Original article
Synthesis and evaluation of anticancer activity of some novel 6-aryl-2-(p-sulfamylphenyl)-pyridazin-3(2H)-ones

https://doi.org/10.1016/j.ejmech.2012.01.026Get rights and content

Absract

A series of novel pyridazinone derivatives bearing benzenesulfonamide moiety (2ah) has been synthesized by the condensation of appropriate aroylacrylic acid and 4-hydrazinobenzenesulfonamide hydrochloride in ethanol. Five derivatives (2a, 2b, 2d, 2g and 2h) were evaluated for their anticancer activity toward human cancer cell lines by the National Cancer Institute. The 2h showed remarkable activity against SR (leukemia) and NCI-H522 (non-small cell lung) with a GI50 value of less than 0.1 μM. It also displayed good activity against leukemia (CCRF-CEM, HL-60 (TB), K-562, MOLT-4, RPMI-8226), non-small cell lung cancer (NCI-H460), colon (HCT-116, HCT-15, HT29, KMI2, SW-620), CNS (SF-295), melanoma (MALME-3M, M14, MDA-MB-435 SK-MEL-5), ovarian (OVCAR-3, NCI/ADR-RES) and breast (MCF7) cancer cell lines with a GI50 less than 1.0 μM. The acute toxicity study of 2h indicated that it is well tolerated intra-peritoneally (400 mg/kg) by athymic nude mice. The 2h may possibly be used as lead compound for developing new anticancer agents.

Graphical abstract

Highlights

► Out of eight novel derivatives five were selected for anti-proliferative activity by NCI. ► Compound (2h) exhibited remarkable antiproliferative activity. ► 2h was referred to Biological Evaluation Committee for advance study. ► 2h is well tolerated intra-peritoneally (400 mg/kg) by athymic nude mice. ► The 2h may possibly be used as lead compound for developing new anticancer agents.

Introduction

Among all diseases that affect humanity, cancer ranks high as a major killer [1], [2]. Although major advances have been made in the chemotherapeutic management of some patients, the continued commitment to the arduous task of discovering new anticancer agents remains critically important. A large number of structurally novel sulfonamide derivatives have recently been reported to show substantial antitumor activity, both in vitro and/or in vivo. Although they have a common chemical motif of aromatic/heterocyclic sulfonamide, there are a variety of mechanisms of their antitumor action, most of them poorly understood at this moment. It is believed that carbonic anhydrase inhibition, cell cycle arrest in the G1 phase, disruption of microtubule assembly, functional suppression of the transcriptional activator NF-Y, and angiogenesis (matrix metalloproteinase, MMP) inhibition may be among such relevant mechanisms of these anticancer compounds. Some of these derivatives are currently being evaluated in clinical trials, and there is much optimism that they may lead to novel alternative anticancer drugs, devoid of the side effects of the presently available pharmacological agents [3], [4], [5].

Pyridazinone derivatives have been reported to exhibit a wide range of pharmacological activities such as antidepressant [6], antihypertensive [7], [8], antithrombotic [9], anticonvulsant [10], cardiotonic [11], antibacterial [12], diuretic [13], anti-HIV [14], aldose reductase inhibitors [15], hepatoprotective agents [16] and COX-2 inhibitors [17]. It has also been reported that pyridazinone derivative have remarkable anticancer activity [18], [19].

In continuation of an ongoing program aiming at finding new structure leads with potential chemotherapeutic activities [20], [21], [22] it was thought worthwhile to synthesize and investigate the antitumor activity of some novel pyridazinone derivatives comprising the benzenesulfonamide moiety (2ah). The data of these synthesized compounds were submitted to National Cancer Institute (NCI), USA for antiproliferative activity. As per the protocol of NCI, only five representative compounds 2a, 2b, 2d, 2g and 2h were selected and granted NSC codes Viz; NSC 749115, NSC 749114, NSC 747557, NSC 749116 and NSC 747558 respectively and screened at NCI for antiproliferative activity at a single high dose (10−5 M) in full 60 cell panel. Compound (2h) NSC 747558 exhibited the best result at a single dose and was selected for further evaluation at five dose level screening. It showed remarkable antiproliferative activity at five dose level screening and was referred to Biological Evaluation Committee of NCI for advanced study. This paper presents the synthesis of novel compounds (2ah) and in vitro anticancer efficacy against human cancer cell lines of 2a, 2b, 2d, 2g and 2h compounds.

