Collect. Czech. Chem. Commun. 1960, 25, 743-747
https://doi.org/10.1135/cccc19600743

Steroid-Derivate IV. Spaltung von 16-Acyloxypregnan-20-onen mit Natriumhydrid

S. Heřmánek and K. Syhora

Individual author index pages


Other CCCC articles of these authors

  • J. Plešek, S. Heřmánek and Z. Janoušek
    The synthesis and structure of the heteroboranes 6,8-S2B7H9 and 6,8-CSB7H11
    1977, Vol. 42, Issue 3, pp. 785–792 [Abstract]
  • J. Plešek, S. Heřmánek, K. Baše, Lee J. Todd and W. F. Wright
    Zwitterionic compounds of the 8,8'-X(C2B9H10)2Co series with monoatomic O, S, Se, Te, N bridges between carborane ligands
    1976, Vol. 41, Issue 12, pp. 3509–3515 [Abstract]
  • S. Heřmánek, V. Gregor, B. Štíbr, J. Plešek, Z. Janoušek and V. A. Antonovich
    Antipodal and vicinal shift effects in 11B, 13C, and 1H NMR spectra of substituted dicarba-closo-dodecarboranes(12)
    1976, Vol. 41, Issue 5, pp. 1492–1499 [Abstract]
  • Z. Plzák, B. Štíbr, J. Plešek and S. Heřmánek
    Synthesis of fluorophenyl and 3-fluorobenzyl derivatives of decarborane and the electron properties of 5- and 6-decaboranyl groups
    1975, Vol. 40, Issue 12, pp. 3602–3607 [Abstract]
  • S. Heřmánek, H. Plotová and J. Plešek
    On the acidity characteristics of decaborane(14) and its benzyl derivatives in organic solvent-water systems
    1975, Vol. 40, Issue 12, pp. 3593–3601 [Abstract]
  • Z. Janoušek, S. Heřmánek, J. Plešek and B. Štíbr
    Tetracarba-dinido-docosaborane (C4B18H22), A new type of carborane, its chemistry and structure
    1974, Vol. 39, Issue 9, pp. 2363–2373 [Abstract]
  • B. Štíbr, J. Plešek and S. Heřmánek
    Synthesis of 6,9-dicarba-nido-decaborane(14) from 5,6-dicarba-nido-decaborane(12)
    1974, Vol. 39, Issue 7, pp. 1805–1809 [Abstract]
  • J. Plešek and S. Heřmánek
    Oxidation of 7,8-dicarba-nido-undecaborate to 5,6-dicarba-nido-decaborane(12) and its dehydrogenation to 1,2-dicarba-closo-decaborane(10)
    1974, Vol. 39, Issue 3, pp. 821–826 [Abstract]
  • F. Hanousek, B. Štíbr, S. Heřmánek and J. Plešek
    Chemistry of boranes. XXXI. Infrared spectra of decaborane and its deuterio derivatives
    1973, Vol. 38, Issue 5, pp. 1312–1320 [Abstract]
  • B. Štíbr, J. Plešek and S. Heřmánek
    Chemistry of boranes. XXX. Some reactions of 5,6-dicarba-nido-decaborane(12)
    1973, Vol. 38, Issue 2, pp. 338–342 [Abstract]
  • S. Heřmánek, J. Plešek, B. Štíbr, Z. Janoušek and T. Hanslík
    Chemistry of boranes. XXVIII. Hydrogenation of 6,9-bis(dialkyl sulfide)decaborane to the parent decaborane
    1972, Vol. 37, Issue 12, pp. 4001–4004 [Abstract]
  • J. Plešek, T. Hanslík, F. Hanousek and S. Heřmánek
    Chemistry of boranes. XXVII. Lewis acidity of some substituted 1,2-dicarba-closo-dodecaboranes
    1972, Vol. 37, Issue 10, pp. 3403–3409 [Abstract]
  • F. Hanousek, B. Štíbr, S. Heřmánek, J. Plešek, A. Vítek and F. Haruda
    Chemistry of boranes. XXVI. Infrared spectra of monosubstituted decaboranes
    1972, Vol. 37, Issue 9, pp. 3001–3009 [Abstract]
  • B. Štíbr, J. Plešek and S. Heřmánek
