Conclusions
From the roots ofXanthogalum purpurascens growing in the Transcaucasus, we have isolated a new coumarin, C24H26O7 with mp 111–113°C, [α] 20D −164.2° (c 0.97; ethanol) which we have called xanthalin. On the basis of the NMR spectrum it has been established that xanthalin is 3′, 4′-diangeloyl-2′, 2′-dimethyl-3′, 4′-dihydropyrano-5′, 6′:6, 7-coumarin.
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References
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Khimiya Prirodnykh Soedinenii, Vol. 4, No. 5, pp. 280–283, 1968
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Sokolova, N.I., Nikonov, G.K., Perel'son, M.E. et al. The structure of xanthalin. Chem Nat Compd 4, 237–239 (1968). https://doi.org/10.1007/BF00568527
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DOI: https://doi.org/10.1007/BF00568527