Collect. Czech. Chem. Commun. 1987, 52, 2744-2752
https://doi.org/10.1135/cccc19872744

E-seco-Acids of pentacyclic triterpenoids. Oxidative cleavage of ring E in 3β-acetoxy-21-oxo-18α,19βH-ursan-28→20β-olide

Eva Klinotová, Helena Pavlíková, Martina Pressová, Hana Chodounská, Jiří Klinot, Jiří Protiva and Alois Vystrčil

Department of Organic Chemistry, Charles University, 128 40 Prague 2

Individual author index pages


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  • Jan Sejbal, Jiří Klinot, Miloš Buděšínský and Jiří Protiva
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  • Eva Klinotová, Václav Křeček, Jiří Klinot, Magdalena Endová, Jana Eisenreichová, Miloš Buděšínský and Martin Štícha
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  • Jiří Protiva, Thi Thu Huong Nguyen, Jiří Urban and Eva Klinotová
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  • Jan Sejbal, Jiří Klinot and Miloš Buděšínský
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  • Jan Sejbal, Jiří Klinot and Miloš Buděšínský
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  • Luboš Arnold, Martina Pressová, David Šaman, Martin Vogtherr and Stefan Limmer
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  • Václav Křeček, Stanislav Hilgard, Miloš Buděšínský and Alois Vystrčil
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  • Thi Thu Huong Nguyen, Jiří Urban, Eva Klinotová, Jan Sejbal, Jiří Protiva, Pavel Drašar and Miroslav Protiva
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    1994, Vol. 59, Issue 2, pp. 435–443 [Abstract]
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    1993, Vol. 58, Issue 10, pp. 2505–2516 [Abstract]
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    1993, Vol. 58, Issue 7, pp. 1675–1691 [Abstract]
  • Eva Klinotová, Jiří Klinot, Václav Křeček, Miloš Buděšínský and Bohumil Máca
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    1993, Vol. 58, Issue 1, pp. 173–190 [Abstract]
  • Václav Křeček, Miloš Buděšínský and Alois Vystrčil
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    1992, Vol. 57, Issue 3, pp. 556–564 [Abstract]
  • Jan Sejbal, Jiří Klinot, Miloš Buděšínský and Jiří Protiva
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    1991, Vol. 56, Issue 12, pp. 2936–2949 [Abstract]
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    1991, Vol. 56, Issue 12, pp. 2917–2935 [Abstract]
  • Vladimír Pouzar, Hana Chodounská, Ivan Černý and Pavel Drašar
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  • Jan Sejbal, Jiří Klinot and Miloš Buděšínský
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    1991, Vol. 56, Issue 5, pp. 966–972 [Abstract]
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    1991, Vol. 56, Issue 4, pp. 886–904 [Abstract]
  • Hana Chodounská and Vladimír Pouzar
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    1990, Vol. 55, Issue 6, pp. 1639–1646 [Abstract]
  • Jiří Protiva, Jaroslav Pecka, Jiří Urban and Jiří Zima
    Synthesis of 20-iodoeicosanoic and 20-[125I]-iodoeicosanoic acids
    1990, Vol. 55, Issue 6, pp. 1546–1554 [Abstract]
  • Vladimír Pouzar, Hana Chodounská, Dalibor Sameš, Pavel Drašar and Miroslav Havel
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    1990, Vol. 55, Issue 5, pp. 1243–1256 [Abstract]
  • Jiří Klinot, Miloš Buděšínský and Jarmil Světlý
