title: Synthesis and cytotoxic activity of nitric oxide-releasing isosteviol derivatives.
abstract: Fifteen novel hybrids containing diterpene skeleton and nitric oxide (NO) donor were prepared from isosteviol. All the compounds were tested on preliminary cytotoxicity, and the results showed that six target compounds (8c, 10b, 14a, 14c, 18c, and 18d) exhibited anti-proliferation activity on HepG2 cells, with 8c (IC50=4.24 μM) and 18d (IC50=2.75 μM) superior to the positive control CDDO-Me (2-cyano-3,12-dioxooleana-1,9(11)-dien-28-acid methyl ester, IC50=4.99 μM); eleven target compounds (8a-c, 9a-c, 10a-b, 14a, 14c, 18d) exhibited anti-proliferation activities on B16F10 cells at different levels, among them, seven compounds were more potent than comptothecin (IC50=2.78 μM) and CDDO-Me (IC50=5.85 μM), particularly, 10b (IC50=0.02 μM) presented the strongest effect, which was selected as a candidate for further study.
authors.affiliation: Department of Natural Medicinal Chemistry, China Pharmaceutical University, 24 Tongjiaxiang Road, Nanjing 210009, China; Zhenjiang Institute for Drug Control, 62 Nanxu Road, Zhenjiang 212000, China.
authors.forename: Ting-ting
authors.initials: TT
authors.lastname: Wang
authors.affiliation: Department of Natural Medicinal Chemistry, China Pharmaceutical University, 24 Tongjiaxiang Road, Nanjing 210009, China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Liu
authors.affiliation: Department of Natural Medicinal Chemistry, China Pharmaceutical University, 24 Tongjiaxiang Road, Nanjing 210009, China. Electronic address: chenliduo12@gmail.com.
authors.forename: Li
authors.initials: L
authors.lastname: Chen
mesh_terms: D000970:Antineoplastic Agents / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology*; D045744:Cell Line, Tumor; D049109:Cell Proliferation / Q000187:drug effects; D045786:Diterpenes, Kaurane / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology*; D006801:Humans; D009369:Neoplasms / Q000188:drug therapy; D020030:Nitric Oxide Donors / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology*
chemical_list: D000970:Antineoplastic Agents; D045786:Diterpenes, Kaurane; D020030:Nitric Oxide Donors; C515747:isosteviol
keywords: Cytotoxicity; Furoxan; Isosteviol; NO-donor; Structural modification