Coumarin

Amin, K. M., F. M. Awadalla, A. A. M. Eissa, and S. M. Abou-Seri, "Design, synthesis and vasorelaxant evaluation of novel coumarin–pyrimidine hybrids", Bioorganic & Medicinal Chemistry , vol. 19, pp. 6087–6097, 2011.
Amin, K. M., A. A. M. Eissa, S. M. Abou-Seri, and F. M. Awadallah, "Synthesis and biological evaluation of novel coumarin-pyrazoline hybrids endowed with phenylsulfonyl moiety as antitumor agents", European Journal of Medicinal Chemistry, vol. 60, pp. 187-198, 2013.