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  • Title: 7alpha,20-epoxy-ent-kauranoids from Isodon parvifolius.
    Author: Li LM, Li GY, Huang SX, Li SH, Zhou Y, Xiao WL, Lou LG, Ding LS, Sun HD.
    Journal: J Nat Prod; 2006 Apr; 69(4):645-9. PubMed ID: 16643043.
    Abstract:
    Nine new 7alpha,20-epoxy-ent-kaurane diterpenoids, parvifolines C-K (1-9), together with 12 known analogues, rabdoternin G (10), adenolin E (11), lasiodonin (12), lushanrubescensin F (13), parvifoliside (14), effusanin A (15), effusanin B (16), effusanin E (17), taibaihenryiin A (18), shikokianin (19), maoyecrystal J (20), and the acetonide of lasiodonin (21), were isolated from the leaves of Isodon parvifolius. The structures of compounds 1-9 were determined on the basis of spectroscopic methods including extensive 1D and 2D NMR analysis. The new diterpenoids (1-9) and lasiodonin (12) were evaluated for their inhibitory activity against A549, HT-29, and K562 cell lines.
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