Collect. Czech. Chem. Commun. 1978, 43, 3210-3226

On the validity of the "cis/trans" lactone rule for allylic coupling constants of the α-exomethylene protons in natural sesquiterpenic α-exomethylene γ-lactones

Zdeněk Samek

Individual author index pages

Other CCCC articles of these authors

  • Miroslav Holub, Zdeněk Samek, Miloš Buděšínský, David Šaman, Ełżbieta Błoszyk and Bohdan Drożdż
    8α-Hydroxybalchanin - A new sesquiterpenic lactone from Leucanthemella serotina (L.) TZVEL.
    1982, Vol. 47, Issue 11, pp. 2927–2931 [Abstract]
  • Patricia Sierra, Ladislav Novotný, Zdeněk Samek, Miloš Buděšínský, Ladislav Dolejš and Karel Bláha
    Alkaloids of Rauvolfia salicifolia GRISEB species
    1982, Vol. 47, Issue 11, pp. 2912–2921 [Abstract]
  • Juraj Harmatha and Zdeněk Samek
    Diethylamine addition to natural sesquiterpenic α-exomethylene-γ-lactones and its use for chemical transformations of these compounds
    1982, Vol. 47, Issue 10, pp. 2779–2785 [Abstract]
  • Miroslav Holub, Miloš Buděšínský, Zdeněk Samek, Bohdan Drożdż, Halina Grabarczyk, Ayhan Ulubelen, Sevil Öksüz and Urszula Rychłewska
    Absolute configuration of xerantholide, a sesquiterpenic lactone from Anthemis austriaca JACQ.
    1982, Vol. 47, Issue 2, pp. 670–675 [Abstract]
  • Josef Jizba, Věra Laudová, Zdeněk Samek, Karel Ubik and Ladislav Novotný
    Components of Senecio nemorensis var. subdecurens
    1981, Vol. 46, Issue 4, pp. 1048–1053 [Abstract]
  • Zdeněk Samek, Tomáš Vaněk and Miroslav Holub
    Unusual cyclization in the 11-hydroxy-1βH,5βH,6βH,7αH-guaian-6,12-olide series
    1981, Vol. 46, Issue 4, pp. 941–946 [Abstract]
  • Miloš Buděšínský, Zdeněk Samek and Miloš Tichý
    In situ reactions of amines and amino alcohols and their application to structural assignment by 1H NMR spectroscopy
    1980, Vol. 45, Issue 10, pp. 2784–2803 [Abstract]
  • Wojciech T. Markiewicz, Nelly Sh. Padyukova, Zdeněk Samek and Jiří Smrt
    The reaction of 1,3-dichloro-1,1,3,3-tetraisopropyldisiloxane with cytosine arabinoside and 1-(6-deoxy-α-L-talofuranosyl)uracil
    1980, Vol. 45, Issue 6, pp. 1860–1865 [Abstract]
  • Zdeněk Samek, Miroslav Holub, Vlastimil Herout, Ełżbieta Błoszyk and Bohdan Drożdż
    Isoerivanin and dehydroisoerivanin - Minor sesquiterpene lactone components from Balsamita major DESF.
    1979, Vol. 44, Issue 5, pp. 1468–1474 [Abstract]
  • Zdeněk Samek and Miloš Buděšínský
    In situ reactions with trichloroacetyl isocyanate and their application to structural assignment of hydroxy compounds by 1H NMR spectroscopy. A general comment
    1979, Vol. 44, Issue 2, pp. 558–588 [Abstract]
  • Zdeněk Samek and Juraj Harmatha
    Use of structural changes for stereochemical assignments of natural α-exomethylene γ-lactones of the germacra-1(10),4-dienolide type on the basis of allylic and vicinal couplings of bridgehead protons. Hydrogenation of endocyclic double bonds
    1978, Vol. 43, Issue 10, pp. 2779–2799 [Abstract]
  • Miroslav Holub, Otakar Motl and Zdeněk Samek
    The structure and relative and absolute configurations of the sesquiterperpenic lactones gradolide and polhovolide from Laserpitium siler L.
    1978, Vol. 43, Issue 9, pp. 2471–2477 [Abstract]
  • Miroslav Holub, Zdeněk Samek, Soňa Vašíčková and Milena Masojídková
    11-Hydroxy-1βH,5βH,6αH,7αH-guaian-6,12-olides: Relative and absolute configuration of the sesquiterpenic lactones montanolide, isomontanolide, acetylisomontanolide and related substances
    1978, Vol. 43, Issue 9, pp. 2444–2470 [Abstract]
  • Miroslav Svoboda, Miroslava Synáčková, Zdeněk Samek, Pavel Fiedler and Zdeněk Arnold
    N,N-Dimethyl-N-alkylammoniodiformylmethylides: New group of stabilised aliphatic ylides
    1978, Vol. 43, Issue 5, pp. 1261–1275 [Abstract]
  • Josef Jizba, Zdeněk Samek, Ladislav Novotný, Elinka Najdenová and Anna Boeva
    Components of Senecio nemorensis var. bulgaricus (VEL. PRO. SP.)
    1978, Vol. 43, Issue 4, pp. 1113–1124 [Abstract]