Antitumor agents. 25. Synthesis and antitumor activity of uracil and thymine .alpha.-methylene-.gamma.-lactones and related derivatives

Antitumor agents. 25. Synthesis and antitumor activity of uracil and thymine .alpha.-methylene-.gamma.-lactones and related derivatives New .alpha.-methylene .gamma.-lactone derivatives of substituted nucleic acid bases as potential anticancer agents Antitumor agents. 31. Helenalin sym-dimethylethylenediamine reaction products and related derivatives Preparation and biological evaluation of γ-fluoromethyl-α-methylene-γ-butyrolactone and γ-butyrolactam Synthesis and biological activities of novel 5-(2-acylethynyl)uracils New Uracil Dimers Showing Erythroid Differentiation Inducing Activities Antitumor agents. 32. Synthesis and antitumor activity of cyclopentenone derivatives related to helenalin Synthesis of 2,3-di- and 2,2,3-trisubstituted-3-methoxycarbonyl-γ-butyrolactones as potent antitumor agents Studies on the syntheses of heterocyclic compounds. 845. Studies on the synthesis of chemotherapeutics. 10. Synthesis and antitumor activity of N-acyl- and N-(alkoxycarbonyl)-5-fluorouracil derivatives Synthesis of modified pyrimidine bases and positive impact of chemically reactive substituents on their in vitro antiproliferative activity