Collect. Czech. Chem. Commun.
1983, 48, 2994-3019
https://doi.org/10.1135/cccc19832994
Electrophilic additions to 10β-vinyl cholestane derivatives
Pavel Kočovskýa, Ivo Starýa, František Turečekb and Vladimír Hanušb
a Institute of Organic Chemistry and Biochemistry, Czechoslovak Academy of Sciences, 166 10 Prague 6
b The J. Heyrovský Institute of Physical Chemistry and Electrochemistry, Czechoslovak Academy of Sciences, 121 38 Prague 2
Individual author index pages
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Are There Two Different Geometric Isomers of the O=C=N=C=O Cation?
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Coupling Reactions of ortho-Substituted Halobenzenes with Alkynes. The Synthesis of Phenylacetylenes and Symmetrical or Unsymmetrical 1,2-Diphenylacetylenes
1999, Vol. 64, Issue 4, pp. 649–672 [Abstract] - Günter Schmid, Ulf Thewalt, Petr Sedmera, Vladimír Hanuš and Karel Mach
Dimeric Structures of Cp'TiCl2 Compounds with Bulky Substituents at the Cyclopentadienyl Rings
1998, Vol. 63, Issue 5, pp. 636–645 [Abstract] - Štěpán Vyskočil, Martin Smrčina and Pavel Kočovský
A Facile Synthesis of the Enantiopure, Nitrogen-Substituted 2,2'-Diamino-1,1'-binaphthyls as Potential Ligands for Catalytic Asymmetric Reactions
1998, Vol. 63, Issue 4, pp. 515–519 [Abstract] - Jörg Hiller, Ulf Thewalt, Jaroslav Podlaha, Vladimír Hanuš and Karel Mach
Synthesis and Crystal Structures of Dimeric Titanium(II) Bis(trimethylsilyl)acetylene Complexes [(C5H5-nMen)Ti(η2-Me3SiC≡CSiMe3)(μ-Cl)]2(n = 3-5)
1997, Vol. 62, Issue 10, pp. 1551–1561 [Abstract] - Martin Smrčina, Štěpán Vyskočil, Jana Polívková, Jana Poláková and Pavel Kočovský
Synthesis and Resolution of Racemic 2-Amino-2'-hydroxy-1,1'-binaphthyl
1996, Vol. 61, Issue 10, pp. 1520–1524 [Abstract] - Miloš Tichý, Jana Holanová, Ivo Starý, Irena G. Stará and Jiří Závada
Axially Chiral Selectors of C2 Symmetry Bound to Silica: Synthesis and HPLC-Evaluation
1995, Vol. 60, Issue 4, pp. 645–658 [Abstract] - Pavel Kočovský
Organic Reactivity Control by Means of Neighboring Groups and Organometallics. A Personal Account
1994, Vol. 59, Issue 1, pp. 1–74 [Abstract] - Miloš Buděšínský, Alexander Kasal, Želimír Procházka, Huynh Kim Thoa, Soňa Vašíčková and Pavel Kočovský
Revision of the structure of 3-methoxy-14α-hydroxy-D-homo-1,3,5-(10)-estratrien-17a-one. A simple 1H NMR method for the determination of configuration of hydroxy group in position 5 and/or 14 of the D-homo-steroid skeleton
1991, Vol. 56, Issue 7, pp. 1512–1524 [Abstract] - Jiří Slavík, Vladimír Hanuš and Leonora Slavíková
Alkaloids from Stylophorum lasiocarpum (OLIV.) FEDDE
1991, Vol. 56, Issue 5, pp. 1116–1122 [Abstract] - Karel Mach, Helena Antropiusová, Vladimír Hanuš and Petr Sedmera
Titanium-catalyzed Diels-Alder addition of bis(trimethylsilyl)acetylene to 1,3-cyclohexadiene
1989, Vol. 54, Issue 11, pp. 3088–3091 [Abstract] - Pavel Kočovský and Dalimil Dvořák
Transition-metal catalysis in Michael addition of β-dicarbonyls: Tuning of the reaction conditions
1988, Vol. 53, Issue 11, pp. 2667–2674 [Abstract] - František Tureček, Libor Brabec, Tomáš Vondrák, Vladimír Hanuš, Josef Hájíček and Zdeněk Havlas
