Collect. Czech. Chem. Commun.
1968, 33, 1385-1392
https://doi.org/10.1135/cccc19681385
Internal rotation energy barrier of terminal N-dimethyl groups as a function of the length of polymethinium chains
Z. Samek
Individual author index pages
Other CCCC articles of these authors
- Z. Samek, M. Holub, B. Drożdż, H. Grabarczyk and B. Hładoń
Xerantholide - A new cytotoxically active sesquiterpenic lactone from Xeranthemum cylindraceum SIBTH. et SMITH
1977, Vol. 42, Issue 8, pp. 2441–2447 [Abstract] - J. Jizba, Z. Samek and L. Novotný
A sesquiterpenic alkaloid, eremophilene lactam, from the rhizomes of Petasites hybridus
1977, Vol. 42, Issue 8, pp. 2438–2440 [Abstract] - Z. Samek, M. Holub, B. Drożdż and H. Grabarczyk
Arctolide - A new sesquiterpenic lactone from Arctotis grandis THUNB.
1977, Vol. 42, Issue 7, pp. 2217–2223 [Abstract] - Z. Samek, J. Hapala, O. Fiedler and Z. Arnold
Structure of amidomalonaldehydes and some related compounds
1977, Vol. 42, Issue 5, pp. 1659–1685 [Abstract] - Z. Samek, M. Holub, H. Grabarczyk, B. Drożdż and V. Herout
The structure of hydroxyisonobilin - A cytostatically active sesquiterpenic lactone from the leaves of Anthemis nobilis L.
1977, Vol. 42, Issue 3, pp. 1065–1068 [Abstract] - M. Holub and Z. Samek
Isolation and structure of 3-epinobilin, 1,10-epoxynobilin and 3-dehydronobilin - Other sesquiterpenic lactones from the flowers of Anthemis nobilis L. Revision of the structure of nobilin and eucannabinolide
1977, Vol. 42, Issue 3, pp. 1053–1064 [Abstract] - J. Farkaš, K. Šebesta, K. Horská, Z. Samek, L. Dolejš and F. Šorm
Structure of thuringiensin, the thermostable exotoxin from Bacillus thuringiensis
1977, Vol. 42, Issue 3, pp. 909–929 [Abstract] - J. Harmatha, Z. Samek, M. Synáčková, L. Novotný, V. Herout and F. Šorm
Neutral components of the extract from Homogine alpina (L.) CASS.
1976, Vol. 41, Issue 7, pp. 2047–2058 [Abstract] - Z. Samek, M. Holub, E. Bloszyk, B. Drożdż and V. Herout
Relative and absolute configuration of the sequiterpenic lactone erivanin
1975, Vol. 40, Issue 9, pp. 2676–2679 [Abstract] - V. Benešová, Z. Samek and S. Vašíčková
Structure of the sequiterpenic lactone diplophyllolide and other components from the liverwort Diplophyllum albicans (L.) DUM.
1975, Vol. 40, Issue 6, pp. 1966–1970 [Abstract] - K. Čapek, J. Jarý and Z. Samek
Contraction of the pyranoside ring in methyl 3-acetamido-3,6-dideoxy-2-O-methanesulfonyl-α-L-gluco- and -α-L-galactopyranoside
1975, Vol. 40, Issue 1, pp. 149–163 [Abstract] - K. Vokáč and Z. Samek
Standard sesquiterpenic lactones for structural correlations; Stereoisomeric (6R,7S,10S,11S)-10-hydroxyguaian-6,12-olides and related (6R,7S)-guaienolides
1974, Vol. 39, Issue 2, pp. 480–500 [Abstract] - Z. Samek, M. Holub, H. Grabarczyk, B. Drożdż and V. Herout
On terpenes. CCXXIX. Structure of sesquiterpenic lactones from Tanacetum vulgare L.
1973, Vol. 38, Issue 7, pp. 1971–1976 [Abstract] - M. Holub, Z. Samek, D. P. Popa and V. Herout
On terpenes. CCXXVIII. The structure of the sesquiterpenic lactone silerolide
1973, Vol. 38, Issue 6, pp. 1804–1808 [Abstract] - M. Holub, Z. Samek, R. DeGroote, V. Herout and F. Šorm
On terpenes. CCXXVII. The structure of the sesquiterpenic triester lactone trilobolide
1973, Vol. 38, Issue 5, pp. 1551–1562 [Abstract] - M. Holub and Z. Samek
On terpenes. CCXXVI. The structure of lasolide - A sesquiterpenic lactone from Laser trilobum (L.) BORKH.
1973, Vol. 38, Issue 5, pp. 1428–1433 [Abstract] - L. Novotný, M. Krojidlo, Z. Samek, J. Kohoutová and F. Šorm
On terpenes. CCXXIII. The structure of nemosenins A, B, C, D, and senemorin, new furoeremophilane derivatives from Senecio nemorensis, subsp. fuchsii
1973, Vol. 38, Issue 3, pp. 739–755 [Abstract] - M. Holub and Z. Samek
On terpenes. CCXXII. The structure of archangelolide, a sesquiterpenic lactone from Laserpitium archangelica WULF.
