Collect. Czech. Chem. Commun.
1991, 56, 2892-2905
https://doi.org/10.1135/cccc19912892
The synthesis of 5-methyl-19-nor-5β-pregna-9,16-diene-3,20-dione, 5-methyl-19-nor-5β-pregna-9,10-diene-3,6,20-trione and their analogues with annellated E ring
Jiří Polman and Alexander Kasal
Institute of Organic Chemistry and Biochemistry, Czechoslovak Academy of Sciences, 166 10 Prague 6
Individual author index pages
Other CCCC articles of these authors
- Miloš Buděšínský, Jan Fajkoš, Jaroslav Günter and Alexander Kasal*
Synthesis, Reactions, Conformation Analysis, and NMR Spectra of 5,10-Epoxy-5ξ,10ξ-estrane-3,17-diones
2005, Vol. 70, Issue 4, pp. 507–518 [Abstract] - Libor Matyáš, Alexander Kasal*, Zoila Babot Riera and Cristina E. Sunol
Effects of 3α-Amino-5α-pregnan-20-one on GABAA Receptor: Synthesis, Activity and Cytotoxicity
2004, Vol. 69, Issue 7, pp. 1506–1516 [Abstract] - Barbora Slavíková*, Alexander Kasal, Hana Chodounská and Zdena Krištofíková
3α-Fluoro Analogues of "Allopregnanolone" and Their Binding to GABAA Receptors
2002, Vol. 67, Issue 1, pp. 30–46 [Abstract] - Hana Chodounská, Miloš Buděšínský, Romana Šídová, Miroslav Šíša, Alexander Kasal and Ladislav Kohout*
Simple NMR Determination of 5α/5β Configuration of 3-Oxosteroids
2001, Vol. 66, Issue 10, pp. 1529–1544 [Abstract] - Hana Chodounská* and Alexander Kasal
Allopregnanolone Derivatives: Synthesis of 3α-Hydroxy-7a-homo-5α-pregnan-20-one
2000, Vol. 65, Issue 7, pp. 1156–1162 [Abstract] - Alexander Kasal*, Miloš Buděšínský, Jan Pelnař, Michael A. Bruck* and Michael F. Brown
Structures and Synthesis of 4a-Homo-7,19-dinorsteroids, X-Ray Crystallography and NMR Spectroscopy
1999, Vol. 64, Issue 12, pp. 2019–2034 [Abstract] - Barbora Slavíková* and Alexander Kasal
Epalons: Synthesis of New 16α-Carboxymethyl Derivatives
1999, Vol. 64, Issue 9, pp. 1479–1484 [Abstract] - Alexander Kasal
Epalons: Synthesis of 7-Norallopregnanolone
1999, Vol. 64, Issue 9, pp. 1471–1478 [Abstract] - Barbora Slavíková, Alexander Kasal* and Miloš Buděšínský
Autoxidation vs Hydrolysis in 16α-Acyloxy Steroids
1999, Vol. 64, Issue 7, pp. 1125–1134 [Abstract] - Alexander Kasal, Jiří Polman and Miloš Buděšínský
Hydrogenation of a Tetrasubstituted Double Bond: Synthesis of 5-Methyl-19-nor-5β-pregnanes
1998, Vol. 63, Issue 10, pp. 1549–1563 [Abstract] - Hana Chodounská and Alexander Kasal
Epalons: Synthesis of 3α,7α-Dihydroxy-5α-pregnan-20-one
1998, Vol. 63, Issue 10, pp. 1543–1548 [Abstract] - Romana Šídová, Karel Stránský, Alexander Kasal, Barbora Slavíková and Ladislav Kohout
Long-Range Effect of 17-Substituents in 3-Oxo Steroids on 4,5-Double Bond Hydrogenation
1998, Vol. 63, Issue 10, pp. 1528–1542 [Abstract] - Barbora Slavíková, Alexander Kasal and Ladislav Kohout
N-Benzoyl-N-methylandrostan-17β-amines; 20-Aza Analogues of Brassinolide
1998, Vol. 63, Issue 5, pp. 655–661 [Abstract] - Alexander Kasal, Barbora Slavíková, Ladislav Kohout and Miloš Buděšínský
The Synthesis of A-Homo-B-norandrostanes: The Effect of a Hydroxyl on the Course of Hydrogenation of the ∆9-Double Bond
1997, Vol. 62, Issue 10, pp. 1631–1641 [Abstract] - Barbora Slavíková, Alexander Kasal and Miloš Buděšínský
Dihydrotestosterone with an Ammonium Centre in the Position 16β
