Conclusions
A new coumarin obtusifol, C15H16O6, with mp 149.5–150°C has been isolated fromHaplophyllum obtusifolium for the first time.
The structure of 2′- or 3′-(1-hydroxy-1-methylethyl)-8-methoxy[1,4]dioxano[g]coumarin has been proposed for obtusifol.
It has been shown that the genusHaplophyllum is close in respect of its coumarin composition to the genusPtaeroxylon.
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Literature cited
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Additional information
V. L. Komarov Botanical Institute of the Academy of Sciences of the USSR. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 303–308, May–June, 1974.
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Gashimov, N.F., Kuznetsova, G.A. A new coumarin — Obtusifol from Haplophyllum obtusifolium. Chem Nat Compd 10, 311–315 (1974). https://doi.org/10.1007/BF00563883
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DOI: https://doi.org/10.1007/BF00563883