Collect. Czech. Chem. Commun. 1962, 27, 2765-2770
https://doi.org/10.1135/cccc19622765

On steroids. LXIX. Preparation of (20R)-20-hydroxy-3-oxo-5α-pregnan-18-oic acid (18→20) lactone from 5,6-dihydro-N,N,N',N'-tetramethylholarrhimine

V. Černý and A. Kasal

Individual author index pages


Other CCCC articles of these authors

  • P. Kočovský, V. Černý, S. Vašíčková and M. Synáčková
    Stereochemistry of some 5-methyl-19-nor-5β-cholest-9-ene derivatives
    1977, Vol. 42, Issue 11, pp. 3339–3353 [Abstract]
  • P. Kočovský and V. Černý
    Structural requirements in Westphalen rearrangement
    1977, Vol. 42, Issue 8, pp. 2415–2437 [Abstract]
  • A. Kasal and A. Trka
    Intramolecular hydride shift in some steroid hydroxy aldehydes and hydroxy ketones
    1977, Vol. 42, Issue 4, pp. 1389–1402 [Abstract]
  • P. Kočovský and V. Černý
    Transannular participation of the hydroxyl group in the addition of hypobromous acid to some 5-hydroxy-5α-cholest-2-enes
    1977, Vol. 42, Issue 1, pp. 353–365 [Abstract]
  • P. Kočovský and V. Černý
    Transannular participation of the hydroxyl group in Woodward addition to some 5-hydroxy-5α-cholest-2-enes
    1977, Vol. 42, Issue 1, pp. 163–172 [Abstract]
  • P. Kočovský and V. Černý
    Preparation of some 5-hydroxy-5α-cholest-2-enes
    1977, Vol. 42, Issue 1, pp. 155–162 [Abstract]
  • V. Černý, I. Pavlík and E. Kůstková-Maxová
    Ligand field theory, d-d spectra of ferrocene and other d6-metallocenes
    1976, Vol. 41, Issue 11, pp. 3232–3244 [Abstract]
  • H. Velgová and V. Černý
    4,4-Dimethyl-A-homocholestane derivatives
    1976, Vol. 41, Issue 10, pp. 3131–3137 [Abstract]
  • V. Černý, A. Trka, J. Kohoutová, J. Smolíková and M. Buděšínský
    Base-catalyzed autoxidation of 3α,5-cyclo-5α-cholestan-6-one and 3α,5-cyclo-5α-cholestan-7-one
    1976, Vol. 41, Issue 9, pp. 2788–2811 [Abstract]
  • H. Velgová and V. Černý
    6,7-Secosteroids with potential biological activity
    1976, Vol. 41, Issue 9, pp. 2630–2637 [Abstract]
  • P. Kočovský and V. Černý
    Preparation of some 5-methyl-19-nor-5β-cholestane derivatives
    1976, Vol. 41, Issue 9, pp. 2620–2629 [Abstract]
  • A. Kasal
    Reductive debromination of dibromo steroids
    1976, Vol. 41, Issue 7, pp. 2040–2046 [Abstract]
  • L. Eignerová and A. Kasal
    Intramolecular hydride shift in Oppenauer oxidation of some dihydroxy steroids
    1976, Vol. 41, Issue 4, pp. 1056–1065 [Abstract]
  • A. Kasal
    Reactions of some dibromosteroids with silver salts in the presence of water
    1976, Vol. 41, Issue 1, pp. 140–150 [Abstract]
  • M. Havel and V. Černý
    An alternative route to osladine aglycone from solasodine
    1975, Vol. 40, Issue 10, pp. 3199–3205 [Abstract]
  • V. Černý
    Spin-orbit interaction and magnetic properties of d1-, d2-, d8-, and d9-sandwich complex compounds
    1975, Vol. 40, Issue 6, pp. 1829–1852 [Abstract]
  • M. Havel and V. Černý
    Partial synthesis of osladine aglycone from solasodine
    1975, Vol. 40, Issue 5, pp. 1579–1592 [Abstract]
  • A. Kasal and M. Buděšínský
    Reaction of 5-bromo-6β-chloro-5α-cholestan-3β-ol with silver salts
    1975, Vol. 40, Issue 4, pp. 1231–1239 [Abstract]
  • H. Velgová and V. Černý
    4,4-Dimethyl-A-homoandrostane derivatives
    1974, Vol. 39, Issue 9, pp. 2476–2482 [Abstract]
  • Z. Machková and V. Černý
    Preparation of some amidic 6-ketosteroids as potential inhibitors of postecdysial cuticle sclerotization in Pyrrhocoris apterus L.