1997, Vol. 62, Issue 4, pp. 656–664 [Abstract] - Alexander Kasal, Hana Chodounská and Wojciech J. Szczepek
trans-Hydrindanes by Reduction: Synthesis of Dihydro-B-nortestosterone
1996, Vol. 61, Issue 9, pp. 1386–1395 [Abstract] - Hana Chodounská, Alexander Kasal, David Šaman and Karel Ubik
One-Pot Deuteration and Reduction of Ketones in the Synthesis of [16,16,17-2H3]-Epitestosterone
1996, Vol. 61, Issue 7, pp. 1037–1046 [Abstract] - Ladislav Kohout, Alexander Kasal and Miroslav Strnad
Pregnane-Type Brassinosteroids with a Four-Carbon Ester Functionality in Position 20
1996, Vol. 61, Issue 6, pp. 930–940 [Abstract] - Oldřich Lapčík, Richard Hampl, Martin Hill, Luboslav Stárka, Alexander Kasal, Vladimír Pouzar and Zdeněk Putz
Radioimmunological and Chromatographic Properties of Tyrosine Methyl Ester Conjugates with Stereoisomeric Steroid Carboxy Derivatives
1996, Vol. 61, Issue 5, pp. 799–807 [Abstract] - Alexander Kasal and Miloš Buděšínský
Partial Modifications of Hydroxy Groups in 5-Methyl-5β-estr-9-ene Derivatives
1996, Vol. 61, Issue 2, pp. 276–287 [Abstract] - Alexander Kasal, Ladislav Kohout and Michal Lebl
Synthesis of a Scaffold for the Creation of Non-Peptide Libraries
1995, Vol. 60, Issue 12, pp. 2147–2155 [Abstract] - Ladislav Kohout and Alexander Kasal
7a-Keto-B-homotestosterone and 7a-Keto-B-homoepitestosterone
1994, Vol. 59, Issue 3, pp. 649–657 [Abstract] - Hana Chodounská, Barbora Slavíková and Alexander Kasal
Synthesis of Some Epitestosterone Analogues
1994, Vol. 59, Issue 2, pp. 435–443 [Abstract] - Alexander Kasal
Synthesis of 17α-Hydroxy Steroids: B-Norepitestosterone
1993, Vol. 58, Issue 9, pp. 2202–2210 [Abstract] - Alexander Kasal and Světlana Pásztorová
Synthesis of RIA Haptens: 3α,11α-Dihydroxy-5α-pregnan-20-one 11-Hemisuccinate
1993, Vol. 58, Issue 3, pp. 619–628 [Abstract] - Alexander Kasal, Květa Fuksová and Vladimír Pouzar
Preparation of Unlabelled and [3H]-Labelled Epitestosterone and Its Metabolites
1993, Vol. 58, Issue 3, pp. 600–611 [Abstract] - Alexander Kasal, Richard Hampl, Zdeněk Putz, Ladislav Kohout and Luboslav Stárka
Preparation and Properties of Three Immunogens with a Spacer on the β-Side of the Steroid Skeleton and the Effect of Immunogen Structure on Specificity of the Obtained Antisera
1992, Vol. 57, Issue 10, pp. 2166–2173 [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] - Alexander Kasal, Jenny Pokorná and Jaroslav Zajíček
3β,11α,17-Trihydroxy-5-pregnen-20-one 11-hemisuccinate as a haptene for RIA of "17α-hydroxypregnenolone"
1991, Vol. 56, Issue 6, pp. 1340–1347 [Abstract] - Alexander Kasal, Jaroslav Podlaha and Jaroslav Zajíček
A-homo-B,19-dinorandrostanes from 6β-methanesulfonyloxy-5-methyl-19-nor-5β-androst-9-ene derivatives
1991, Vol. 56, Issue 5, pp. 1070–1086 [Abstract] - Jiří Polman and Alexander Kasal
Synthesis of 5-methyl-19-nor-5β-pregn-9-ene derivatives
1990, Vol. 55, Issue 7, pp. 1783–1791 [Abstract] - Alexander Kasal
Antiandrogenic A-homo-B,19-dinorandrostanes from 5β-methyl-19-norandrost-9-enes with different substituents in positions 3 and 17
1989, Vol. 54, Issue 8, pp. 2218–2228 [Abstract] - Alexander Kasal and Jaroslav Zajíček
Spontaneous transannular reaction in Δ9-unsaturated A-homo-B,19-dinorsteroids
1989, Vol. 54, Issue 5, pp. 1327–1335 [Abstract] - Alexander Kasal
