Abstract:
Ten novel podophyllotoxin derivatives (IIIa-IIIi and IV
) were synthesized by three-step reactions using podophyllotoxin and
N-benzyloxycarbonyl glycine-L-proline as raw material. The structures of the target compounds were confirmed by
1H NMR,
13C NMR and MS. MTT method was used to test anti-tumor activity of the target compounds on HepG2, THP-1, HeLa and MCF-7 cells. The results showed that all the target compounds had inhibitory activity against HepG2, THP-1, HeLa and MCF-7 cells, and the inhibitory activity of IIIa on HepG2 cells was the most prominent with an IC
50 value of 0.58 nmol/L. The binding mode of compound IIIa and FAPα was studied by molecular docking. Compound IIIa could bind to multiple sites of FAPα enzyme.