Sulfenic acids in the gas phase. Preparation, ionization energies and heats of formation of methane-, ethene-, and benzenesulfenic acid
1988, Vol. 53, Issue 9, pp. 2140–2158 [Abstract] - Václav Černý, Miloš Buděšínský, Miloš Ryba and František Tureček
A contribution to peroxy acid oxidation of α,β-unsaturated ketones and linearly conjugated dienones: Reactions in the cholestane series
1988, Vol. 53, Issue 7, pp. 1549–1567 [Abstract] - Jiří Joska, Jan Fajkoš and František Tureček
Solvolytic rearrangements in 4β,5-cyclopropano-5β-cholestane-3β,19-diol 3-acetate 19-p-toluenesulphonate
1987, Vol. 52, Issue 12, pp. 2991–3012 [Abstract] - František Tureček
Stereochemistry of organic ions in the gas phase: A review
1987, Vol. 52, Issue 8, pp. 1928–1984 [Abstract] - František Věžník, Eva Táborská, Hana Bochořáková, František Tureček, Vladimír Hanuš and Jiří Slavík
Alkaloids of Papaver nudicaule SUBSP. xanthopetalum (TRAUTV.) FEDDE and P. nudicaule SUBSP. album (REGEL) FEDDE from the section Scapiflora REICHB.
1987, Vol. 52, Issue 6, pp. 1634–1640 [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] - Karel Mach, Jana Nováková, Vladimír Hanuš and Zdeněk Dolejšek
Mass spectrometric and electron spin resonance study of allylic peroxyl radicals in the gas-phase reaction between allylic radicals and dioxygen
1986, Vol. 51, Issue 12, pp. 2675–2684 [Abstract] - Ivan Černý, Vladimír Pouzar, Pavel Drašar, František Tureček and Miroslav Havel
Steroids with the β-crotonate (2-butenoate) side chain
1986, Vol. 51, Issue 1, pp. 128–140 [Abstract] - Pavel Drašar, Vladimír Pouzar, Ivan Černý, Miroslav Havel, František Tureček, Daniela Schmiedová and Karel Vereš
Preparation of 3-carboxypropanoates of digitoxin and digoxin and their conjugates with L-tyrosine
1985, Vol. 50, Issue 12, pp. 2760–2774 [Abstract] - Ivo Starý and Pavel Kočovský
Synthesis of some allylic acetoxy derivatives in the steroid series
1985, Vol. 50, Issue 5, pp. 1227–1238 [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] - Hynek Balcar, Alena Dosedlová, Vladimír Hanuš, Lidmila Petrusová and Bohumír Matyska
Metathesis of methyl 10-undecenoate
1984, Vol. 49, Issue 8, pp. 1736–1745 [Abstract] - Karel Palát, Tomáš Vontor, Milan Čeladník and Vladimír Hanuš
Preparation of a partially hydrogenated dibenzo[c,h][1,2,6,7]tetrazecine and its pyridine analogue
1984, Vol. 49, Issue 6, pp. 1409–1411 [Abstract] - Pavel Kočovský
Participation by some oxygen containing groups in hypobromous acid addition to double bond
1983, Vol. 48, Issue 12, pp. 3660–3673 [Abstract] - Pavel Kočovský
Competition of two participating groups in hypobromous acid addition to some 4-cholestene derivatives
1983, Vol. 48, Issue 12, pp. 3643–3659 [Abstract] - Pavel Kočovský
Acetoxyl group as control element in electrophilic addition: Participation by acetoxy group and its competition with other participating groups in hypobromous acid addition to some 5-cholestene derivatives
1983, Vol. 48, Issue 12, pp. 3629–3642 [Abstract] - Pavel Kočovský