Antiandrogenic A-homo-B,19-dinor-analogues of androgens from 6β-chloro-5-methyl-19-nor-5β-androst-9-enes
1989, Vol. 54, Issue 5, pp. 1318–1326 [Abstract] - Alexander Kasal and Jaroslav Zajíček
Solvolysis of Westphalen-type compounds
1986, Vol. 51, Issue 7, pp. 1462–1475 [Abstract] - Ladislav Kohout, Vijay Kumar Sethi, Jaroslav Zajíček and Alexander Kasal
Solvolytic reactions of empiric 3-methanesulfonyloxy-7-benzoyloxy-5β,6β-cyclopropanocholestanes
1986, Vol. 51, Issue 2, pp. 436–446 [Abstract] - Alexander Kasal, Ladislav Kohout and Jiří Filip
4,5-Secoandrostanes by Eschenmoser's reaction
1985, Vol. 50, Issue 6, pp. 1402–1414 [Abstract] - Luboslav Stárka, Alexander Kasal, Marie Bičíková and Richard Hampl
Preparation and synandrogenic activity of 17β-hydroxy-4,5-seco-5-androsten-3-one
1984, Vol. 49, Issue 12, pp. 2942–2947 [Abstract] - Alexander Kasal and Jorga Smolíková
Photochemical 6β-hydroxylation of 11β-hydroxy-4-androstene-3,17-dione
1984, Vol. 49, Issue 12, pp. 2932–2941 [Abstract] - Alexander Kasal
A new type of A-homo-B-norcholestane derivatives
1984, Vol. 49, Issue 4, pp. 892–902 [Abstract] - Ladislav Kohout and Alexander Kasal
Electrophilic addition to the 5,6-double bond in A-nor-3,5-secosteroids
1983, Vol. 48, Issue 7, pp. 2051–2063 [Abstract] - Alexander Kasal, Luboš Stárka, Richard Hampl and Ladislav Kohout
Preparation and pharmacological properties of 4,5-secopregnane-3,20-dione and its derivatives
1983, Vol. 48, Issue 7, pp. 2040–2050 [Abstract] - Alexander Kasal
4-Thia-5-cholesten-3-one and some further steroidal δ-thioenol lactones
1983, Vol. 48, Issue 5, pp. 1489–1498 [Abstract] - Ladislav Kohout, Alexander Kasal, Vlastimil Šanda and Helena Velgová
Rearrangement of the 16,17-cyclopropano derivatives
1983, Vol. 48, Issue 1, pp. 173–183 [Abstract] - Alexander Kasal
Desulfuration of steroidal thians
1982, Vol. 47, Issue 11, pp. 3148–3159 [Abstract] - Antonín Trka and Alexander Kasal
Inductive effect in EI-mass spectra of some 5,6-dihalogenides and 5,6-halohydrins of 5α-cholestan-3β-ol and 3β-acetoxy-5α-cholestane
1982, Vol. 47, Issue 11, pp. 2946–2960 [Abstract] - Alexander Kasal and Ladislav Kohout
4,5-Secoanalogues of dihydrotestosterone with a cyclopropane ring in the position 5(6)
1982, Vol. 47, Issue 1, pp. 130–143 [Abstract] - Alexander Kasal
Hydrogenation of 12-oxo-5β-chol-9(11)-enates on platinum
1981, Vol. 46, Issue 8, pp. 1839–1849 [Abstract] - Alexander Kasal and Antonín Trka
Splitting off of water from the molecular ions of steroidal cyclopropyl ketones
1980, Vol. 45, Issue 11, pp. 2985–2997 [Abstract] - Alexander Kasal
Analogues of androgens with the open ring A
1980, Vol. 45, Issue 9, pp. 2541–2549 [Abstract] - Antonín Trka and Alexander Kasal
Electron impact mass spectra of some vicinal trans-dihalo- and trans-hydroxyhalocholestanes
1980, Vol. 45, Issue 6, pp. 1720–1733 [Abstract] - Alexander Kasal
Deoxygenation at the carbon C(5) of 3,6-cyclo-A-nor-3,5-secoandrostanes
1979, Vol. 44, Issue 5, pp. 1619–1629 [Abstract] - Alexander Kasal
Synthesis of 3,6-cyclo-A-nor-3,5-secoandrostanes
1978, Vol. 43, Issue 7, pp. 1778–1792 [Abstract] - Alexander Kasal
Reduction of some 3,6-cyclo-A-nor-3,5-seco-6β-cholestanes
1978, Vol. 43, Issue 2, pp. 498–510 [Abstract]