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'Indole Alkaloids' in keywords Facet   Publication Year 1982  [X]
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1Author    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 
2Author    Atta-Ur-Rahman, Maryam Ghazala, H.E JRequires cookie*
 Title    The Synthesis of 11-Methoxynauclefine and 11-Methoxyrutaecarpine  
 Abstract    The synthesis of 11 -methoxynauclefine and 11 -methoxyrutaecarpine is described starting from harmaline. Harmaline (1) and harmine (20) are major indole alkaloids in the seeds of Pegcinum harmala [1-3]. The demonstration of a highly mobile equilibrium between the imine and enamine tautomers of harma-line by deuteration studies [4] had led us previously to report the synthesis of a number of novel indolo-quinolizidines [5, 6], reserpine and sempervirine analogues [7, 8] and gambirtannine derivatives [9] utilizing the enamine chemistry of harmaline and its derivatives. 
  Reference    Z. Naturforsch. 37b, 762—771 (1982); received November 11 1981 
  Published    1982 
  Keywords    Nauclefine, Rutaecarpine, Indole Alkaloids, a>i<i-Tumour Agents 
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 TEI-XML for    default:Reihe_B/37/ZNB-1982-37b-0762.pdf 
 Identifier    ZNB-1982-37b-0762 
 Volume    37 
3Author    Joachim Stöckigt, Karl-Heinz Pawelka, A. Na, R. Other, Brigitte DeusRequires cookie*
 Title    Indole Alkaloids from Cell Suspension Cultures of Stemmadenia tomentosa and Voacanga africana  
 Abstract    Cell suspension cultures o f Stemmadenia tomentosa synthesized under normal growth condition the eight major indole alkaloids: (-)-tabersonine, (—)-minovincinine, (+)-conoflorine (voaphyl-line), condylocarpine, (+)-tubotaiwine (dihydrocondylocarpine), (-)-norfluorocurarine (vin-canine), (-)-vinervine, and (—)-coronaridine. These alkaloids consist o f the three different types, Aspidosperma, Strychnos and Iboga. In contrast, cultures o f Voacanga africana produced mainly one alkaloid group (Aspidosperma-type) represented by (—)-tabersonine, lochnericine and (—)-minovincinine. Therefore this cell culture seems to be qualified for investigation concerning the biosynthesis o f Aspidosperma alkaloids. 
  Reference    Z. Naturforsch. 37c, 857—8 (1982); received June 3 1982 
  Published    1982 
  Keywords    Stemmadenia tomentosa var palmeri, Voacanga africana, Apocynaceae, Cell Suspension Cultures, Indole Alkaloids 
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 TEI-XML for    default:Reihe_C/37/ZNC-1982-37c-0857.pdf 
 Identifier    ZNC-1982-37c-0857 
 Volume    37