关键词: α,β不饱和δ内酯, 合成, 肿瘤, 抑制活性

In order to investigate whether the modification at the double bonds in the pyrone skeleton would affect their biological activity. Based on the 5,6-dihydro-6-alkyl-2-pyrone goniothalamin, a series of new compounds 5, 6 and 8 were designed and synthesized, which were obtained by modification at the unsubstituted double bonds. Their cell proliferation inhibition activities against human liver cancer (7721), human lung cancer (A549), human esophageal cancer (EC-109), human gastric cancer (MGC-803) cell lines were assessed by thiazolyl blue tetrazolium bromide (MTT) method. Most of synthetic compounds lost their bioactivities via a comparision with positive control but 6-(benzyloxy)methyl-3-methyl-4-(2,3,4,5-tetra- fluorobenzamine)-5,6-dihydro-2H-pyran-2-one (6d). The results indicate that the unsaturated double bond is a key functional group for the bioactivity of these compounds and it is possible to keep their anti-cancer proliferation activity and reduce their toxicity by modification of the unsaturated double bond in 5,6-dihydro-6-alkyl-2-pyrones.

Key words: α,β-unsaturated δ-lactone, synthesis, cancer, antiproliferative activity