    1974, Vol. 39, Issue 4, pp. 1091–1097 [Abstract]
  • A. Kasal and A. Trka
    Reaction of 5,6-dibromosteroids with silver fluoride in the presence of water
    1974, Vol. 39, Issue 2, pp. 603–613 [Abstract]
  • H. Velgová and V. Černý
    On steroids. CLX. A-homosteroids V: Preparation of some further A-homocholestan-4-one derivatives
    1973, Vol. 38, Issue 10, pp. 2976–2982 [Abstract]
  • H. Velgová, V. Černý and F. Šorm
    On steroids. CLVIII. A-homosteroids. IV. A-ring conformation of some A-homo-5α-cholestan-4A-one derivatives
    1973, Vol. 38, Issue 9, pp. 2751–2759 [Abstract]
  • V. Černý
    On steroids. CLV. Reactions of steroidal β-oxo cyclopropanes with Jacques' reagent
    1973, Vol. 38, Issue 5, pp. 1563–1570 [Abstract]
  • H. Velgová and V. Černý
    On steroids. CIL. A-Homosteroids. III. Preparation and reactions of 4α,4aα-epoxy-A-homo-5α-cholestan-6β-yl acetate
    1973, Vol. 38, Issue 2, pp. 575–582 [Abstract]
  • V. Černý, M. Buděšínský and F. Šorm
    On steroids. CXLVIII. Reactions and stereochemistry of some 2-oxygenated A-homo-5α-cholestane derivatives
    1973, Vol. 38, Issue 2, pp. 565–574 [Abstract]
  • V. Černý
    Computer calculation of matrix elements of electron repulsion for a dn-electron system in strong ligand field approximation
    1973, Vol. 38, Issue 2, pp. 317–320 [Abstract]
  • A. Kasal
    On steroids. CXLI. Reaction of silver fluoride with some 6α-bromo-B-norsteroids
    1972, Vol. 37, Issue 9, pp. 3095–3105 [Abstract]
  • A. Kasal and J. Joska
    On steroids. CXXXIX. Addition of hypobromous acid derivatives to 5(6)-unsaturated B-norsteroids
    1972, Vol. 37, Issue 7, pp. 2234–2245 [Abstract]
  • J. Gehlhaus, V. Černý and F. Šorm
    Über Steroide CXXXVII. Über Ringerweiterungsreaktionen von 3α,5-Cyclo-5α-cholestan-6-on mit Diazomethan
    1972, Vol. 37, Issue 4, pp. 1331–1345 [Abstract]
  • H. Velgová, V. Černý and F. Šorm
    On steroids. CXXXVI. Effect of 17-substituent in base-catalyzed equilibration of steroidal 2β,3β-disubstituted 6-ketones
    1972, Vol. 37, Issue 3, pp. 1015–1034 [Abstract]
  • I. Pavlík, V. Černý and E. Maxová
    On the chemistry of sandwich complexes. XVI. The ligand field theory for dicyclopentadienyl d3 and d7 complexes. The d-d transitions and ligand field parameters of vanadocene and some complexes of Cr(III)
    1972, Vol. 37, Issue 1, pp. 171–195 [Abstract]
  • H. Velgová, V. Černý and F. Šorm
    On steroids. CXXXV. A-Homosteroids II: Conformation of the A-ring in 6β-acetoxy-4a α-bromo-A-homo-5α-cholestan-4-one
    1971, Vol. 36, Issue 9, pp. 3165–3170 [Abstract]
  • A. Kasal and F. Šorm
    On steroids. CXXXIV. B-Nor and B-homosteroids with a potential antiandrogenic activity
    1971, Vol. 36, Issue 7, pp. 2507–2516 [Abstract]
  • A. Kasal
    On steroids. CXXXII. Oxidation of 18-benzoylaminoprogesterone with chromium trioxide
    1970, Vol. 35, Issue 12, pp. 3821–3825 [Abstract]
  • I. Pavlík, V. Černý and E. Maxová
    On the chemistry of sandwich complexes. XV. The ligand field theory, electronic spectrum and metal-ligand bonding in nickelocene
    1970, Vol. 35, Issue 10, pp. 3045–3063 [Abstract]
  • H. Velgová and V. Černý
    On steroids. CXXX. A-Homosteroids I: The preparation of 6β-acetoxy-A-homo-5α-cholestan-4-one
    1970, Vol. 35, Issue 8, pp. 2408–2417 [Abstract]
  • V. Černý, A. Kasal and F. Šorm
    On steroids. CXXVIII. Preparation and reactions of some 2-oxygenated 3α,5-cyclo-5α-cholestane derivatives
    1970, Vol. 35, Issue 4, pp. 1235–1254 [Abstract]
