Synthesis and evaluation of cytotoxic effects of novel α-methylenelactone tetracyclic diterpenoids

Bioorg Med Chem Lett. 2012 Mar 1;22(5):1922-5. doi: 10.1016/j.bmcl.2012.01.051. Epub 2012 Jan 26.

Abstract

A series of tetracyclic diterpenoids bearing the α-methylenelactone group have been synthesized and screened for their in vitro anti-tumor activities against six human cancer cell lines. The results showed that compounds 1c, 2a and 2b exhibited significant cytotoxicity superior to the positive control doxorubicin hydrochloride against MDA-MB-231, K562 and HepG2 cell lines. In particular, compound 2b was identified as the most promising anticancer agent against HepG2 cells with IC(50) value of 0.09μM.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Antineoplastic Agents / chemical synthesis
  • Antineoplastic Agents / chemistry*
  • Antineoplastic Agents / pharmacology*
  • Cell Line, Tumor
  • Cell Survival / drug effects
  • Diterpenes / chemical synthesis
  • Diterpenes / chemistry*
  • Diterpenes / pharmacology*
  • Humans
  • Lactones / chemical synthesis
  • Lactones / chemistry*
  • Lactones / pharmacology*
  • Neoplasms / drug therapy
  • Structure-Activity Relationship

Substances

  • Antineoplastic Agents
  • Diterpenes
  • Lactones
  • methylene-lactone