A new seco-kaurane type diterpenoid, ent-3,4-seco-17-oxo-kaur-4(19),15(16)-dien-3-oic acid, and a known compound, ent-3,4-seco-kaur-4(19),16(17)-dien-3-oic acid, were isolated from the stem bark of Croton oblongifolius. The structures of these compounds were established on the basis of spectroscopic data.
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Acknowledgment
We thank the National Research University Project of CHE, the Ratchadaphiseksomphot Endowment Fund (FW1022B), and the Higher Education Commission Grants for Graduate Dissertation, Chulalongkorn University, for financial support. The Department of Chemistry, Faculty of Science, and the Rachadapiseksompoj Endowment, Chulalongkorn University, are also gratefully acknowledged.
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Published in Khimiya Prirodnykh Soedinenii, No. 4, July–August, 2012, pp. 525–527.
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Suwancharoen, S., Chonvanich, O., Roengsumran, S. et al. seco-Kaurane skeleton diterpenoids from Croton oblongifolius . Chem Nat Compd 48, 583–586 (2012). https://doi.org/10.1007/s10600-012-0317-y
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DOI: https://doi.org/10.1007/s10600-012-0317-y