title: Isothiazolopyrimidines--new group of anticancer agents. I.
abstract: Synthesis and biological properties of 27 derivatives of 5-amino-3-methylisothiazolo[5,4-d]pyrimidine-4-dione and of 3-methyl-5-semicarbazido-4-isothiazolocarboxylic acid ethyl esters are discussed. 5-Amino-3-methylisothiazolo[5,4-d]pyrimidine-4-dione was converted by reaction with aldehydes into Schiff bases, which under reduction of NaBH4, were transformed into appropriate N-methylene analogs. 3-Methyl-5-semicarbazido-4-isothiazolocarboxylic acid ethyl esters in reaction with aldehydes were converted into benzylidene derivatives. Some of the compounds obtained, especially those of Schiff base structure, displayed strong activity against L-1210 leukemia, Sa-180 sarcoma. Ehrlich carcinoma and Nemeth Kellner lymphoma.
authors.affiliation: Department of Organic Chemistry, Medical Academy, Wrocław.
authors.forename: Z
authors.initials: Z
authors.lastname: Machoń
authors.forename: J
authors.initials: J
authors.lastname: Wieczorek
authors.forename: M
authors.initials: M
authors.lastname: Mordarski
mesh_terms: D000818:Animals; D000970:Antineoplastic Agents / Q000138:chemical synthesis / Q000627:therapeutic use*; D002286:Carcinoma, Ehrlich Tumor / Q000188:drug therapy / Q000473:pathology; D002455:Cell Division / Q000187:drug effects; D055598:Chemical Phenomena; D002621:Chemistry; D004354:Drug Screening Assays, Antitumor; D007939:Leukemia L1210 / Q000188:drug therapy / Q000473:pathology; D008223:Lymphoma / Q000188:drug therapy / Q000473:pathology; D051379:Mice; D008807:Mice, Inbred BALB C; D008811:Mice, Inbred DBA; D009374:Neoplasms, Experimental / Q000188:drug therapy* / Q000473:pathology; D011743:Pyrimidines / Q000138:chemical synthesis / Q000627:therapeutic use*; D012513:Sarcoma, Experimental / Q000188:drug therapy / Q000473:pathology; D013844:Thiazoles / Q000138:chemical synthesis / Q000627:therapeutic use*
chemical_list: D000970:Antineoplastic Agents; D011743:Pyrimidines; D013844:Thiazoles