    Chemistry of boranes. XXV. Reactions of bis- and mono-ligando derivatives of decaborane with hydrogen halides
    1972, Vol. 37, Issue 8, pp. 2696–2700 [Abstract]
  • R. Míčková and K. Syhora
    Steroid derivatives. LXIX. Preparation of hydroxy analogues of the substances of 16-methyleneprogesterone series
    1971, Vol. 36, Issue 7, pp. 2517–2526 [Abstract]
  • B. Štíbr, J. Plešek, F. Hanousek and S. Heřmánek
    Chemistry of boranes. XXIII. Reaction of 6,9-bis(dialkylsulfido)dodecahydrodecaboranes with mercuric salts
    1971, Vol. 36, Issue 5, pp. 1794–1799 [Abstract]
  • S. Heřmánek and H. Plotová
    Chemistry of boranes. XXII. The acidity of boranes
    1971, Vol. 36, Issue 4, pp. 1639–1643 [Abstract]
  • S. Heřmánek and J. Plešek
    Chemistry of boranes. XXI. Resolution of iso-octadecaborane to optical enantiomers
    1970, Vol. 35, Issue 8, pp. 2488–2493 [Abstract]
  • J. Moural and K. Syhora
    Steroid derivatives. LXVIII. Reaction of azoimide with steroidal 4-en-3-ones
    1970, Vol. 35, Issue 7, pp. 2018–2029 [Abstract]
  • R. Mazáč and K. Syhora
    Steroid derivatives. LXVII. Dependence of alcoholysis of 6-halo-4-pregnen-3-ones on sterical factors
    1970, Vol. 35, Issue 5, pp. 1547–1557 [Abstract]
  • V. Schwarz, P. Pihera and K. Syhora
    Steroid derivatives. LXVI. The synthesis of 17α-acetoxy-16-methylene analogues of the 19-norprogesterone series
    1970, Vol. 35, Issue 5, pp. 1536–1546 [Abstract]
  • J. Plešek, V. Gregor and S. Heřmánek
    Chemistry of boranes. XX. Optical isomerism in the o-carborane series
    1970, Vol. 35, Issue 1, pp. 346–349 [Abstract]
  • J. Plešek, S. Heřmánek and B. Štíbr
    Chemistry of boranes. XIX. A rearrangement of the borane skeleton by nucleophilic replacement of substituents
    1970, Vol. 35, Issue 1, pp. 344–346 [Abstract]
  • J. Stuchlík, S. Heřmánek, J. Plešek and B. Štíbr
    Chemistry of boranes. XVIII. A preparative separation of halogenodecaboranes. The isolation of 1-, 2-, 5-, and 6-bromotridecahydrodecaboranes
    1970, Vol. 35, Issue 1, pp. 339–343 [Abstract]
  • B. Štíbr, J. Plešek and S. Heřmánek
    Chemistry of boranes. XVII. The sequential bromination and alcoholysis of B9 and B10 addition compounds
    1969, Vol. 34, Issue 11, pp. 3241–3247 [Abstract]
  • J. Plešek, S. Heřmánek and B. Štíbr
    Chemistry of boranes. XVI. Optical isomerism in the decaborane series
    1969, Vol. 34, Issue 11, pp. 3233–3240 [Abstract]
  • A. Poláková and K. Syhora
    Steroid derivatives. LXIV. A synthesis and degradation of 6-methylsolasodine
    1969, Vol. 34, Issue 10, pp. 3118–3126 [Abstract]
  • K. Syhora, J. A. Edwards and A. D. Cross
    A new synthesis of 9β-androst-4-ene-3,17-dione
    1969, Vol. 34, Issue 8, pp. 2459–2464 [Abstract]
  • R. Míčková and K. Syhora
    Steroid derivatives. LXII. An anomalous debromination of 5,6-dibromides of estrane series
    1969, Vol. 34, Issue 2, pp. 458–467 [Abstract]
  • R. Míčková, A. Kamernickij and K. Syhora