1973, Vol. 38, Issue 3, pp. 731–738 [Abstract] - B. Drożdż, Z. Samek, M. Holub and V. Herout
On terpenes. CCXXI. The structure of alatolide, a sesquiterpenic lactone from Jurinea alata CASS.
1973, Vol. 38, Issue 3, pp. 727–730 [Abstract] - P. Sedmera, A. Vítek and Z. Samek
Computer construction of standard steroid models
1972, Vol. 37, Issue 12, pp. 3828–3836 [Abstract] - Z. Samek, M. Holub, K. Vokáč, B. Drożdż, G. Jommi, P. Gariboldi and A. Corbella
On terpenes. CCXIX. The structure of grosheimin
1972, Vol. 37, Issue 8, pp. 2611–2629 [Abstract] - B. Drożdż, H. Grabarczyk, Z. Samek, M. Holub, V. Herout and F. Šorm
On terpenes. CCXVI. Sesquiterpenic lactones from Eupatorium cannabinum L. Revision of the structure of eupatoriopicrin
1972, Vol. 37, Issue 5, pp. 1546–1554 [Abstract] - K. Vokáč, Z. Samek, V. Herout and F. Šorm
On terpenes. CCXV. Absolute configuration of artabsin
1972, Vol. 37, Issue 4, pp. 1346–1355 [Abstract] - M. Holub, O. Motl, Z. Samek and V. Herout
On terpenes. CCXIV. The structure of two sesquiterpenic lactones, isomontanolide and acetylisomontanolide from Laserpitium siler L.
1972, Vol. 37, Issue 4, pp. 1186–1194 [Abstract] - H. Naimie, Z. Samek, L. Dolejš and Z. Řeháček
Über die flüchtigen Inhaltstoffe von Asa foetida; Zwei neuen natürlichen Schweffelverbindungen mit pestizider Wirkung
1972, Vol. 37, Issue 4, pp. 1166–1177 [Abstract] - J. Popławski, M. Holub, Z. Samek and V. Herout
On terpenes. CCIX. Arnicolides - sesquiterpenic lactones from the leaves of Arnica montana L.
1971, Vol. 36, Issue 6, pp. 2189–2199 [Abstract] - Z. Samek, M. Holub, V. J. Novikov, J. N. Forostjan and D. P. Popa
On terpenes. CCVIII. The structure of ivoxanthin, a sesquiterpenic lactone from Cyclachaena xanthifolia FRESEN.
1970, Vol. 35, Issue 12, pp. 3818–3821 [Abstract] - M. Holub, D. P. Popa, Z. Samek, V. Herout and F. Šorm
On terpenes. CCVI. Neutral components of the light petroleum extract of the root of Laserpitium siler L. The structure of the sesquiterpenic lactone montanolide
1970, Vol. 35, Issue 11, pp. 3296–3308 [Abstract] - K. Kefurt, J. Jarý and Z. Samek
Lactones. XIV. Reaction of methyl 2,3-O-isopropylidene-α-L-rhamnopyranoside with the triphenyl phosphite-methyl iodide reagent
1970, Vol. 35, Issue 9, pp. 2613–2622 [Abstract] - K. Vokáč, Z. Samek, V. Herout and F. Šorm
On terpenes. CCV. The structure of two native orange substances from Lactarius deliciosus L.
1970, Vol. 35, Issue 4, pp. 1296–1301 [Abstract] - J. Křepinský, G. Jommi, Z. Samek and F. Šorm
On terpenes. CCIV. The sesquiterpenic constituents of Aristolochia debilis SIEB. et ZUCC. The structure of debilone
1970, Vol. 35, Issue 2, pp. 745–748 [Abstract] - M. Holub, Z. Samek, D. P. Popa, V. Herout and F. Šorm
On terpenes. CCIII. The structure of laserolide, a sesquiterpenic lactone from the roots of Laser trilobum L. BORKH.
1970, Vol. 35, Issue 1, pp. 284–294 [Abstract] - Z. Samek, J. Harmatha, L. Novotný and F. Šorm
On terpenes. CCII. Absolute configuration of adenostylone, neoadenostylone and isoadenostylone from Adenostyles alliariae (GOUAN) KERN, and of decompostin from Cacalia decomposita A. GRAY
1969, Vol. 34, Issue 9, pp. 2792–2808 [Abstract] - K. Vokáč, Z. Samek, V. Herout and F. Šorm
On terpenes. CCI. The structure of artabsin and the origin and structure of the coloured hydrocarbon chamazulenogen from wormwood oil
1969, Vol. 34, Issue 8, pp. 2288–2305 [Abstract] - V. Benešová, Z. Samek, V. Herout and F. Šorm
Plant substances. XXIX. Isolation and structure of two new indole alkaloids from Riccardia sinuata (HOOK.) TREV.
