Semra KURUCU, Gülaçtı TOPCU, Muhammad Iqbal CHOUDARY, Murat KARTAL

Pyrrolizidine alkaloids from Symphytum sylvaticum Boiss. subsp. sepulcrale. (Boiss. & Bal.) Greuter & Burdet var. sepulcrale and Symphytum aintabicum Hub.-Mor. & Wickens

Pyrrolizidine alkaloid (Echimidine-N-oxide) was isolated from Symphytum sylvaticum Boiss.subsp. sepulcrale (Boiss. & Bal.) Greuter & Burdet var. sepulcrale and pyrrolizidine alkaloid (Echimidine) was isolated from Symphytum aintabicum Hub. - Mor. & Wickens. The structures of the isolated compounds were elucidated based on IR, EIMS, $^1H$, and $^{13}C$ NMR analysis and also on 2D NMR (COSY, HMBC,HMQC) experiments.

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