    Steroid derivatives. LXI. A synthesis of 17β-acetoxy-16-methylene-14β,17α-progesterone
    1969, Vol. 34, Issue 2, pp. 451–457 [Abstract]
  • B. Štíbr, J. Plešek and S. Heřmánek
    Chemistry of boranes. XV. Synthesis, properties, reactions and mechanism of formation of 5(6)-halogenotridecahydrodecaboranes
    1969, Vol. 34, Issue 1, pp. 194–205 [Abstract]
  • V. Schwarz, J. Zachová and K. Syhora
    Steroid derivatives. LVIII. Synthesis of 17α-acetoxy-16-methylene-19-norpregn-4-ene-3,20-dione
    1968, Vol. 33, Issue 12, pp. 4337–4349 [Abstract]
  • J. Plešek, S. Heřmánek and B. Štíbr
    Synthesis of (+)-1,3,3-trimethyl-6-thia[2,2,2]bicyclooctane
    1968, Vol. 33, Issue 7, pp. 2336–2338 [Abstract]
  • S. Heřmánek, J. Plešek, B. Štíbr and F. Hanousek
    Chemistry of boranes. XIV. New method of preparation of compounds of the B9H13L type; Mechanism of solvolytic degradation of boranes and their derivatives
    1968, Vol. 33, Issue 7, pp. 2177–2190 [Abstract]
  • S. Heřmánek, V. Gregor and J. Plešek
    Chemistry of boranes. XII. Chromatography of o-carboranes on a silica gel layer
    1968, Vol. 33, Issue 5, pp. 1609–1611 [Abstract]
  • V. Gregor, S. Heřmánek and J. Plešek
    Chemistry of boranes. XI. Preparation of 1-ethoxy-o-carborane
    1968, Vol. 33, Issue 3, pp. 980–983 [Abstract]
  • B. Štíbr, S. Heřmánek, J. Plešek and J. Stuchlík
    Chemistry of boranes. IX. Reaction of diborane with diisopropyl ether
    1968, Vol. 33, Issue 3, pp. 976–979 [Abstract]
  • J. Plešek, S. Heřmánek and F. Hanousek
    Chemistry of boranes. X. Novel stable borane B16H20
    1968, Vol. 33, Issue 3, pp. 699–705 [Abstract]
  • J. Plešek, S. Heřmánek and B. Štíbr
    Chemistry of boranes. VIII. Synthesis and reactions of 6,6'-oxido-bis-tridecahydrodecaborane
    1968, Vol. 33, Issue 3, pp. 691–698 [Abstract]
  • J. Protiva, V. Schwarz and K. Syhora
    Steroid derivatives. LIII. Substrate specificity of Flavobacterium buccalis in microbial transformation of derivatives of 3β-hydroxypregn-5-en-20-one
    1968, Vol. 33, Issue 1, pp. 83–91 [Abstract]
  • J. Plešek, S. Heřmánek, B. Štíbr and F. Hanousek
    Chemistry of boranes. VII. A new synthesis of borane B18H22; An application of three-center bonds theory on the interpretation of reaction mechanisms
    1967, Vol. 32, Issue 3, pp. 1095–1103 [Abstract]
  • J. Plešek, B. Štíbr and S. Heřmánek
    Chemistry of boranes. VI. The reaction of bis-dialkylsulphido-dodecahydrodecaboranes with hydrohalogens. General preparation of 6- (or 5-)halogentridecahydrodecaboranes
    1966, Vol. 31, Issue 12, pp. 4744–4745 [Abstract]
  • V. Schwarz, J. Martínková, J. Protiva and K. Syhora
    Steroid-Derivate XLVI. Mikrobielle 7β,11α-Dihydroxylierung der Steroide
    1966, Vol. 31, Issue 12, pp. 4703–4709 [Abstract]
  • T. Hanslík, J. Plešek and S. Heřmánek
    Chemistry of boranes. V. Reaction between boron trichloride and sodium aluminium hydride
    1966, Vol. 31, Issue 11, pp. 4215–4220 [Abstract]
  • J. Plešek and S. Heřmánek
    Chemistry of boranes. IV. On preparation, properties, and behavior towards Lewis bases of magnesium borohydride
