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- W2048394772 abstract "Drei Alkaloide, C23H26N2O5 (A), C21H24N2O3 (B) und C24H26N2O7 (C), wurden aus Kopsia officinalis Tsiang isoliert. Durch Einkristall-Röntgendiffraktometrie ergab sich die Struktur von Alkaloid C als 6,7-Methylendioxychanofruticosin-methylester. Die ähnlichen Alkaloide A und B wurden als Chanofruticosin-methylester und dessen Des-N-methoxycarbonyl-Derivat identifiziert, hauptsächlich aufgrund ihrer 13C-NMR-Spektren durch Vergleich mit den zugeordneten Kohlenstoff-Verschiebungen des Alkaloids C. Three Indoline Alkaloids from Kopsia officinalis Tsiang Three alkaloids, C23H26N2O5 (A), C21H24N2O3 (B), and C24H26N2O7 (C) were isolated from Kopsia officinalis Tsiang. The structure of alkaloid C was determined by single crystal X-ray diffractometry to be methyl 6,7-methylenedioxychanofruticosinate. The related alkaloids A and B were identified as methyl chanofruticosinate and its de-N-methoxycarbonyl derivative, mainly on the basis of their 13C NMR spectra in comparison with the assigned carbon shifts of alkaloid C." @default.
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- W2048394772 date "1981-10-20" @default.
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- W2048394772 title "Drei Indolin-Alkaloide ausKopsia officinalis Tsiang" @default.
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- W2048394772 doi "https://doi.org/10.1002/jlac.198119811016" @default.
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