1969, Vol. 34, Issue 6, pp. 1807–1809 [Abstract] - J. Harmatha, Z. Samek, L. Novotný, V. Herout and F. Šorm
On terpenes. CC. The structure of adenostylone, isoadenostylone and neoadenostylone - components of the rhizomes of Adenostyles alliariae (GOUAN) KERN.
1969, Vol. 34, Issue 6, pp. 1739–1749 [Abstract] - J. Farkaš, K. Šebesta, K. Horská, Z. Samek, L. Dolejš and F. Šorm
The structure of exotoxin of Bacillus thuringiensis var. gelechiae. Preliminary communication
1969, Vol. 34, Issue 3, pp. 1118–1120 [Abstract] - V. Benešová, Z. Samek, V. Herout and F. Šorm
On terpenes. CXCVIII. Isolation and structure of pinguisone from Aneura pinguis (L.) DUM.
1969, Vol. 34, Issue 2, pp. 582–592 [Abstract] - L. Novotný, Z. Samek, J. Harmatha and F. Šorm
On terpenes. CXCVI. 9-Hydroxyfuroeremophilane, a further dominating component from light petroleum extract of Petasites hybridus (L.) GAERTN., MEY et SCHERB. rhizomes
1969, Vol. 34, Issue 1, pp. 336–339 [Abstract] - V. Špirko and Z. Samek
On the Hamiltonian traces in high-resolution NMR analysis
1968, Vol. 33, Issue 10, pp. 3372–3374 [Abstract] - M. Suchý, Z. Samek, V. Herout and F. Šorm
On terpenes. CXCV. The structure and absolute configuration of scabiolide
1968, Vol. 33, Issue 7, pp. 2238–2244 [Abstract] - P. Sedmera, F. Hanousek and Z. Samek
Chemistry of boranes. XIII. Determination of structure of some halogenedecaboranes and oxido-bis-tridecahydrodecaborane by means of 11B NMR and IR spectra
1968, Vol. 33, Issue 7, pp. 2169–2176 [Abstract] - B. Drożdż, M. Holub, Z. Samek, V. Herout and F. Šorm
On terpenes. CXCII. The constitution and absolute configuration of onopordopicrine - A sesquiterpenic lactone from Onopordon acanthium L.
1968, Vol. 33, Issue 6, pp. 1730–1737 [Abstract] - M. Suchý, Z. Samek, V. Herout and F. Šorm
On terpenes. CXC. Constitution and configuration of albicolide, a new germacranolide from Jurinea albicaulis
1967, Vol. 32, Issue 11, pp. 3934–3940 [Abstract] - M. Suchý, Z. Samek, V. Herout, R. B. Bates, G. Snatzke and F. Šorm
On terpenes. CLXXXVIII. Constitution and configuration of pelenolides, a new group of sesquiterpene lactone germacranolides
1967, Vol. 32, Issue 11, pp. 3917–3925 [Abstract] - K. Bláha and Z. Samek
Amino acids and peptides. LXXVI. NMR-spectroscopy of cis-peptide bonds in diastereomeric piperazinediones
1967, Vol. 32, Issue 10, pp. 3780–3784 [Abstract] - M. Suchý, Z. Samek, V. Herout and F. Šorm
On terpenes. CLXXXVI. The structure of salonitenolide, a sesquiterpenic lactone of germacrane type from Centaurea salonitana VIS
1967, Vol. 32, Issue 5, pp. 2016–2021 [Abstract] - M. Holub, Z. Samek, V. Herout and F. Šorm
On terpenes. CLXXXIII. The constitution of laserpitine - a sesquiterpenic compound from Laserpitium latifolium L. root
1967, Vol. 32, Issue 2, pp. 591–609 [Abstract] - Z. Ksandr, Z. Samek, V. Špirko and M. Ferles
Studies in the pyridine series. XIII. NMR-shift ranges for some isomeric alkylsubstituted tetrahydropyridines
1966, Vol. 31, Issue 7, pp. 3003–3007 [Abstract] - L. Lábler, Z. Samek, J. Smolíková and F. Šorm
On steroids. XCVII. Isolation and structure of some secondary formed weak bases from Holarrhena antidysenterica
1966, Vol. 31, Issue 5, pp. 2034–2047 [Abstract] - L. Novotný, Z. Samek and F. Šorm
On terpenes. CLXXVI. Isolation and structure of dimethoxydihydrofuroeremophilane
1966, Vol. 31, Issue 1, pp. 371–374 [Abstract] - M. Suchý, Z. Samek, V. Herout and F. Šorm
On terpenes. CLXXV. Revision of structure of artiopicrin, cnicin and scabiolide
1965, Vol. 30, Issue 10, pp. 3473–3478 [Abstract] - Z. Samek and J. Farkaš
Nucleic acid components and their analogues. LXIV. Nuclear magnetic resonance spectra of anomeric 1-D-ribopyranosylthymines
1965, Vol. 30, Issue 7, pp. 2149–2156 [Abstract]