Homo-B-norandrostanes: The Effect of a Hydroxyl on the Course of Hydrogenation of the ∆9-Double Bond
    1997, Vol. 62, Issue 10, pp. 1631–1641 [Abstract]
  • Ladislav Kohout, Alexander Kasal and Miroslav Strnad
    Pregnane-Type Brassinosteroids with a Four-Carbon Ester Functionality in Position 20
    1996, Vol. 61, Issue 6, pp. 930–940 [Abstract]
  • Alexander Kasal, Ladislav Kohout and Michal Lebl
    Synthesis of a Scaffold for the Creation of Non-Peptide Libraries
    1995, Vol. 60, Issue 12, pp. 2147–2155 [Abstract]
  • Ladislav Kohout
    7-Oxo-7a-oxa-brassinosteroids with Cholestane Side-Chain
    1994, Vol. 59, Issue 5, pp. 1219–1225 [Abstract]
  • Ladislav Kohout and Alexander Kasal
    7a-Keto-B-homotestosterone and 7a-Keto-B-homoepitestosterone
    1994, Vol. 59, Issue 3, pp. 649–657 [Abstract]
  • Ladislav Kohout
    New Method of Preparation of Brassinosteroids
    1994, Vol. 59, Issue 2, pp. 457–460 [Abstract]
  • Alexander Kasal, Richard Hampl, Zdeněk Putz, Ladislav Kohout and Luboslav Stárka
    Preparation and Properties of Three Immunogens with a Spacer on the β-Side of the Steroid Skeleton and the Effect of Immunogen Structure on Specificity of the Obtained Antisera
    1992, Vol. 57, Issue 10, pp. 2166–2173 [Abstract]
  • Ladislav Kohout and Miroslav Strnad
    Brassinosteroids with Ester Function with Five Carbon Atoms at the 20 Position
    1992, Vol. 57, Issue 8, pp. 1731–1738 [Abstract]
  • Ladislav Kohout
    Syntheis of brassino steroids with a five carbon atom ester functionality in position 17
    1989, Vol. 54, Issue 12, pp. 3348–3359 [Abstract]
  • Ladislav Kohout
    7-Methanesulfonyloxy-3α,5-cyclo-5α-cholestanes
    1989, Vol. 54, Issue 4, pp. 1028–1035 [Abstract]
  • Ladislav Kohout and Miroslav Strnad
    Brassinolide analogues without side chain
    1989, Vol. 54, Issue 4, pp. 1019–1027 [Abstract]
  • Ladislav Kohout, Václav Černý and Miroslav Strnad
    Alternative syntheses of 2α,3α,17β-trihydroxy-7-oxa-B-homo-5α-androstan-6-one and some androstane brassinolide analogs
    1987, Vol. 52, Issue 4, pp. 1026–1042 [Abstract]
  • Ladislav Kohout, Helena Velgová, Miroslav Strnad and Miroslav Kamínek
    Brassino steroids with androstane and pregnane skeleton
    1987, Vol. 52, Issue 2, pp. 476–486 [Abstract]
  • Ladislav Kohout
    Solvolytic reactions of epimeric 3-methanesulfonyloxy-7-benzoyloxy-5α,6α-cyclopropanocholestanes
    1986, Vol. 51, Issue 10, pp. 2222–2231 [Abstract]
  • Ladislav Kohout and Miroslav Strnad
    Brassinosteroids with a cholestane side chain
    1986, Vol. 51, Issue 2, pp. 447–458 [Abstract]
  • Ladislav Kohout, Vijay Kumar Sethi, Jaroslav Zajíček and Alexander Kasal
    Solvolytic reactions of empiric 3-methanesulfonyloxy-7-benzoyloxy-5β,6β-cyclopropanocholestanes
    1986, Vol. 51, Issue 2, pp. 436–446 [Abstract]
  • Ladislav Kohout
    The synthesis of 5,6-cyclopropanocholestanes with oxygen functions in positions 3 and 7
    1986, Vol. 51, Issue 2, pp. 429–435 [Abstract]
  • Alexander Kasal, Ladislav Kohout and Jiří Filip
    4,5-Secoandrostanes by Eschenmoser's reaction
    1985, Vol. 50, Issue 6, pp. 1402–1414 [Abstract]
