关键词: 羧基, 酯基, N-甲基异噁唑四氯化铁酸盐, 合成, 体外抗癌活性

Fouteen 2-methyl-3-ethylcarboxy-5-aryl-3a,6a-dihydro-4,6-dioxopyrrolino[3',4'-d]-isoxazoliniumtetrachloro-ferrate derivatives 2a~2g and 2-methyl-3-carboxyl-5-aryl-3a,6a-dihydro-4,6-dioxopyrrolino[3',4'-d]-isoxazolinium-tetra-chloroferrate derivatives 4a~4g were synthesized by using dimethylsulfate as a N-methylating reagent and ferric(III)-chloride as anion exchange reagent in hydrochloric acid. The structures of the target compounds 2 and 4 were characterized by ¹H NMR, IR spectra and elemental analysis. The preliminary in vitro anticancer activity on the compounds showed that most compounds possess anti-cancer activity at some extent. At the test concentration of 20 μg/mL, compounds 2a~2g and 4a~4g showed inhibition activities in the range of 97.32%~99.94% and 97.45%~99.92% against cell division cycle 25B phosphatase (Cdc25B), respectively. At the test concentration of 20 μg/mL, compounds 2a~2g and 4d~4g showed inhibition activities in the range of 52.18%~97.15% and 86.66%~99.45% against SH2-containing protein tyrosine phosphatase-1 (SHP1), respectively. Compounds 4a~4c only have the inhibition activities in the range of 15.21%~47.11%, which is lower than IC₅₀ against SHP1. Preliminary discussion was carried out on the structure-activity relationship of the target compounds.

Key words: carboxyl, estergroup, N-methylisoxazolinium-tetrachloroferrate, synthesis, in vitro anticancer activity