A new dicoumarol, 3,3′-methylenebis(4,6-dihydroxycoumarin) (1), along with the known metabolites, β-sitosteryl stearate (2), n-tetracosanoic acid (3), friedelin (4), friedel-1-en-3-one (5), β-sitosterol (6), 29-norcycloartanol (7), oleanolic acid (8), 3-O-acetyloleanolic acid (9), 6-methoxy-7,8-methylenedioxy coumarin (10), and methyl-3-acetyloleanolate (11), were isolated from the roots of Guazuma tomentosa. The structures of these compounds were established on the basis of spectroscopic (IR, 1H, 13C NMR, and mass) studies.
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Acknowledgment
The authors are grateful to the CDRI, Lucknow for the spectral facilities and to UGC, New Delhi, for providing a fellowship to one of us (O. P. Agarwal).
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Published in Khimiya Prirodnykh Soedinenii, No. 5, pp. 604–605, September–October, 2010.
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Agarwal, O.P., Saxena, U., Jain, S.C. et al. A new biscoumarin and other constituents from Guazuma tomentosa ROOTS. Chem Nat Compd 46, 713–715 (2010). https://doi.org/10.1007/s10600-010-9722-2
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DOI: https://doi.org/10.1007/s10600-010-9722-2