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Publisher: Altai State University
Journal: Khimiia rastitel'nogo syr'ia (Chemistry of plant raw material)
Languages: Russian
Types: Article
Subjects: Seseli; dihydroseselin; NMR-spectroscopy; chemical shift, Seseli; дигидросеселин; спектроскопия-ЯМР; химический сдвиг
From the sum of extractive substances of roots of the Seseli campestre collected in phase end of flowering – beginning of fructification by column chromatography two compounds: C19H20O6, m.p. 120,0–121,5 °C (I) and C19H20O6, colorless resin (II) has been isolated. Based on the data obtained at the study of the spectra (I: IR, n, cm-1: 3400, 1719, 1711, 1649, 1604, 1568; NMR 1Н, d, ppm: 1.50, 2СН3; 1,80, СН3–С=; 1,85, J=7,0 Hz, СН3–СН=; 5,10, J=18,38 Hz, Н-4ʹ; 6,10, 2Н; 6,25, J=9,65 Hz, Н-4; 7,95, J=9,65 Hz, Н-3; 7,50, J=8,73 Hz, Н-5; 7,80, J=8,73 Hz, Н-6; II: IR, n, cm-1: 3400, 1718, 1700, 1646, 1602, 1565, 1490; ЯМР 1Н, d, ppm: 1,35, СН3–; 1,70, СН3–; 1,85, (СН3–); 2,10 (СН3–); 4,70, J=14,71 Hz, 5,70; 6,10, J=18,38 Hz; 6,25, J=9,65 Hz, Н-4; 7,95, J=9,65 Hz, Н-3; 7,50, J=8,73 Hz, Н-6; Dept 135 и Dept 90) established that compound I have structure of 3ʹ-angeloiloxy-4ʹ-oxy-3ʹ,4ʹ-dihydroseseline and II – 3ʹ-oxy-4ʹ-senecioiloxy-3ʹ,4ʹ-dihydroseseline.
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