Crokonoids A–C, A Highly Rearranged and Dual-Bridged Spiro Diterpenoid and Two Other Diterpenoids from <i>Croton kongensis</i>
Yao‐Yue Fan, Shu-Qin Shi, Guo-Zhen Deng, Hong‐Chun Liu, Cheng‐Hui Xu, Jian Ding, Guan‐Wu Wang, Jian‐Min Yue
Abstract
Crokonoid A (1), a highly rearranged diterpenoid featuring a dual-bridged tricyclo[4.4.1.11,4]dodecane-2,11-dione ring system and its two possible ent-kaurene diterpenoid precursors (2 and 3), was isolated and structurally characterized by solid data from Croton kongensis. Compound 1 exhibited significant cytotoxicity against HL-60 and A-549 cell lines with IC50 values of 1.24 ± 0.56 and 1.92 ± 0.60 μM, respectively.
Topics & Concepts
TerpenoidChemistryStereochemistryDodecaneRing (chemistry)CrotonCytotoxicityDiterpeneOrganic chemistryIn vitroBiochemistryBioactive Natural Diterpenoids ResearchMarine Sponges and Natural ProductsPhytochemistry and Biological Activities