Antiproliferative Activity of the Diterpenes Jatrophone and Jatropholone and Their Derivatives

 

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Abstract

The antiproliferative activity of the diterpenes jatropholone A and B, 16 semi-synthetic derivatives thereof, and that of jatrophone and its three derivatives was assessed on human cell cultures. The cells used comprised normal lung fibroblasts (MRC-5), gastric adenocarcinoma (AGS), leukemia (HL-60), lung cancer (SK‐MES‐1), and bladder carcinoma (J82). Jatropholone A (1) was inactive against all the tumor cell lines; however, its acetylation rendered a compound with antiproliferative activity. The epimeric jatropholone B (8) was active against all the cancer cell lines, and its derivatives presented different effects on the selected cell lines. While jatrophone (19) showed strong anticancer activity, its derivatives 9β,13α-dihydroxyisabellione and 13α-hydroxy-9β-acetoxyisabellione were less active.

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Dr. Guillermo Schmeda-Hirschmann

Laboratorio de Química de Productos Naturales
Instituto de Química de Recursos Naturales
Universidad de Talca

Casilla 747

Talca

Chile

Phone: + 56 71 20 02 88

Fax: + 56 71 20 04 48

Email: schmeda@utalca.cl