  • A. Kasal and O. Linet
    On steroids. CXXVII. Preparation of some cyclic steroidal ethers
    1969, Vol. 34, Issue 11, pp. 3479–3496 [Abstract]
  • H. Velgová, V. Černý, F. Šorm and K. Sláma
    On steroids. CXXVI. Further compounds with antisclerotization effect on Pyrrhocoris apterus L. larvae; Structure and activity correlations
    1969, Vol. 34, Issue 11, pp. 3354–3376 [Abstract]
  • H. Velgová, L. Lábler, V. Černý, F. Šorm and K. Sláma
    On steroids. CXI. Some further compounds producing molting deficiencies in an insect
    1968, Vol. 33, Issue 1, pp. 242–256 [Abstract]
  • V. Černý, L. Dolejš, L. Lábler, F. Šorm and K. Sláma
    On terpenes. CLXXXIX. Dehydrojuvabione - A new compound with juvenile hormone activity from balsam fir
    1967, Vol. 32, Issue 11, pp. 3926–3933 [Abstract]
  • A. Kasal and V. Černý
    On steroids. CVIII. Preparation and properties of some androstan-18-carboxylic acid derivatives
    1967, Vol. 32, Issue 10, pp. 3733–3745 [Abstract]
  • A. Kasal and V. Černý
    On steroids. CI. Preparation of some 18-homopregnane derivatives
    1966, Vol. 31, Issue 7, pp. 2759–2767 [Abstract]
  • V. Černý and F. Šorm
    On steroids. XCVIII. Preparation of some steroidal dihydropyrane derivatives
    1966, Vol. 31, Issue 5, pp. 2231–2237 [Abstract]
  • V. Černý, A. Kasal and F. Šorm
    On steroids. XCVI. Preparation and properties of some 18-oxygenated 18-homopregnane derivatives. A novel reaction of cyanogen bromide with amino alcohols and amino ketones
    1966, Vol. 31, Issue 4, pp. 1752–1784 [Abstract]
  • J. Hora and V. Černý
    On steroids. XCI. A new route for preparation of 18-hydroxyandrost-4-en-3-on-17β-carboxylic acid lactone
    1965, Vol. 30, Issue 4, pp. 1169–1177 [Abstract]
  • A. Kasal, V. Černý and F. Šorm
    On steroids. LXXXIX. Preparation of some 3,5-cyclosteroid hormone analogs
    1965, Vol. 30, Issue 2, pp. 472–480 [Abstract]
  • V. Černý, L. Dolejš and F. Šorm
    On steroids. LXXXVII. Dihydroisoconessimine and 3α-aminoconan-5-ene, new alkaloids from Holarrhena antidysenterica WALL.
    1964, Vol. 29, Issue 7, pp. 1591–1597 [Abstract]
  • L. Lábler and V. Černý
    On steroids. LXXXIV. Thin-layer chromatography of some steroidal bases and Holarrhena alkaloids
    1963, Vol. 28, Issue 11, pp. 2932–2940 [Abstract]
  • L. Lábler, J. Hora and V. Černý
    On steroids. LXXIX. Synthesis of 3α-dimethylaminoconan-5-ene. Corroboration of the structure of holarrhidine
    1963, Vol. 28, Issue 8, pp. 2015–2020 [Abstract]
  • L. Dolejš, V. Hanuš, V. Černý and F. Šorm
    On steroids. LXXVIII. Mass spectra of Holarrhena alkaloids
    1963, Vol. 28, Issue 6, pp. 1584–1592 [Abstract]
  • A. Kasal, A. Poláková, A. V. Kamernitzky, L. Lábler and V. Černý
    On steroids. LXXVI. N3-Methylholarrhimine and N20-methylholarrhimine
    1963, Vol. 28, Issue 5, pp. 1189–1195 [Abstract]
  • A. Kasal, V. Černý and F. Šorm
    On steroids. LXXIII. Preparation of some 18-substituted steroids of androstane type from conessine
    1963, Vol. 28, Issue 2, pp. 411–420 [Abstract]
  • A. Kasal, V. Černý and F. Šorm
    On steroids. LXXI. Mercuric acetate dehydrogenation of conanine derivatives. Preparation of 3-substituted lactams derived from 18-metylamino-5α-etianic acid
    1962, Vol. 27, Issue 12, pp. 2898–2906 [Abstract]
  • J. Hora, V. Černý and F. Šorm
    On steroids. LXX. Cyclopropane ring formation on deamination of 18-amino steroids
    1962, Vol. 27, Issue 12, pp. 2771–2777 [Abstract]
  • J. Hora and V. Černý
