Description: |
8-Hydroxy-9,10-diisobutyryloxythymol shows cytotoxicity on six cancer cell lines (K562, HT-29, SGC-7901, DU145, MDA-MB-231, U251). 8-Hydroxy-9,10-diisobutyryloxythymol may have antibacterial activity. |
In vitro: |
Acta Botanica Yunnanica, 2009, 31(2):190-192. | New Cytotoxic Thymol Derivatives from Inula helianthus-aquatica (Compositae).[Reference: WebLink] | METHODS AND RESULTS:
A new thymol derivative, 8-hydroxy-9,10-dioxyisopropylidenethymol (1), together with three known thymol derivatives 10-hydroxy-8, 9-dioxyisopropylidenethymol (2), 8-Hydroxy-9,10-diisobutyryloxythymol (3) and 8, 10-dihydroxy-9-isobutyryloxy-thymol (4), was isolated from 95% EtOH extract of the flowers of Inula helianthus-aquatica. Their structures were elucidated on the basis of detailed spectroscopic analysis. CONCLUSIONS:
These compounds showed cytotoxicities on six cancer cell lines (K562, HT-29, SGC-7901, DU145, MDA-MB-231, U251), and compound 2 is the strongest one with IC50s of 4.20-33.12 μmol/L. This is the first time that the cytotoxic thymol derivatives were isolated from this titled plant. |
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