Collect. Czech. Chem. Commun. 2000, 65, 1339-1356
https://doi.org/10.1135/cccc20001339

Preparation and Conformational Analysis of 1,2-Seco Derivatives of 19β,28-Epoxy-18α-oleanane

Jan Sejbal*, Martina Homolová, Iva Tišlerová and Václav Křeček

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

Individual author index pages


Other CCCC articles of these authors

  • Martin Dračínský, Simona Hybelbauerová, Jan Sejbal and Miloš Buděšínský*
    Preparation and Conformational Study of B-Ring Substituted Lupane Derivatives
    2006, Vol. 71, Issue 8, pp. 1131–1160 [Abstract]
  • Jiří Zedník*, Jan Sejbal, Jan Svoboda, Jan Sedláček and Jiří Vohlídal
    Structure Dynamics and Isomerism of Bis[μ-(2-methylphenolato)]bis[(η2:η2-cycloocta-1,5-diene)rhodium(I)] Complex
    2006, Vol. 71, Issue 3, pp. 423–433 [Abstract]
  • Martin Dračínský, Václav Richtr, Václav Křeček, Jan Sejbal, Jiří Klinot and Miloš Buděšínský*
    Preparation and Conformational Study of 19β,28-Epoxy-18α-olean-5-ene Derivatives
    2006, Vol. 71, Issue 3, pp. 387–410 [Abstract]
  • Iva Tišlerová*, Václav Richtr and Jiří Klinot
    Conformation Study of A-Ring in 19β,28-Epoxy-2-fluoro-18α-oleananes
    2006, Vol. 71, Issue 3, pp. 368–386 [Abstract]
  • Irena Němcová*, Karel Nesměrák, Božena Kafková and Jan Sejbal
    Physicochemical Properties of 9-(Alkylsulfanyl)- and 9-(Arylsulfanyl)acridine Derivatives and Their Interaction with (2-Hydroxypropyl)cyclodextrins
    2006, Vol. 71, Issue 2, pp. 179–189 [Abstract]
  • Miroslav Kvasnica, Iva Tišlerová, Jan Šarek*, Jan Sejbal and Ivana Císařová
    Preparation of New Oxidized 18-α-Oleanane Derivatives
    2005, Vol. 70, Issue 9, pp. 1447–1464 [Abstract]
  • Karel Zelenka, Tomáš Trnka, Iva Tišlerová, Vladimír Král, Mykhaylo Dukh and Pavel Drašar*
    Synthesis of Porphyrin Receptors Modified by Glycosylated Steroids
    2004, Vol. 69, Issue 5, pp. 1149–1160 [Abstract]
  • Iva Tišlerová*, Eva Klinotová, Jiří Klinot, Jan Sejbal, Martin Rejzek and Stanislav Hilgard
    Preparation of E-Secolupane Acids and Lactones
    2003, Vol. 68, Issue 4, pp. 751–778 [Abstract]
  • Petr Bartoš, Miloslav Černý*, Iva Tišlerová and Tomáš Trnka
    Synthesis of Unsaturated Sulfur-Linked (1→4)-Disaccharides by Substitution of Tosyloxy Group in 1,6-Anhydro-3,4-dideoxy-2-O-tosyl-β-D-erythro-hex-3-enopyranose with 1-Thiohexopyranoses
    2000, Vol. 65, Issue 11, pp. 1737–1744 [Abstract]
  • Eva Klinotová*, Jitka Čermáková, Martin Rejzek, Václav Křeček, Jan Sejbal, Petr Olšovský and Jiří Klinot
    Reaction of 18β,19β-Epoxylupan-21-one Derivatives with Acids: A Way to 21,22-Disubstituted Lup-18-ene Triterpenoids
    1999, Vol. 64, Issue 2, pp. 329–347 [Abstract]
  • Jan Sejbal, Jiří Klinot, Miloš Buděšínský and Jiří Protiva
    Functionalization of Lupane-3β,28-diyl Diacetate with Chromium(VI) Oxide. Part 2
    1997, Vol. 62, Issue 12, pp. 1905–1918 [Abstract]
  • Eva Klinotová, Václav Křeček, Jiří Klinot, Magdalena Endová, Jana Eisenreichová, Miloš Buděšínský and Martin Štícha
    Glycosylation of Triterpene Alcohols and Acids of the Lupane and A-Secolupane Series
    1997, Vol. 62, Issue 11, pp. 1776–1798 [Abstract]
  • Jan Sejbal, Jiří Klinot and Miloš Buděšínský
    Functionalization of Lupane with Chromium(VI) Oxide. A Remark on the Structure of Clerodone
    1996, Vol. 61, Issue 9, pp. 1371–1379 [Abstract]
  • Jan Sejbal, Jiří Klinot and Miloš Buděšínský
    Oleanane Triterpenoids Functionalized at C-25 and C-26
    1996, Vol. 61, Issue 9, pp. 1360–1370 [Abstract]
  • Václav Křeček, Stanislav Hilgard, Miloš Buděšínský and Alois Vystrčil
    E-Homolupane Derivatives Substituted in Position 17 and 22a. 1H NMR, 13C NMR and IR Spectra
    1995, Vol. 60, Issue 4, pp. 619–635 [Abstract]
  • Thi Thu Huong Nguyen, Jiří Urban, Eva Klinotová, Jan Sejbal, Jiří Protiva, Pavel Drašar and Miroslav Protiva
    Synthesis of Several Hydroxylated 23-(Benzimidazol-2-yl-, Benzoxazol-2-yl and Benzothiazol-2-yl)norcholanes and Some Related Compounds