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    1990, Vol. 55, Issue 3, pp. 766–781 [Abstract]
  • Miloš Buděšínský and Jiří Klinot
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    1989, Vol. 54, Issue 7, pp. 1928–1939 [Abstract]
  • Jan Sejbal, Eva Klinotová, Markéta Bludská, Jiří Klinot and Miloš Buděšínský
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    1989, Vol. 54, Issue 4, pp. 1036–1042 [Abstract]
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  • Jiří Klinot, Jaroslav Podlaha, Jana Podlahová, Stanislav Hilgard and Eva Klinotová
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  • Jiří Klinot, Jaroslav Podlaha, Jana Podlahová, Karel Malý and Václav Petříček
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    1989, Vol. 54, Issue 3, pp. 725–736 [Abstract]
  • Martina Pressová and Jiří Smrt
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    1989, Vol. 54, Issue 2, pp. 487–497 [Abstract]
  • Jiří Klinot, Jiří Liška, Alena Forgáčová, Miloš Buděšínský, Jiří Protiva, Stanislav Hilgard and Alois Vystrčil
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    1989, Vol. 54, Issue 2, pp. 413–429 [Abstract]
  • Jiří Klinot, Jan Sejbal and Alois Vystrčil
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    1989, Vol. 54, Issue 2, pp. 400–412 [Abstract]
  • Wilhelm Bartmann, Gerhard Beck, Wolfram Fehlhaber and Jiří Protiva
    Synthese von (8RS,9SR,11RS,13E,15R)-(±)-1,2,3,4-tetranor-9,11,15-trihydroxy-16,16-dimethyl-18-oxa-13-prostensäure
    1989, Vol. 54, Issue 1, pp. 189–195 [Abstract]
  • Jan Sejbal, Jiří Klinot and Alois Vystrčil
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    1988, Vol. 53, Issue 1, pp. 118–131 [Abstract]
  • Jiří Protiva, Václav Křeček, Ladislav Lešetický and Petr Sedmera
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    1987, Vol. 52, Issue 9, pp. 2274–2280 [Abstract]
  • Jan Sejbal, Jiří Klinot and Alois Vystrčil
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    1987, Vol. 52, Issue 4, pp. 1052–1061 [Abstract]
  • Jiří Protiva, Rudolf Očadlík, Eva Klinotová, Jiří Klinot and Alois Vystrčil
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    1987, Vol. 52, Issue 2, pp. 501–507 [Abstract]
  • Jiří Klinot, Jiří Rozen, Eva Klinotová and Alois Vystrčil
    A-nor-derivatives of 19β,28-epoxy-18α-oleanane: Preparation and stereochemistry
    1987, Vol. 52, Issue 2, pp. 493–500 [Abstract]
  • Jan Sejbal, Jiří Klinot and Alois Vystrčil
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    1987, Vol. 52, Issue 2, pp. 487–492 [Abstract]
  • Jiří Klinot, Jarmil Světlý, Eva Klinotová, Miloš Buděšínský and Alois Vystrčil
    Preparation of isomeric 2-methyl-1-oxotriterpenoids of the 18α-oleanane series; Conformation of ring A
    1986, Vol. 51, Issue 12, pp. 2869–2878 [Abstract]
  • Jiří Protiva, Eva Klinotová, Jiří Klinot, Miroslav Kušiak and Alois Vystrčil
    Reduction of triterpenoid ketones by chloroiridic acid and trimethyl phosphite
    1986, Vol. 51, Issue 9, pp. 2029–2033 [Abstract]
  • Jiří Klinot, Milan Jirsa, Eva Klinotová, Karel Ubik and Jiří Protiva
    Isolation of (23R) 3α, 7α,23-trihydroxy-5β-cholan-24-oic (β-phocaecholic) acid from duck bile. 1H NMR spectra of its derivatives
    1986, Vol. 51, Issue 8, pp. 1722–1730 [Abstract]
  • Jiří Protiva, Jaroslav Pecka, Eva Klinotová and Miloš Procházka
