Indole Alkaloids from Catharanthus roseus Tissue Cultures IV1: 16R-19,20-E-Isositsirikin, 16R-19,20-Z-Isositsirikin and 21-Hydroxycyclolochnerin.
From CATHARANTHUS ROSEUS cell suspension cultures 16 R-19,20- E-isositsirikine ( 1), 16 R-19,20- Z-isositsirikine ( 2) and a new sarpagine type indole alkaloid ( 5) have been isolated. The structures have been deduced from spectroscopic data; that of 5 has been confirmed by X-ray analysis.
Kohl
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GBF, Gesellschaft für Biotechnologische Forschung mbH, Abt. Naturstoffchemie, Mascheroder Weg 1, D-3300 Braunschweig.
Witte
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Sheldrick
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Höfle
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