title: Synthesis, antiviral, and antitumor activity of 2-substituted purine methylenecyclopropane analogues of nucleosides.
abstract: The Z- and E-2-fluoro- and 2-chloropurine methylenecyclopropanes 9a,b and 10a,b as well as enantiomeric Z-isoguanine methylenecyclopropanes 11a,b and their phenyl phosphoralaninate pronucleotides 11c,d were synthesized and their antiviral activity against several viruses was evaluated. Fluoro analogues 9a and 10a were active against human cytomegalovirus but they were cytotoxic at approximately the same concentrations. Chloro derivatives 9b and 10b were non-cytotoxic and effective against Epstein-Barr virus in Daudi cells. Isoguanine analogues 11a-d lacked antiviral activity but pronucleotides 11c,d were substrates for porcine liver esterase. From the group of 9a,b and 10a,b, the fluoro analogues 9a and 10a exhibited antitumor activity but only the Z-isomer 9a had a selective effect.
authors.affiliation: Developmental Therapeutics Program, Barbara Ann Karmanos Cancer Institute, Wayne State University School of Medicine, Detroit, MI 48201-1379, USA.
authors.forename: Xinrong
authors.initials: X
authors.lastname: Qin
authors.forename: Xinchao
authors.initials: X
authors.lastname: Chen
authors.forename: Kun
authors.initials: K
authors.lastname: Wang
authors.forename: Lisa
authors.initials: L
authors.lastname: Polin
authors.forename: Earl R
authors.initials: ER
authors.lastname: Kern
authors.forename: John C
authors.initials: JC
authors.lastname: Drach
authors.forename: Elizabeth
authors.initials: E
authors.lastname: Gullen
authors.forename: Yung-Chi
authors.initials: YC
authors.lastname: Cheng
authors.forename: Jiri
authors.initials: J
authors.lastname: Zemlicka
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D000998:Antiviral Agents / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology*; D045744:Cell Line, Tumor; D003521:Cyclopropanes / Q000737:chemistry*; D006801:Humans; D006868:Hydrolysis; D009682:Magnetic Resonance Spectroscopy; D051379:Mice; D015394:Molecular Structure; D009705:Nucleosides / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology*; D009711:Nucleotides / Q000737:chemistry; D011687:Purines / Q000737:chemistry; D013329:Structure-Activity Relationship
chemical_list: D000970:Antineoplastic Agents; D000998:Antiviral Agents; D003521:Cyclopropanes; D009705:Nucleosides; D009711:Nucleotides; D011687:Purines; C508672:methylenecyclopropane