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New Macrocyclic Diterpenes From Euphorbia Connata Boiss. With Cytotoxic Activities on Human Breast Cancer Cell Lines Publisher Pubmed



Shadi S1 ; Saeidi H1 ; Ghanadian M2, 3 ; Rahimnejad MR1 ; Aghaei M3 ; Ayatollahi SM4 ; Iqbal Choudhary M5, 6
Authors
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Authors Affiliations
  1. 1. Department of Biology, Faculty of Science, University of Isfahan, Isfahan, Iran
  2. 2. Isfahan Pharmaceutical Sciences Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
  3. 3. Isfahan Faculty of Pharmacy and Pharmaceutical Sciences, Isfahan University of Medical Sciences, Hezar Jerib Ave., P.O. Box 81746-73461, Isfahan, Iran
  4. 4. Phytochemistry Research Center and School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
  5. 5. Dr. Panjwani Center for Molecular Medicine and Drug Research, International Center for Chemical and Biological Sciences, University of Karachi, Karachi, 75270, Pakistan
  6. 6. Department of Biochemistry, Faculty of Science, King Abdulaziz University, Jeddah, 214421, Saudi Arabia

Source: Natural Product Research Published:2016


Abstract

Acetone:chloroform (1:2) extract of the aerial parts of Euphorbia connata Boiss. (Euphorbiaceae) was investigated for its diterpenoids. This led to the isolation of one known and two new diterpenes, belonging to the pentahydroxy-13(17)-epoxy-8,10(18)-myrsinadiene and tetrahydroxy-5,6-epoxy-14-oxo-jatropha-11(E)-ene classes. The structures were elucidated based on 13C and 1H NMR as well as 2D NMR, IR and MS spectra and the cytotoxicity for compounds 1-3 were evaluated by using MTT assay against two human breast cancer cell lines. Myrsinane-type compounds - 3,7,14,15-tetraacetyl-5-propanoyl-13(17)-epoxy-8,10(18)-myrsinadiene (1) and 3,7,10,14,15-pentaacetyl-5-butanoyl-13,17-epoxy-8-myrsinene (2) - exhibited moderate inhibitory effects, with IC50 values of 24.53 ± 3.39 and 26.67 ± 1.41 μM against the MDA-MB cell line, and 37.73 ± 3.41 and 34.57 ± 2.12 μM against the MCF-7 cell line, respectively. Jatrophane-type diterpene - 5,6-epoxy-8,9,15-triacetyl-3-benzoyl-14-oxo-jatropha-11(E)-ene (3) - showed weak cytotoxicity, with IC50 values of 55.67 ± 7.09 μM against MDA-MB, and moderate cytotoxicity with IC50 values of 24.33 ± 3.21 μM against MCF-7 cell line. © 2014 Taylor & Francis.
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