    1995, Vol. 60, Issue 2, pp. 257–275 [Abstract]
  • Magdalena Endová, Eva Klinotová, Jan Sejbal, Bohumil Máca, Jiří Klinot and Jiří Protiva
    Preparation of 2,3-Secodiacids of the Lupane Series
    1994, Vol. 59, Issue 6, pp. 1420–1429 [Abstract]
  • Jiří Protiva, Václav Křeček, Luděk Vlk, Hana Malinová, Eva Klinotová, Bohumil Máca and Jiří Urban
    Indirect Iodination of Estrogenes via Triazenes
    1993, Vol. 58, Issue 11, pp. 2729–2736 [Abstract]
  • Eva Klinotová, Martin Rejzek, Hana Zůnová, Jan Sejbal, Jiří Klinot and Jiří Urban
    Oxidation of 3β,28-Diacetoxy-18-lupen-21-one with Peroxy Acids: A Way to Des-E-lupane Derivatives
    1993, Vol. 58, Issue 10, pp. 2505–2516 [Abstract]
  • Eva Klinotová, Jiří Klinot, Václav Křeček, Stanislav Hilgard, Miloš Buděšínský and Jan Malát
    Structure of Dimeric Compounds Obtained from 3β-Acetoxy-21,22-dioxo-18α,19βH-ursan-28,20β-olide
    1993, Vol. 58, Issue 7, pp. 1675–1691 [Abstract]
  • Eva Klinotová, Jiří Klinot, Václav Křeček, Miloš Buděšínský and Bohumil Máca
    21,22-Disubstituted 18α,19βH-Ursane Derivatives with Oxabicyclooctane System in Ring E
    1993, Vol. 58, Issue 1, pp. 173–190 [Abstract]
  • Václav Křeček, Miloš Buděšínský and Alois Vystrčil
    Preparation of 20R and 20S Acetylamino-30-norlupane Derivatives
    1992, Vol. 57, Issue 3, pp. 556–564 [Abstract]
  • Jan Sejbal, Jiří Klinot, Miloš Buděšínský and Jiří Protiva
    Functionalization of 3β,28-lupanediol diacetate with chromium(VI) oxide
    1991, Vol. 56, Issue 12, pp. 2936–2949 [Abstract]
  • Eva Klinotová, Václav Křeček, Jiří Klinot, Miloš Buděšínský, Jaroslav Podlaha, Jana Podlahová and Jiří Ječný
    An unusual reaction of a bridged triterpenoid α-diketone with acetic anhydride
    1991, Vol. 56, Issue 12, pp. 2917–2935 [Abstract]
  • Jan Sejbal, Jiří Klinot and Miloš Buděšínský
    Photolyses and pyrolyses of triterpenoid nitrites
    1991, Vol. 56, Issue 8, pp. 1732–1743 [Abstract]
  • Alois Vystrčil, Václav Křeček, Jiří Protiva and Miloš Buděšínský
    Anhydrobetulin and its derivatives
    1991, Vol. 56, Issue 4, pp. 886–904 [Abstract]
  • Jan Sejbal, Eva Klinotová, Markéta Bludská, Jiří Klinot and Miloš Buděšínský
    Conversion of betulin into careyagenolide (2α,3β-dihydroxy-18α,19βH-ursan-28,20β-olide)
    1989, Vol. 54, Issue 4, pp. 1036–1042 [Abstract]
  • Jiří Protiva, Václav Křeček, Bohumil Máca, Jiří Urban, Miloš Buděšínský and Miloš Procházka
    Synthesis of 4-(N-acetyl-L-tyrosyl)amino-2-iodobenzoic acid
    1989, Vol. 54, Issue 4, pp. 1012–1018 [Abstract]
  • Jiří Klinot, Jan Sejbal and Alois Vystrčil
    Triterpenoid 2,3-ketols, diols and their acetates: Preparation and conformation of the ring A
    1989, Vol. 54, Issue 2, pp. 400–412 [Abstract]
  • Jan Sejbal, Jiří Klinot and Alois Vystrčil
    Photolysis of 19β,28-epoxy-18α-oleanan-2β-ol nitrites: Functionalization of 10β- and 8β-methyl groups
    1988, Vol. 53, Issue 1, pp. 118–131 [Abstract]
  • Jiří Protiva, Václav Křeček, Ladislav Lešetický and Petr Sedmera
    New intermediate for rapid synthesis of N-isopropyl-2-amino-1-(4-iodophenyl)propane (N-isopropyl-4-iodoamphetamine), labelled with radioactive iodine
    1987, Vol. 52, Issue 9, pp. 2274–2280 [Abstract]
  • Jan Sejbal, Jiří Klinot and Alois Vystrčil
    Reaction of 3-keto and 2-ketotriterpenoids with 3-chloroperoxybenzoic acid in aliphatic alcohols. A new method of preparation of α-hydroxy ketones
    1987, Vol. 52, Issue 4, pp. 1052–1061 [Abstract]
  • Jan Sejbal, Jiří Klinot and Alois Vystrčil
    Oxidation of 3β,28-lupanediol diacetate and lupane with peroxyacetic acid
    1987, Vol. 52, Issue 2, pp. 487–492 [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]
  • 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]
  • 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]
  • 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]
  • 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]