Neighboring group participation in electrophilic additions: The role of Markovnikov and Fürst-Plattner rule in hypobromous acid addition to 5,6-unsaturated cholestane derivatives
1983, Vol. 48, Issue 12, pp. 3618–3628 [Abstract] - Pavel Kočovský
Competition of 5(O)n and 6(O)n participation by 19a-substituent in hypobromous acid addition to 2,3- and 5,6-unsaturated 19-homocholestane derivatives
1983, Vol. 48, Issue 12, pp. 3606–3617 [Abstract] - Pavel Kočovský
Synthesis of some unsaturated 19a-homocholestane derivatives
1983, Vol. 48, Issue 12, pp. 3597–3605 [Abstract] - Pavel Kočovský
Synthesis of some 2,3- and 5,6-unsaturated 19-homosteroids bearing an oxygen containing group at the position 19a
1983, Vol. 48, Issue 12, pp. 3589–3596 [Abstract] - Karel Mach, Lidmila Petrusová, Helena Antropiusová, Vladimír Hanuš, František Tureček and Petr Sedmera
Intermolecular hydrogen transfer in unsaturated hydrocarbons induced by dimeric titanocene
1983, Vol. 48, Issue 10, pp. 2924–2936 [Abstract] - Václav Černý and Pavel Kočovský
Neighboring group participation in hypobromous acid addition to 19-substituted 5α-cholest-1-enes and in acid cleavage of their epoxy analogs
1982, Vol. 47, Issue 11, pp. 3062–3076 [Abstract] - František Tureček
Preparation of 7-oxabicyclo[4.3.0]nonanes and 2-oxabicyclo[4.4.0]decanes specifically labelled with deuterium
1982, Vol. 47, Issue 3, pp. 858–876 [Abstract] - Pavel Kočovský, František Tureček and Václav Černý
Mechanism of acid cleavage of some steroid epoxides. Competition between neighboring group participation and external nucleophile attack
1982, Vol. 47, Issue 1, pp. 124–129 [Abstract] - Pavel Kočovský, František Tureček and Václav Černý
Mechanism of hypobromous acid addition to unsaturated steroids. Competition between neighboring group participation and external nucleophile attack
1982, Vol. 47, Issue 1, pp. 117–123 [Abstract] - Pavel Kočovský, Pavel Drašar, Vladimír Pouzar and Miroslav Havel
Synthesis of some westphalen-type cardenolide analogs
1982, Vol. 47, Issue 1, pp. 108–116 [Abstract] - Vladimír Pouzar, Pavel Drašar, Pavel Kočovský and Miroslav Havel
Synthesis of some isocardenolide analogs and 17β-maleimidoandrostane of westphalen structural type
1982, Vol. 47, Issue 1, pp. 96–107 [Abstract] - Pavel Drašar, František Tureček and Miroslav Havel
17β-[4-(1,3-Thiazolyl)]-androst-5-ene derivatives
1981, Vol. 46, Issue 11, pp. 2906–2911 [Abstract] - Pavel Kočovský
Synthesis of 19-nor-10β-vinyl-5α-cholestane and its 5β-epimer
1981, Vol. 46, Issue 11, pp. 2898–2905 [Abstract] - Pavel Kočovský and František Tureček
An unusual rearrangement in hypobromous acid addition to 10β-vinyl cholestane derivatives
1981, Vol. 46, Issue 11, pp. 2892–2897 [Abstract] - Pavel Kočovský and František Tureček
Neighboring group participation and rearrangement in hypobromous acid addition to 10β-vinyl cholestane derivatives
1981, Vol. 46, Issue 11, pp. 2877–2891 [Abstract] - František Tureček, Tomáš Trnka and Miloslav Černý
Fragmentation of isomeric dideoxy derivatives of 1,6-anhydro-β-D-hexopyranoses under electron impact
1981, Vol. 46, Issue 10, pp. 2390–2403 [Abstract] - František Tureček, Vladimír Hanuš, Petr Sedmera, Helena Antropiusová and Karel Mach
