title: Novel synthesis, cytotoxic evaluation, and structure-activity relationship studies of a series of alpha-alkylidene-gamma-lactones and lactams.
abstract: 5-Alkyl- and 5-arylalkyl-3-methylenedihydrofuran-2-ones 13a-e, 3-alkylidenedihydrofuran-2-ones 18a-c, and 3-methylenepyrrolidin-2-ones 16a-e were synthesized utilizing ethyl 2-diethoxyphosphoryl-4-nitroalkanoates 9a-e as common intermediates. All obtained compounds were tested against L-1210, HL-60, and NALM-6 leukemia cells. The highest cytotoxic activity was observed for 3-methylenefuranones 13d,e bearing benzyl or 3,4-dimethoxyphenylmethyl substituents at position 5, with IC(50) values of 5.4 and 6.0 microM, respectively. Contrary to the literature reports, no enhancement in activity due to the presence of a hydroxy group was found when the cytotoxicity of furanones 13a,b,d and 5-(1'-hydroxyalkyl)-3-methylenedihydrofuran-2-ones 6a,b,d was compared. The anticancer activity of pyrrolidinones 16a-e and 3-alkylidenefuranones 18a-c was much weaker than that of furanones 13a-e.
authors.affiliation: Institute of Organic Chemistry, Technical University of Łódź, Zeromskiego 116, 90-924 Łódź, Poland. tjanecki@p.lodz.pl
authors.forename: Tomasz
authors.initials: T
authors.lastname: Janecki
authors.forename: Edyta
authors.initials: E
authors.lastname: Błaszczyk
authors.forename: Kazimierz
authors.initials: K
authors.lastname: Studzian
authors.forename: Anna
authors.initials: A
authors.lastname: Janecka
authors.forename: Urszula
authors.initials: U
authors.lastname: Krajewska
authors.forename: Marek
authors.initials: M
authors.lastname: Rózalski
mesh_terms: D015107:4-Butyrolactone / Q000031:analogs & derivatives / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D000970:Antineoplastic Agents / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D045744:Cell Line, Tumor; D004354:Drug Screening Assays, Antitumor; D006801:Humans; D007769:Lactams / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D007783:Lactones / Q000138:chemical synthesis* / Q000737:chemistry / Q000494:pharmacology; D011759:Pyrrolidines / Q000138:chemical synthesis / Q000737:chemistry / Q000494:pharmacology; D013329:Structure-Activity Relationship
chemical_list: D000970:Antineoplastic Agents; D007769:Lactams; D007783:Lactones; D011759:Pyrrolidines; D015107:4-Butyrolactone