Ließ Loeffler

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A radioimmunoassay procedure has been developed for the direct measurement of methotrexate (MTX) in plasma, serum, cerebrospinal fluid, or urine samples. The assay is sensitive to levels of at least 100 pg of MTX and is highly specific for MTX in the presence of folinic acid (citrovorum factor), folic acid, tetrahydrogolic acid, and other folate analogs and(More)
A series of novel aziridinyl-substituted 1(2)H-indazole-4,7-diones and related 1(2)H-indazole-4,7-diones was synthesized and tested against Ehrlich ascites carcinoma growth in male CF1 mice. Ten of the test compounds, including two aziridinyl-substituted 1(2)H-indazole-4,7-diones, were found to be significantly active (inhibition of tumor growth greater(More)
A series of N-protected glycine activated esters was found to have antifertility activity in mice when administered intravaginally. The N-carbobenzoxyglycine vinyl ester and N-carbobenzoxyglycine 1,2-dibromoethyl ester analogs possessed the best activity in inhibiting pregnancy but were much less active when administered intraperitoneally. The acrosin(More)
cis-Malonato-diammino platinum(II) significantly inhibited P-388 lymphocytic leukemia cell proliferation at 10 mg/kg/day. Incorporation studies showed that DNA synthesis was inhibited following in vivo drug therapy. The major inhibitory effects appeared to be on thymidine kinase and dihydrofolate reductase activities and on overall purine synthesis, with(More)
A versatile and unambiguous synthetic route to some novel 4-(branched alkyl)benzoic acids via their beta-monosubstituted or beta,beta-disubstituted styrene-4-carboxylic acid precursors is described. The procedure starts with readily available aldehydes or ketones and the common intermediate p-bromobenzyltriphenyl-phosphonium bromide in a Wittig reaction and(More)