    1966, Vol. 31, Issue 10, pp. 3845–3858 [Abstract]
  • H. Bočková and K. Syhora
    Über Steroid-Derivate XLIII. Olefinbildende Eliminierung der Amidogruppe
    1966, Vol. 31, Issue 9, pp. 3790–3799 [Abstract]
  • J. Plešek and S. Heřmánek
    On synthesis and properties of magnesium aluminium hydride
    1966, Vol. 31, Issue 8, pp. 3060–3067 [Abstract]
  • K. Syhora and R. Mazáč
    Steroid derivatives. XLI. 16-Substituted 6-halogen-17α-hydroxyprogesterone derivatives
    1966, Vol. 31, Issue 7, pp. 2768–2783 [Abstract]
  • S. Heřmánek and J. Plešek
    Chemistry of boranes. III. Relationship between structure and chromatographic behaviour of boranes and their addition compounds with Lewis bases
    1966, Vol. 31, Issue 5, pp. 1975–1984 [Abstract]
  • S. Heřmánek, J. Plešek and V. Gregor
    Chemistry of boranes. II. Thin layer chromatography of non-ionic boron compounds
    1966, Vol. 31, Issue 3, pp. 1281–1287 [Abstract]
  • S. Heřmánek and J. Plešek
    Chemie der Borhydride I. Herstellung von Magnesiumoktahydrotriboraten
    1966, Vol. 31, Issue 1, pp. 177–189 [Abstract]
  • J. Zachová and K. Syhora
    Steroid derivatives. XXXVII. The preparation of some 3-ethers of 1-methyl-Δ1,3,5(10)-estratriene series
    1965, Vol. 30, Issue 9, pp. 3207–3211 [Abstract]
  • R. Míčková and K. Syhora
    Steroid derivatives. XXXVI. The steric course of catalytic hydrogenation of the 16-methyl-Δ14,16-pregnadien-20-one grouping
    1965, Vol. 30, Issue 8, pp. 2771–2782 [Abstract]
  • R. Míčková and K. Syhora
    Steroid derivatives. XXXIII. The formation and structure of 16-methyl-Δ14,16- pregnadiene derivatives
    1964, Vol. 29, Issue 10, pp. 2513–2521 [Abstract]
  • V. Schwarz and S. Heřmánek
    Steroid derivatives. XXXII. Additive character of the influence of 3β- and 17β-substituents on bromine addition to 3β-, 17β-disubstituted Δ5-androstenes
    1964, Vol. 29, Issue 10, pp. 2360–2368 [Abstract]
  • K. Syhora and R. Mazáč
    Steroid derivatives. XXXI. A novel synthesis of 16-methylene-17α-acyloxy-20-ketopregnane derivatives
    1964, Vol. 29, Issue 10, pp. 2351–2359 [Abstract]
  • H. Bočková, V. Schwarz and K. Syhora
    Steroid derivatives. XXVII. On some unusual reactions of 16β-bromo-Δ5-pregnene-3β,17α-diol-20-one
    1964, Vol. 29, Issue 5, pp. 1178–1186 [Abstract]
  • Z. Koblicová and K. Syhora
    Steroid derivatives. XXVI. On formation and structure of 16-methyl-Δ5,15-pregnadiene-3β,17α-diol-20-one
    1964, Vol. 29, Issue 5, pp. 1173–1177 [Abstract]
  • R. Míčková and K. Syhora
    Steroid derivatives. XXV. Partial synthesis of 16-methylenecortexolone
    1964, Vol. 29, Issue 5, pp. 1163–1172 [Abstract]
  • S. Heřmánek, V. Schwarz and Z. Čekan
    Methoden zur Trennung von Naturstoffen VII. Beziehung zwischen Substanz und Lösungsmittel bei der Chromatographie an Aluminiumoxyd
    1963, Vol. 28, Issue 8, pp. 2031–2039 [Abstract]
  • V. Schwarz and K. Syhora
    Steroid-Derivate XXIII. Über die Reaktion von Epoxyden mit wässrigen Halogenwasserstoffsäuren
