Medicinal Chemistry Research

, Volume 23, Issue 6, pp 2909–2915 | Cite as

Synthesis, structure, and in vitro anticancer activity of new polycyclic 1,2-diazines

  • Dorina Mantu
  • Dan Maftei
  • Dorina Iurea
  • Cornelia Ursu
  • Vasilichia Bejan
Original Research


The synthesis, structure, and in vitro anticancer activity of a new class of anticancer derivatives with dihydrobenzo[5,6]isoindolo[1,2-a]phthalazine and dihydrobenzo[f]pyridazino[6,1-a]isoindole skeletons are presented. The preparation is straight and efficient, involving two steps only: a N-alkylation of the pyridazine or phthalazine heterocycle, followed by a [3 + 2] dipolar cycloaddition of 1,2-diazinium ylides to the corresponding dipolarophiles. The synthesis was performed under microwave and ultrasound (US) irradiation as well as under conventional thermal heating. The most effective conditions in term of yields and time were found to be US irradiation. The penta- and tetra-cyclic 1,2-diazines were evaluated for their in vitro anticancer activity. The pentacyclic 1,2-diazine derivatives exhibit a significant anticancer activity against Non-Small Cell Lung Cancer NCI-H460, Leukemia MOLT-4, Leukemia CCRF-CEM, and Breast Cancer MCF7. A feasible explanation for anticancer efficiency of the pentacyclic 1,2-diazines have been furnished, being correlated with the mechanisms of action.

Graphical Abstract

The synthesis (conventional thermal heating, microwave and ultrasound irradiation), structure, and in vitro anticancer activity of a new class of anticancer molecules with polycyclic 1,2-diazines skeleton is presented.


Polycyclic 1,2-diazines Cycloadditions Benzoquinone Anticancer 



Authors are thankful to POSDRU Grant 89/1.5/S/49944, “Developing the innovation capacity and improving the impact of research through post-doctoral programs,” for financial support.

Supplementary material

44_2013_878_MOESM1_ESM.doc (1.9 mb)
The NMR spectra (1H NMR, 13C NMR, 2D-COSY, 2D-HETCOR (HMQC), and long-range 2D-HETCOR (HMBC)) for compounds (5b) and (6b). (DOC 1896 kb)


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Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Dorina Mantu
    • 1
  • Dan Maftei
    • 1
  • Dorina Iurea
    • 2
  • Cornelia Ursu
    • 3
  • Vasilichia Bejan
    • 1
  1. 1.Department of Organic and Biochemistry“Al. I. Cuza” University of IasiIasiRomania
  2. 2.Biological Research InstituteIasiRomania
  3. 3.Faculty of Dentistry“Apollonia” University of IasiIasiRomania

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