    On steroids. LXII. N-Desmethylconan-5,N(20)-dien-3β-ol and a new pathway for preparation of 18-hydroxyprogesterone from conessine
    1961, Vol. 26, Issue 9, pp. 2217–2228 [Abstract]
  • V. Černý, J. Joska and L. Lábler
    On steroids. LIX. Application of thin layer chromatography without binder for rapid analytical and preparative separation of steroids
    1961, Vol. 26, Issue 6, pp. 1658–1668 [Abstract]
  • A. Kasal, V. Černý and F. Šorm
    On steroids. LIII. 18-Benzoylaminoprogesterone and some of its reactions
    1960, Vol. 25, Issue 11, pp. 2849–2854 [Abstract]
  • V. Černý and F. Šorm
    On steroids. LII. Preparation and some reactions of 18-amino-5α-pregnan-3β,20ξ-diol
    1960, Vol. 25, Issue 11, pp. 2841–2848 [Abstract]
  • A. Kasal, V. Černý and F. Šorm
    On steroids. XLIX. Preparation of methylester of 18-dimethylamino-3-oxo-5α-androstan-17β-carboxylic acid
    1960, Vol. 25, Issue 3, pp. 927–933 [Abstract]
  • V. Černý and F. Šorm
    On steroids. XLVII. Partial synthesis of 18-benzoylamino-5α-pregnan-3β-ol-20-one from conessine
    1959, Vol. 24, Issue 12, pp. 4015–4021 [Abstract]
  • V. Černý and L. Lábler
    On steroids. XLV. The isolation of tigogenin from some species of Solanum
    1959, Vol. 24, Issue 10, pp. 3468–3470 [Abstract]
  • P. Zuman and V. Černý
    Polarographie der steroide III. Polarographische reduktion der steroide mit aldehydgruppe in stellung 18
    1959, Vol. 24, Issue 6, pp. 1925–1932 [Abstract]
  • V. Schwarz, V. Černý and F. Šorm
    On steroids. XXXVII. Preparation of methyl 3β,16α-diaetoxybisnorallocholanate and its 20-epimer. A novel synthesis of the side chain of steroidal bisnor-acids
    1959, Vol. 24, Issue 6, pp. 1851–1859 [Abstract]
  • V. Černý, L. Lábler and F. Šorm
    On steroids. XXXIV. The structure of holarrhidine
    1959, Vol. 24, Issue 2, pp. 378–383 [Abstract]
  • L. Lábler and V. Černý
    On steroids. XXXIII. Holarrhidine, a new alkaloid from Holarrhena antidysenterica WALL
    1959, Vol. 24, Issue 2, pp. 370–377 [Abstract]
  • V. Schwarz, V. Černý and F. Šorm
    Über steroide XXX. Synthese der 3β-acetoxy-16α-hydroxyalloätiansäure
    1958, Vol. 23, Issue 5, pp. 940–945 [Abstract]
  • V. Černý and F. Šorm
    On steroids. XXV. The synthesis of some 16-substituted derivatives of 3β-hydroxyallopregnan-21-oic acid and 3β-hydroxyallopregn-17-en-21-oic acid
    1957, Vol. 22, Issue 1, pp. 85–92 [Abstract]
  • V. Černý, L. Lábler and F. Šorm
    On steroids. XXIV. The structure of holarrhimine
    1957, Vol. 22, Issue 1, pp. 76–84 [Abstract]
  • L. Lábler, V. Černý and F. Šorm
    On steroids. XIX. Structural correlation of holarrhimine with conessine
    1955, Vol. 20, Issue 6, pp. 1484–1489 [Abstract]
  • V. Černý and F. Šorm
    On steroids. XVII. The nature of the hydroxyl group in holarrhimine
    1955, Vol. 20, Issue 6, pp. 1473–1477 [Abstract]
  • L. Lábler, V. Černý and F. Šorm
    On steroids. XII. The configuration of some 3-dimethylamino derivatives of cholestane
    1954, Vol. 19, Issue 6, pp. 1249–1257 [Abstract]
  • J. Joska, V. Černý and F. Šorm
    On steroids. X. Some dimethylamino derivatives of allopregnane
    1954, Vol. 19, Issue 3, pp. 551–558 [Abstract]
  • F. Šorm, L. Lábler and V. Černý
    On steroids. VI. 3-Dimethylamino derivatives of steroids
    1953, Vol. 18, Issue 6, pp. 842–853 [Abstract]
  • F. Šorm and V. Černý
    On steroids. IV. A new synthesis of Δ5-3-hydroxyetienic acid from 17-ketoandrostene-(5)
    1953, Vol. 18, Issue 3, pp. 407–412 [Abstract]