    1963, Vol. 28, Issue 3, pp. 637–643 [Abstract]
  • V. Schwarz and K. Syhora
    Steroid-Derivative XXII. Chromatographie polarer Steroide an einer Aluminiumoxydschicht
    1963, Vol. 28, Issue 1, pp. 101–106 [Abstract]
  • V. Schwarz, S. Heřmánek and J. Trojánek
    Steroid-Derivate XX. Einfluss des 17β-Substituenten auf die Brom-Additionsgeschwindigkeit an 3β-Acetoxy-Δ5-androsten-Derivate
    1962, Vol. 27, Issue 12, pp. 2778–2783 [Abstract]
  • B. Pelc and S. Heřmánek
    Steroid-Derivate XV. Dehydrobromierungsversuche an 6-Brom-7-ketocholan-derivaten
    1962, Vol. 27, Issue 9, pp. 2223–2226 [Abstract]
  • S. Heřmánek, V. Schwarz and Z. Čekan
    Methods of separation of natural products. III. Measurement of activity of alumina by means of thin layer chromatography
    1961, Vol. 26, Issue 12, pp. 3170–3173 [Abstract]
  • K. Syhora
    Zur Dimerisierung der Angelicalactone
    1961, Vol. 26, Issue 8, pp. 2058–2062 [Abstract]
  • B. Pelc, S. Heřmánek and J. Holubek
    Über Steroid-Derivate XIII. Zur Dehydrobromierung von 2,4-Dibrom-3-keto-5α-androstan-derivaten in Dimethylformamid
    1961, Vol. 26, Issue 7, pp. 1852–1861 [Abstract]
  • S. Heřmánek, V. Schwarz and Z. Čekan
    Steroidderivate XII. Chromatographie neutraler Steroide an einer dünnen Aluminiumoxydschicht
    1961, Vol. 26, Issue 6, pp. 1669–1679 [Abstract]
  • V. Schwarz, S. Heřmánek and J. Trojánek
    Steroid derivatives. XI. The effect of 3β-substituents on the rate of bromine addition to derivatives of Δ5-cholestene
    1961, Vol. 26, Issue 5, pp. 1438–1442 [Abstract]
  • K. Syhora
    Steroid-Derivate IX. Partielle Synthese des 17α-Acetoxy-16-methylenprogesterons
    1961, Vol. 26, Issue 4, pp. 1034–1038 [Abstract]
  • K. Syhora
    Steroid derivatives. VIII. Synthesis of Reichstein's compound S
    1961, Vol. 26, Issue 4, pp. 1026–1033 [Abstract]
  • K. Syhora
    Dérivés des stéroides VI. Ouvertures anormales des cycles époxydiques dans les 16β-méthyl-16α,17α-époxy-20-cétopregnanes
    1961, Vol. 26, Issue 1, pp. 107–116 [Abstract]
  • J. Piťha, S. Heřmánek and J. Vít
    Über die Reduktion der Carbonsäuren und ihrer Derivate mit Natriumaluminiumhydrid
    1960, Vol. 25, Issue 3, pp. 736–742 [Abstract]
  • S. Heřmánek
    Über Pyridinhomologe IV. 3,5-Dialkylpyridine
    1959, Vol. 24, Issue 8, pp. 2748–2753 [Abstract]
  • R. Lukeš, V. Heřmánková and S. Heřmánek
    Über die Alkylierung von Methylen-bis-malonsäureäthylester
    1959, Vol. 24, Issue 5, pp. 1695–1701 [Abstract]
  • S. Heřmánek and J. Staněk
    Eine neue Synthese von Homoisovanillin
    1959, Vol. 24, Issue 4, pp. 1366–1368 [Abstract]
  • S. Heřmánek and J. Trojánek
    Synthese von trans-Δ6,7-Oktahydroisochinolin
    1957, Vol. 22, Issue 4, pp. 1157–1161 [Abstract]
  • R. Lukeš and K. Syhora
    Über die Dimerisierung des α-Angelicalactons
    1954, Vol. 19, Issue 6, pp. 1205–1214 [Abstract]
  • R. Lukeš and K. Syhora
    Triaza-adamantane
    1953, Vol. 18, Issue 5, pp. 654–662 [Abstract]