Cycloheptatriene dimers: New precursors of diamantane
1981, Vol. 46, Issue 6, pp. 1474–1485 [Abstract] - Jan Kopecký, Jaroslav Šmejkal and Vladimír Hanuš
Synthesis of bridgehead bicyclo[2.2.2]octanols
1981, Vol. 46, Issue 6, pp. 1370–1375 [Abstract] - Pavel Kočovský and Václav Černý
A modified route to intermediates in partial syntheses of digitoxigenin and xysmalogenin
1981, Vol. 46, Issue 2, pp. 446–451 [Abstract] - Pavel Kočovský and Václav Černý
Participation of 19-substituents in acid cleavage of steroidal 3α,4α- and 4α,5α-epoxides
1980, Vol. 45, Issue 11, pp. 3199–3209 [Abstract] - Pavel Kočovský and Václav Černý
Participation of 19-substituents in acid cleavage of steroidal 5α,6α-epoxides
1980, Vol. 45, Issue 11, pp. 3190–3198 [Abstract] - Pavel Kočovský and Václav Černý
Participation of 19-substituents in hypobromous acid addition to 3,4- and 4,5-unsaturated steroids
1980, Vol. 45, Issue 11, pp. 3030–3038 [Abstract] - Pavel Kočovský and Václav Černý
Participation of 19-substituents in electrophilic additions. influence of 3β-substitution on hypobromous acid addition to 5,6-unsaturated steroids
1980, Vol. 45, Issue 11, pp. 3023–3029 [Abstract] - Pavel Kočovský
Synthesis of 3,4-, 4,5- and 5,6-unsaturated 19-substituted cholestane derivatives and related epoxides
1980, Vol. 45, Issue 11, pp. 3008–3022 [Abstract] - Pavel Kočovský
Synthesis of 14-deoxy-14α-strophanthidin
1980, Vol. 45, Issue 11, pp. 2998–3007 [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] - Vladimír Hanuš, Milan Hrazdira and Otto Exner
Pyrazolidine derivatives from the condensation reaction of hydrazobenzene with aliphatic aldehydes
1980, Vol. 45, Issue 9, pp. 2417–2424 [Abstract] - František Tureček
Preparation of cycloheptanols symmetrically labelled with deuterium
1980, Vol. 45, Issue 6, pp. 1820–1825 [Abstract] - Pavel Kočovský and Václav Černý
Synthesis of 14-deoxy-14α-strophanthidol
1980, Vol. 45, Issue 3, pp. 921–926 [Abstract] - Jan Fajkoš, Jiří Joska and František Tureček
Solvolysis of 5,6β-cyclopropano-5β-cholestane-3β,19-diol 3-acetate 19-p-toluenesulphonate
1980, Vol. 45, Issue 2, pp. 584–598 [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] - František Tureček and Pavel Kočovský
The synthesis and mass spectra of some oxygen-bridged 5α-cholestane and B-homo-5α-cholestane derivatives
1980, Vol. 45, Issue 1, pp. 274–293 [Abstract] - František Tureček, Vladimír Hanuš and Miloš Tichý
The role of conformational mobility in the stereospecific loss of water under electron impact
1979, Vol. 44, Issue 12, pp. 3595–3603 [Abstract] - František Tureček, Olga Turečková and Jaroslav Julák
The syntheses of methyl esters of pentadeconic acids with double branched chain
1979, Vol. 44, Issue 10, pp. 3111–3118 [Abstract] - Pavel Kočovský and Václav Černý
Synthesis of 6β,19-dimethoxy-3α,5-cyclo-5α-pregnan-20-one
1979, Vol. 44, Issue 7, pp. 2275–2283 [Abstract] - Pavel Kočovský
Model experiments in the synthetic approach to strophanthidin: The synthesis of 3β,5-dihydroxy-5β-cholestan-19-al
1979, Vol. 44, Issue 7, pp. 2156–2160 [Abstract] - Pavel Kočovský and Václav Černý