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    1986, Vol. 51, Issue 4, pp. 872–878 [Abstract]
  • Václav Křeček, Jiří Protiva, Miloš Buděšínský, Eva Klinotová and Alois Vystrčil
    Preparation of C(18)-empiric 20,29,30-trinorlupane derivatives. 1H, 13C NMR and mass spectra
    1986, Vol. 51, Issue 3, pp. 621–635 [Abstract]
  • Jiří Klinot, Václav Všetečka, Eva Klinotová and Alois Vystrčil
    Conformation of ring A in 3-oxotriterpenoids. Dipole moments and CD spectra
    1986, Vol. 51, Issue 3, pp. 611–620 [Abstract]
  • Jiří Klinot, Miloš Buděšínský, Eva Klinotová and Alois Vystrčil
    Conformation of the A ring in 1-oxo and 3-oxotriterpenoids. Vicinal interproton coupling constants
    1986, Vol. 51, Issue 3, pp. 593–610 [Abstract]
  • Alois Vystrčil, Václav Křeček, Miloš Buděšínský and Jiří Protiva
    Isomeric oximes of 30-norlupan-20-one and its derivatives
    1986, Vol. 51, Issue 3, pp. 581–592 [Abstract]
  • Jan Sejbal, Jiří Klinot, Jiří Protiva and Alois Vystrčil
    Reactions of triterpenoid ketones with sulfur and morpholine under the conditions of Willgerodt-Kindler reaction
    1986, Vol. 51, Issue 1, pp. 118–127 [Abstract]
  • Jiří Klinot, Jarmil Světlý, Eva Klinotová and Alois Vystrčil
    Preparation of isomeric 2-methyl-3-oxolupane-28-nitriles
    1985, Vol. 50, Issue 12, pp. 2918–2924 [Abstract]
  • Jan Sejbal, Jiří Klinot, Daniela Hrnčířová and Alois Vystrčil
    Oxidation of 19β,28-epoxy-18α-oleanan-3-one and -1-one with peracids
    1985, Vol. 50, Issue 12, pp. 2753–2759 [Abstract]
  • Růžena Míčková, Hana Hutlová, Pavel Pihera, Jiří Protiva and Vladimír Schwarz
    Isolation and the structure of the products of cholesterol biodegradation by the mutant Mycobacterium sp. CCM 3529
    1985, Vol. 50, Issue 5, pp. 1110–1113 [Abstract]
  • Vladimír Schwarz, Pavel Pihera, Jiří Protiva and Růžena Míčková
    Biodegradation of cholesterol by a mutant of the Mycobacterium species
    1984, Vol. 49, Issue 11, pp. 2713–2719 [Abstract]
  • Václav Bártl, Vojtěch Kmoníček, Zdeněk Šedivý, Emil Svátek, Jiří Protiva and Miroslav Protiva
    Thioxanthene derivatives of pharmacological interest: 1,2,4-Trichloro and 2,4,5,6-tetrachloro derivatives of 9-(3-dimethylaminopropylidene)thioxanthene
    1984, Vol. 49, Issue 10, pp. 2295–2308 [Abstract]
  • Jiří Jílek, Josef Pomykáček, Jiří Holubek, Emil Svátek, Miroslav Ryska, Jiří Protiva and Miroslav Protiva
    Reactions of 4,4'-disubstituted diphenyl sulfides with chloroacetyl chloride and aluminium chloride
    1984, Vol. 49, Issue 3, pp. 603–620 [Abstract]
  • Eva Klinotová, Jiří Protiva, Jiří Klinot and Alois Vystrčil
    Reaction of 30-nor-18-lupene derivatives with bromine and peracids
    1984, Vol. 49, Issue 1, pp. 141–149 [Abstract]
  • Eva Klinotová, Jiří Klinot, Jiří Protiva, Jiří Urban and Alois Vystrčil
    Reaction of 30-nor-19(20)-lupene derivatives with bromine
    1983, Vol. 48, Issue 12, pp. 3444–3454 [Abstract]
  • Ján Galoci, Miloš Procházka and Eva Klinotová
    Pyrolysis of 2-acetoxycarboxylic acids
    1983, Vol. 48, Issue 6, pp. 1729–1733 [Abstract]
  • Alois Vystrčil, Václav Křeček and Miloš Buděšínský
    Elimination reaction of angular hydroxymethyl groups of 20(29)-lupene derivatives
    1983, Vol. 48, Issue 5, pp. 1499–1507 [Abstract]
  • Jiří Protiva, Václav Křeček, Josefa Křečková, Eva Klinotová and Alois Vystrčil
