Collect. Czech. Chem. Commun.
1980, 45, 1964-1973
https://doi.org/10.1135/cccc19801964
3,4-Seco-3,28-lupanedioic acids substituted in the side chain at C(5)
Irena Valterová, Jiří Klinot and Alois Vystrčil
Department of Organic Chemistry, Charles University, 128 40 Prague 2
Individual author index pages
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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] - Iva Tišlerová*, Eva Klinotová, Jiří Klinot, Jan Sejbal, Martin Rejzek and Stanislav Hilgard
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2003, Vol. 68, Issue 4, pp. 751–778 [Abstract] - Aleš Svatoš*, Klára Urbanová and Irena Valterová
The First Synthesis of Geranyllinalool Enantiomers
2002, Vol. 67, Issue 1, pp. 83–90 [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] - Karel Stránský and Irena Valterová
Gas Chromatography and Mass Spectrometry of Isomeric Cyclohexylnonadecanes and 1-Cyclopentylicosane
1998, Vol. 63, Issue 10, pp. 1513–1521 [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] - Irena Valterová, Aleš Svatoš and Oldřich Hovorka
Analysis of the Labial Gland Secretion of the Cuckoo-Bumblebee (Psithyrus vestalis) Males and Synthesis of Abundant Geranylcitronellol
1996, Vol. 61, Issue 10, pp. 1501–1508 [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] - 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 Novotný, Jaroslav Podlaha and Jiří Klinot
Crystal Structure and Conformation of Ring A of 2β-Bromo-19β,28-epoxy-18α-oleanan-3-one
1993, Vol. 58, Issue 11, pp. 2737–2744 [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] - Irena Valterová, Miloš Buděšínský and Jan Vrkoč
Defensive substances from the frontal gland secretion of Nasutitermes nigriceps termite soldiers
1991, Vol. 56, Issue 12, pp. 2969–2977 [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] - Jiří Klinot, Stanislav Hilgard, Jakub Krijt and Petr Olšovský
Infrared spectra of 2α-substituted 3-oxotriterpenoids and conformation of ring A
1991, Vol. 56, Issue 5, pp. 966–972 [Abstract] - Alois Vystrčil, Václav Křeček, Jiří Protiva and Miloš Buděšínský
Anhydrobetulin and its derivatives
1991, Vol. 56, Issue 4, pp. 886–904 [Abstract] - Irena Valterová, Miloš Buděšínský, Jan Vrkoč and Glenn D. Prestwich
(8Z)-1(15),8(9)-Trinervitadien-3α-ol from Nasutitermes nigriceps termites. The revised structure for a deffense compound of Trinervitermes gratiosus termites
1990, Vol. 55, Issue 6, pp. 1580–1585 [Abstract] - Jiří Klinot, Miloš Buděšínský and Jarmil Světlý
Conformation of ring A in triterpenoid and 4,4-dimethylsteroid 3-ketones. Chemical shifts of methyl protons and lanthanide and benzene induced shifts
1990, Vol. 55, Issue 3, pp. 766–781 [Abstract] - Aleš Svatoš, Irena Valterová, David Šaman and Jan Vrkoč
Direct esterification of 2-methoxy-2-phenyl-3,3,3-trifluoropropionic acid: A reinvestigation
1990, Vol. 55, Issue 2, pp. 485–490 [Abstract] - Miloš Buděšínský and Jiří Klinot
Conformation of ring A in triterpenoid ketones. Carbon-13 chemical shifts and spin-lattice relaxation times of lupane and 18α-oleanane derivatives
1989, Vol. 54, Issue 7, pp. 1928–1939 [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 Klinot, Jaroslav Podlaha, Jana Podlahová, Stanislav Hilgard and Eva Klinotová
Conformation of ring A of 19β,28-epoxy-18α-oleanan-3-one in solution and in the solid state. Crystal structure and carbon-deuterium stretching frequencies
1989, Vol. 54, Issue 3, pp. 737–750 [Abstract] - Jiří Klinot, Jaroslav Podlaha, Jana Podlahová, Karel Malý and Václav Petříček
Conformation of ring A in 3-oxotriterpenoids. sofa conformation in 3-oxolupane-28-nitrile crystal
1989, Vol. 54, Issue 3, pp. 725–736 [Abstract] - Jiří Klinot, Jiří Liška, Alena Forgáčová, Miloš Buděšínský, Jiří Protiva, Stanislav Hilgard and Alois Vystrčil
Acid-catalyzed rearrangements of an A(1)-nor-triterpenoid 2α,3α-epoxide
1989, Vol. 54, Issue 2, pp. 413–429 [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] - Aleš Svatoš, Irena Valterová, Anna Fábryová and Jan Vrkoč
Determination of the absolute configuration of secondary alcohols by modified Horeau's method using HPLC
1989, Vol. 54, Issue 1, pp. 151–159 [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] - Eva Klinotová, Helena Pavlíková, Martina Pressová, Hana Chodounská, Jiří Klinot, Jiří Protiva and Alois Vystrčil
E-seco-Acids of pentacyclic triterpenoids. Oxidative cleavage of ring E in 3β-acetoxy-21-oxo-18α,19βH-ursan-28→20β-olide
1987, Vol. 52, Issue 11, pp. 2744–2752 [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] - Silvio Cerrini, Doriano Lamba, Irena Valterová, Miloš Buděšínský, Jan Vrkoč and František Tureček
Methyl 3α,6α-diacetoxy-10-oxo-(7α)-kemp-11-en-20-oate: The revised structure for the kempane derivative from the frontal gland secretion of Nasutitermes costalis soldiers
1987, Vol. 52, Issue 3, pp. 707–713 [Abstract] - Jiří Protiva, Rudolf Očadlík, Eva Klinotová, Jiří Klinot and Alois Vystrčil
Ethylene dithioketals in ring a of 19β,28-epoxy-18α-oleanane; Mass spectra and reduction with deuterated Raney-nickel
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
Oxidation of 3β,28-lupanediol diacetate and lupane with peroxyacetic acid
1987, Vol. 52, Issue 2, pp. 487–492 [Abstract] - Irena Valterová, Soňa Vašíčková, Miloš Buděšínský and Jan Vrkoč
Constituents of frontal gland secretion of peruvian termites Nasutitermes ephratae
1986, Vol. 51, Issue 12, pp. 2884–2895 [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] - Ludvík Streinz, Irena Valterová, Zdeněk Wimmer, Miloš Buděšínský, David Šaman, Jitka Kohoutová, Miroslav Romaňuk and Jan Vrkoč
Direct esterification of α-methoxy-α-(trifluoromethyl)phenylacetic acid
1986, Vol. 51, Issue 10, pp. 2207–2213 [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] - 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] - Irena Valterová, Miloš Buděšínský, František Tureček and Jan Vrkoč
Minor diterpene components of the defense secretion from the frontal gland of soldiers of the species Nasutitermes costalis (HOLMGREN)
1984, Vol. 49, Issue 9, pp. 2024–2039 [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] - 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] - 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] - 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] - 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]
