Crystal and Molecular Structure of ChelidonineReportar como inadecuado

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Croatica Chemica Acta, Vol.63 No.4 March 1991. -

The crystal and molecular structure of benzophenantridine alkaloid chelidonine, C20H19N05 CM = 353.37 was solved by direct methods and refined by the least-squares technique to a conventional R index of 0.117 for 1888 unique reflections. The crystals are monoclinic, space group P21. Both, B and C rings have half chair conformation and are in cis junction. The N-methyl and C14-hydroxyl groups are in equatorial and axial positions, respectively. The OH-group forms intramolecular

hydrogen bond with N atom. Conformation of the molecule is quite different from that found in chelidonine-p-brombenzoate\CBB.

Autor: Bela Ribar - ; Academy of Sciences and Arts of Vojvodina, Ul. Svetozara Markovića 6, 21000 Novi Sad, Yugoslavia Agneš Kapor - ;



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