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'Catharanthus roseus' in keywords Facet   section ZfN Section B  [X]
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1984 (1)
1982 (1)
1981 (1)
1Author    Werner Kohl, Barbara Witte, Gerhard HöfleRequires cookie*
 Title    Alkaloide aus Catharanthus roseus-Zellkulturen, II [1] Alkaloids from Catharanthus roseus Tissue Cultures, II [1]  
 Abstract    From the extract of Catharanthus roseus tissue cultures 16 different indole alkaloids have been isolated belonging to heteroyohimbane, aspidosperma and iboga types. The structures were deduced by UV, NMR and mass spectrometry. Ajmalicine (1) and catharanthine (16) were found to be the major constituents, tetra-hydroalstonine (2), akuammigine (3), 3-isoajmalicine (4), pleiocarpamine (6), akuammiline (6), tabersonine (7), 20-hydroxytabersonine (8), lochnericine (9), horhammericine (10), minovincinine (11), vindolinine (12), 20-epivindolinine (18), vindolinine -Nt -oxide (14) and 20-epivindolinine-Nb-oxide (16) could be determined as minor or trace alkaloids. 
  Reference    Z. Naturforsch. 36b, 1153—1162 (1981); eingegangen am 20. Mai 1981 
  Published    1981 
  Keywords    Indole Alkaloids, Catharanthus roseus, Cell Cultures 
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 TEI-XML for    default:Reihe_B/36/ZNB-1981-36b-1153.pdf 
 Identifier    ZNB-1981-36b-1153 
 Volume    36 
2Author    Werner Kohl, Barbara Witte, Gerhard HöfleRequires cookie*
 Title    Alkaloide aus Catharanthus roseus-Zellkulturen, III [1] Alkaloids from Catharanthus roseus Tissue Cultures, III [1]  
 Abstract    From the methanol extract of Catharanthus roseus tissue cultures sitsirikine (2), isositsirikine (3), dihydrositsirikine (4), yohimbine (5), 3-iso-19-epiajmalicine (6), pleio-carpamine (7), antirhin (8) and two up to now unknown alkaloids have been isolated in addition to the compounds previously found in the hexane extract. The structures belonging to lieteroyohimbane, vallesiachotamine, corynanthe and related types were deduced by UV, NMR and mass spectroscopy. 
  Reference    Z. Naturforsch. 37b, 1346—1351 (1982); eingegangen am 17. Mai 1982 
  Published    1982 
  Keywords    Indole Alkaloids, Catharanthus roseus, Cell Cultures 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-1346.pdf 
 Identifier    ZNB-1982-37b-1346 
 Volume    37 
3Author    A. Tta-, Ur-Rahm An, M. Bashir, S. Kaleem, T. Fatima, H.E JRequires cookie*
 Title    Catharanthus roseus+  
 Abstract    A new alkaloid has been isolated from the leaves o f Catharanthus roseus. Spectroscopic and degradative studies have established its structure to be 16-epi-19-S-vindolinine. In trod u ction While much work have been done on Catharan­ thus roseus (Apocynaceae) resulting in the isolation of about 100 alkaloids, there is persistent interest in the plant and new alkaloids continue to be reported. In continuation of our isolation and synthetic studies on the alkaloids of Catharanthus roseus [1 — 15], we have isolated a new alkaloid from the leaves of this plant by a combination of selective extraction, pre­ cipitation and crystallization and carried out spec­ troscopic and degradative studies on it to determ ine its structure. R esu lts and D iscu ssion 
  Reference    Z. Naturforsch. 39b, 695—7 (1984); received N ovem ber 21 1983 
  Published    1984 
  Keywords    Indoline A lkaloids, Catharanthus roseus, 13C NM R Spectra, V indolinine, Lead Tetraacetate 
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 TEI-XML for    default:Reihe_B/39/ZNB-1984-39b-0695.pdf 
 Identifier    ZNB-1984-39b-0695 
 Volume    39