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Chemistry and Industry of Forest Products ›› 2020, Vol. 40 ›› Issue (5): 57-62.doi: 10.3969/j.issn.0253-2417.2020.05.008

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Synthesis and Antitumor Activity of Isopimaric Thiophene Sulfonamides Derivatives

Yanju LU1,2(),Zhendong ZHAO1,2,Liangwu BI1,2,Yuxiang CHEN1,2,*(),Jing WANG1,2,Yan GU1,2   

  1. 1. Institute of Chemical Industry of Forest Products, CAF; National Engineering Lab. for Biomass Chemical Utilization; Key Lab. of Chemical Engineering of Forest Products, National Forestry and Grassland Administration; Key Lab. of Biomass Energy and Material, Jiangsu Province; Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing 210042, China
    2. Research Institute of Forestry New Technology, CAF, Beijing 100091, China
  • Received:2020-05-25 Online:2020-10-28 Published:2020-10-31
  • Contact: Yuxiang CHEN E-mail:luyanju-1982@163.com;cyxlhs@126.com。

Abstract:

Isopimaric chloride(compound 2) was synthesized by using isopimaric acid as raw material. Then four new isopimaric thiophene sulfonamides derivatives:isopimaric acid acyl-4-bromo-2, 5-dichlorothiophene-3-sulfonamide(5a), isopimaric acid acyl-5-bromothiophene-2-sulfonamide(5b), isopimaric acid acyl-5-chloro-4-nitro-sulfonamide (5c), and isopimaric acid acyl-thiophene-2-sulfonamide(5d) were prepared by aminolysis reaction from compound 2 and thiophere sulfonamides which were connected with p-phenylenediamine. The structures of the compound were confirmed by FT-IR, 1H NMR, 13C NMR, and ESI-MS. In addition, the cell proliferation inhibition assay (MTT method) was used to study the in vitro inhibitory activity of 5a-5d on four human tumor cells. The results showed that compound 5b had inhibition rates of 91.36%, 94.06% and 92.26% against Hela, MDA-MB-231 and Hep G-2 at the concentration of 100 μmol/L, besides, the inhibition rate against PC-3 was 86.93%, which was close to 90%, indicating that compound 5b had good antitumor activity. Through the determination of IC50 value, it was further concluded that the inhibition effect of compound 5b was better than that of 5-fluorouracil (5-FU), a widely used anticancer agent in clinic.

Key words: isopimaric acid, thiophene, sulfonamides, synthesis, characterization, biological activity

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