Section snippets

Chemistry

The synthetic route used to synthesize title compounds (2ah) is outlined in Scheme 1. The β-aroylacrylic acids (1ah) required for the synthesis of pyridazinones were obtained by a Friedel Craft’s acylation through reported methods [23], [24]. The cyclization to pyridazinone derivatives bearing a benzenesulfonamide moiety was afforded by the condensation of appropriate aroylacrylic acid and 4-hydrazinobenzenesulfonamide hydrochloride in ethanol in 9.1–16.2% yield. The purity of the compounds

Conclusion

Cyclocondensation of appropriate aroylacrylic acid and 4-hydrazinobenzenesulfonamide hydrochloride yielded pyridazinone derivatives bearing a benzenesulfonamide moiety (2ah). The structures proposed to the synthesized compounds are well supported by spectroscopic data and elemental analyses. One of these derivatives (2h) had excellent in vitro anticancer activity and can be used as lead compound for developing new anticancer agents.

Chemistry

Melting points were determined by open capillary tubes and are uncorrected. All the Fourier Transform Infra Red (FTIR) spectra were recorded on a Bio-rad FTS-135 spectrophotometer using KBr pellets; νmax values are given in cm−1. 1H NMR spectra were recorded on a Bruker Spectrospin DPX 300-MHz spectrometer using deuterated DMSO as solvent and tetramethyl silane (TMS) as an internal standard. Chemical shifts are given in δ (ppm) scale and coupling constants (J values) are expressed in Hz. Mass

Acknowledgment

This work was supported by Grant No. 32-228/2006 (SR) from the University Grants Commission, New Delhi, India. One of the authors, I. G. Rathish is thankful to UGC for fellowship. We thank the Antitumor Evaluation Branch of the National Cancer Institute for performing biological evaluations.

References (31)

  • C.W. Lee et al.

    Biochem.Pharmacol.

    (2002)
  • S.A.F. Rostom

    Bioorg. Med. Chem.

    (2006)
  • A. Coelho et al.

    Tetrahedron

    (2003)
  • S. Demirayak et al.

    Eur. J. Med. Chem.

    (2004)
  • A.A. Siddiqui et al.

    Eur. J. Med. Chem.

    (2010)
  • L.G. Costantino et al.

    Il Farmaco

    (2000)
  • W. Malinka et al.

    Il Farmaco

    (2004)
  • R. Bashir et al.

    Bioorg. Med. Chem. Lett.

    (2011)
  • S. Bano et al.

    Eur. J. Med.Chem.

    (2011)
  • M.G. Hollingshead et al.

    Life Sci.

    (1995)
  • S. Eckhardt

    Curr. Med. Chem.

    (2002)
  • A. Casini et al.

    Curr. Cancer Drug Targets

    (2002)
  • C.T. Supuran

    Nature Rev. Drug Discov.

    (2008)
  • A. Monge et al.

    J. Med. Chem.

    (1987)
  • C. Rubat et al.

    Chem. Pharm. Bull.

    (1990)
  • Cited by (66)

    • Synthesis and anticancer activity of thiourea derivatives bearing a benzodioxole moiety with EGFR inhibitory activity, apoptosis assay and molecular docking study

      2020, European Journal of Medicinal Chemistry
      Citation Excerpt :

      So, the antitumor studies focused on optimizing the activity against EGFR [21]. Study the mechanisms of anticancer agents provide significant information for chemotherapeutic drugs design [22,23]. One of the main strategies for the discovery of new drugs is combining two or more pharmacophoric moieties in a single molecule to obtain the synergistic effect or to obtain antitumor agents that have a novel mode of action.

    View all citing articles on Scopus
    View full text