Abstract: Preliminary clinical studies in humans have now been done which show both the efficacy of 10-propargyl-10dAM and a preferred dosage schedule for such treatments. In addition, it has now been determined that combinations of 10-propargyl-10-deazaaminopterin (preferably highly purified forms, substantially free of 10-deazaaminopterin) with taxols exhibit synergistic effectiveness in the treatment of tumors. 10-propargyl-10-deazaaminopterin and a taxol in therapeutically effective amounts can be administered concurrently, one right after the other, or with a period of time in between.

Abstract: Highly purified 10-propargyl-10-deazaaminopterin (10-propargyl-10dAM) compositions tested in xenograft models for their efficacy against human tumors are shown to be far superior to methotrexate ("MTX") and are even superior to the newer clinical candidate edatrexate ("EDX"). Moreover, 10-propragyl-10dAM showed a surprising ability to cure tumors such that there was no evidence of tumor growth several weeks after the cessation of therapy. Thus, highly purified compositions containing 10-propargyl-10dAM can be used to treat human tumors, particularly human mammary tumors and human lung cancer.

Abstract: Antiinflammatory and antineoplastic 5-deazaaminopterins and 5,10-dideazaaminopterins and their 5 and 10 alkyl analogs. A method for the treatment and prevention of inflammatory disease, such as rheumatoid arthritis, and for suppression and prevention of neoplastic growth in tumors and in blood forming tissues. A process for preparation of 10-deazaaminopterins.

Abstract: A process is provided for the preparation of 10-deazaaminopterins and 5,10- and 8,10-dideazaaminopterins starting from the corresponding homoterephthalic acid diester coupling the corresponding dicarboxylic acid diester having the formula: ##STR1## with the corresponding diaminopterin 6-methylene halide having the formula: ##STR2## thereby forming a pteroic acid diester having the formula: ##STR3## hydrolysing the two ester groups to form the corresponding carboxylic acid groups, and then monodecarboxylating the diacid, thereby removing the carboxylic acid group attached to the carbon alpha to the A group and forming a pteroic acid.

Abstract: There is disclosed certain heteroaroyl 10-deazaaminopterin and 5, 10 and 8, 10 di deazaminopterin compounds and their use for treatment of rheumatoid arthritis and related diseases and preparative process.Also disclosed are 10 alkenyl-(and alkynyl) 10-deazaminopterins also disclosed for treatment of rheumatoid arthritis and for leukemia and ascites tumors and preparative process.

Abstract: 8,10-Dideazatetrahydrofolic acid derivatives of the formula: ##STR1## where R.sub.1 and R.sub.2 are selected from hydrogen and alkyl having from one to about eight carbon atoms and the carboxylates and acid addition salts thereof, showing strong inhibition of L1210 murine leukemia cells in culture, modest inhibition of glycinamide ribotide transformylase and aminoimidazole carboxamide ribotide transferase, and insignificant inhibition of dihydrofolate reductase and thymidylate synthase enzymes.

Abstract: Compounds of the formula ##STR1## wherein R.sup.1 is H, methyl, ethyl, or chloro and R.sup.2 is hydrocarbyl of 1-12 C are useful as antifungal agents. Compounds of this series wherein R.sup.2 is 7-12 C are novel. A new synthetic method for the compounds is also described.