Participation of 19-ester groups in the cleavage of 2α,3α- and 5α,6α-steroid epoxides. A case of competition between participation and external nucleophile attack
1979, Vol. 44, Issue 5, pp. 1496–1509 [Abstract] - Pavel Kočovský, Václav Černý and Miroslava Synáčková
Participation of 19-ester groups in hypobromous acid additions to 2,3- and 5,6-unsaturated steroids
1979, Vol. 44, Issue 5, pp. 1483–1495 [Abstract] - František Tureček and Pavel Kočovský
Mass spectra of some 5-methyl-19-nor-5β-cholest-9-enes
1979, Vol. 44, Issue 2, pp. 429–438 [Abstract] - Pavel Kočovský and Václav Černý
Reduction of some mesyloxy and tosyloxy steroids with sodium iodide and zinc dust
1979, Vol. 44, Issue 1, pp. 246–250 [Abstract] - Pavel Kočovský, Václav Černý and František Tureček
Westphalen rearrangement. Mechanism of formation of 5α-acetoxy derivatives
1979, Vol. 44, Issue 1, pp. 234–245 [Abstract] - Pavel Kočovský and Václav Černý
Participation of the methoxyl group in the cleavage of some 19-substituted steroid epoxides. A case of competition between internal and external nucleophile attack
1979, Vol. 44, Issue 1, pp. 226–233 [Abstract] - Huynh Kim Thoa, Želimír Procházka, Miloš Buděšínský and Pavel Kočovský
Hydroxylation of 6β-methoxy-3α,5-cyclo-5α-androstan-17-one with Rhizopus nigricans
1978, Vol. 43, Issue 9, pp. 2305–2311 [Abstract] - Pavel Kočovský and Václav Černý
Preparation of some 6β-substituted 5-hydroxy-5α-cholest-2-enes
1978, Vol. 43, Issue 7, pp. 1933–1941 [Abstract] - Pavel Kočovský and Václav Černý
Participation of the methoxyl group in electrophilic additions to some unsaturated 19-methoxy steroids
1978, Vol. 43, Issue 7, pp. 1924–1932 [Abstract] - Pavel Kočovský and Václav Černý
Neighboring group participation in some electrophilic additions to 19-substituted 5α-cholest-2-enes and 5-cholestenes
1978, Vol. 43, Issue 1, pp. 327–335 [Abstract] - Pavel 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] - Pavel Kočovský and V. Černý
Structural requirements in Westphalen rearrangement
1977, Vol. 42, Issue 8, pp. 2415–2437 [Abstract] - Pavel Kočovský and Ž. Procházka
The synthesis of pregnane derivatives with an aromatic B-ring
1977, Vol. 42, Issue 2, pp. 553–559 [Abstract] - Pavel 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] - Pavel 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] - Pavel Kočovský and V. Černý
Preparation of some 5-hydroxy-5α-cholest-2-enes
1977, Vol. 42, Issue 1, pp. 155–162 [Abstract] - Pavel Kočovský and V. Černý
Preparation of some 5-methyl-19-nor-5β-cholestane derivatives
1976, Vol. 41, Issue 9, pp. 2620–2629 [Abstract] - Pavel Kočovský, L. Kohout and J. Fajkoš
5,7-Cyclo-B-homopregnane derivatives with an oxygen function in position 17α
1975, Vol. 40, Issue 2, pp. 468–474 [Abstract] - Pavel Kočovský and Ž. Procházka
The synthesis of androstane derivatives with an aromatic B-ring
1974, Vol. 39, Issue 7, pp. 1905–1913 [Abstract] - Pavel Kočovský, K. K. Košoev and Ž. Procházka
On Steroids. CLXI. The synthesis of some new steroid glucosides
1973, Vol. 38, Issue 11, pp. 3273–3278 [Abstract]