    The synthesis and the mass spectra of 28,29,30-trinoroleanane derivatives with a double bond in the ring E or D
    1983, Vol. 48, Issue 3, pp. 928–936 [Abstract]
  • Irena Valterová, Jiří Klinot and Alois Vystrčil
    Preparation and antibacterial activity of di-, tri- and tetraoic acids derived from 3,4-secolupane
    1983, Vol. 48, Issue 2, pp. 649–661 [Abstract]
  • Karel Šindelář, Jiřina Metyšová, Jiří Holubek, Emil Svátek, Jiří Protiva and Miroslav Protiva
    Tricyclic psychotropic agents containing two chalcogen atoms in the central ring: 8-Substituted 6-(4-piperidyl)-6H-dibenz[b,e]-1,4-oxathiepins
    1982, Vol. 47, Issue 11, pp. 3077–3093 [Abstract]
  • Karel Šindelář, Jiří Holubek, Miroslav Ryska, Antonín Dlabač, Jiřina Metyšová, Emil Svátek, Marta Hrubantová, Jiří Protiva and Miroslav Protiva
    Tricyclic psychotropic agents containing two chalcogen atoms in the central ring: Derivatives of 11H-dibenz[b,f]-1,4-oxathiepin
    1982, Vol. 47, Issue 3, pp. 967–983 [Abstract]
  • Jiří Protiva, Luděk Lepša, Eva Klinotová, Jiří Klinot, Václav Křeček and Alois Vystrčil
    Homogeneous hydrogenation and deuteration of pentacyclic triterpenoids: Double bonds in side-chains
    1981, Vol. 46, Issue 11, pp. 2734–2741 [Abstract]
  • Jiří Protiva, Eva Klinotová, Hana Skorkovská and Alois Vystrčil
    Mass spectra of 18α,19βH-ursane derivatives with a lactone arrangement of the ring E
    1981, Vol. 46, Issue 4, pp. 1023–1030 [Abstract]
  • Karel Šindelář, Miroslav Ryska, Jiří Holubek, Emil Svátek, Jiřina Metyšová, Jiří Protiva and Miroslav Protiva
    Fluorinated tricyclic neuroleptics with prolonged action: 3-Fluoro-8-trifluoromethyl derivatives of 10-(4-methylpiperazino)- and 10-[4-(2-hydroxyethyl)piperazino]-10,11-dihydrodibenzo-[b,f]thiepin
    1981, Vol. 46, Issue 1, pp. 118–140 [Abstract]
  • Jiří Protiva, Hana Skorkovská, Jiří Urban and Alois Vystrčil
    Triterpenes and steroids from ganoderma applanatum
    1980, Vol. 45, Issue 10, pp. 2710–2713 [Abstract]
  • Eva Klinotová, Hana Skorkovská, Jiří Protiva, Jiří Urban and Alois Vystrčil
    Isomerization of ketolactone of oxabicyclo[2.2.2]octane pattern in the E ring of ursane derivatives
    1980, Vol. 45, Issue 8, pp. 2351–2359 [Abstract]
  • Irena Valterová, Jiří Klinot and Alois Vystrčil
    3,4-Seco-3,28-lupanedioic acids substituted in the side chain at C(5)
    1980, Vol. 45, Issue 7, pp. 1964–1973 [Abstract]
  • Eva Klinotová, Hana Skorkovská, Jiří Protiva and Alois Vystrčil
    Structure and the properties of 18α,19βH-ursane derivatives with a lactone bridge to ring E
    1980, Vol. 45, Issue 5, pp. 1366–1378 [Abstract]
  • Jiří Klinot, Jarmil Světlý, Dagmar Kudláčková, Miloš Buděšínský and Alois Vystrčil
    Preparation of 2-methyl-3-oxo triterpenoids of 18α-oleanane series and the conformation of ring A
    1979, Vol. 44, Issue 1, pp. 211–225 [Abstract]
  • Vladimír Pouzar and Alois Vystrčil
    Preparation of 12,20-disubstituted lupane derivatives
    1979, Vol. 44, Issue 1, pp. 194–210 [Abstract]
  • Eva Klinotová, Stanislav Bosák and Alois Vystrčil
    The preparation of 19αH-lupeol acetate and its derivatives
    1978, Vol. 43, Issue 8, pp. 2204–2216 [Abstract]
  • Vladimír Pouzar and Alois Vystrčil
    Preparation of 29-acetoxy-30-norlupan-20-one derivatives with the substituted ring C
    1978, Vol. 43, Issue 8, pp. 2190–2203 [Abstract]