  • Helena Velgová and Ladislav Kohout
    6,7-Secoandrostane derivatives
    1985, Vol. 50, Issue 4, pp. 962–972 [Abstract]
  • Ladislav Kohout and Jaroslav Zajíček
    Lead tetraacetate oxidation of 3β-acetoxy-B-homo-5α-cholestan-7aβ-ol
    1984, Vol. 49, Issue 1, pp. 301–305 [Abstract]
  • Ladislav Kohout and Alexander Kasal
    Electrophilic addition to the 5,6-double bond in A-nor-3,5-secosteroids
    1983, Vol. 48, Issue 7, pp. 2051–2063 [Abstract]
  • Alexander Kasal, Luboš Stárka, Richard Hampl and Ladislav Kohout
    Preparation and pharmacological properties of 4,5-secopregnane-3,20-dione and its derivatives
    1983, Vol. 48, Issue 7, pp. 2040–2050 [Abstract]
  • Ladislav Kohout, Alexander Kasal, Vlastimil Šanda and Helena Velgová
    Rearrangement of the 16,17-cyclopropano derivatives
    1983, Vol. 48, Issue 1, pp. 173–183 [Abstract]
  • Ladislav Kohout, Vlastimil Šanda and Jan Fajkoš
    Synthesis of two isomeric 16,17-cyclopropano derivatives of 5-pregnene
    1982, Vol. 47, Issue 5, pp. 1503–1513 [Abstract]
  • Alexander Kasal and Ladislav Kohout
    4,5-Secoanalogues of dihydrotestosterone with a cyclopropane ring in the position 5(6)
    1982, Vol. 47, Issue 1, pp. 130–143 [Abstract]
  • Ladislav Kohout
    Synthesis of 5,6-cyclopropanocholestane derivatives with an oxygen function in position 7
    1981, Vol. 46, Issue 8, pp. 1828–1838 [Abstract]
  • František Tureček and Ladislav Kohout
    The stereospecific loss of water from B-homocholestanols under electron impact
    1980, Vol. 45, Issue 9, pp. 2433–2442 [Abstract]
  • Ladislav Kohout and Jan Fajkoš
    Analogues of androgens with a cyclopropane ring in 6α,7α-position
    1980, Vol. 45, Issue 7, pp. 1974–1981 [Abstract]
  • Pavel Kočovský, Ladislav Kohout and Václav Černý
    Participation of 19-substituents in electrophilic additions to 6,7-unsaturated 5α-cholestane and B-homo 5α-cholestane derivatives; A case of competition between the participation of an ambident neighboring group and external nucleophile attack
    1980, Vol. 45, Issue 2, pp. 559–583 [Abstract]
  • Vlastimil Šanda, Ladislav Kohout and Jan Fajkoš
    5,7-Cyclo-B-homopregnane derivatives with the corticoid ketol side chain
    1980, Vol. 45, Issue 1, pp. 269–273 [Abstract]
  • Ladislav Kohout and Jan Fajkoš
    Acetolysis of 4β-methanesulphonyloxy-6β,7aβ-cyclo-B-homo-5α-cholestane
    1979, Vol. 44, Issue 11, pp. 3308–3320 [Abstract]
  • Bruno Schönecker, Dieter Tresselt, Gerd Schubert, Ladislav Kohout and Jan Fajkoš
    1H-NMR investigations. Application of trichloroacetyl isocyanate to structure determination of 3-, 6-, 7-, 7a- and 17-hydroxy steroids
    1978, Vol. 43, Issue 10, pp. 2609–2618 [Abstract]
  • Ladislav Kohout and Jan Fajkoš
    Methylenation of 4,6-cholestadien-3-one
    1978, Vol. 43, Issue 4, pp. 1134–1141 [Abstract]
  • Ladislav Kohout
    2,3-Disubstituted derivatives of the 6β,7aβ-cyclo-B-homo-5α-cholestane series
    1978, Vol. 43, Issue 3, pp. 889–899 [Abstract]
  • Ladislav Kohout and Jan Fajkoš
    Fission of the epimeric 2,3-epoxides in the 5,7β-cyclo-B-homo-5β-cholestane series
    1978, Vol. 43, Issue 2, pp. 638–646 [Abstract]