制备了含有硝基异丙基和(脲基氧基)甲基的碱性硝基苯磺酰胺,并将其评估为新型的低氧细胞选择性细胞毒剂。在体外,N-(2-氨基乙基)-N-甲基-3-硝基-4-(1-甲基-1-硝基乙基)苯磺酰胺盐酸盐(11)被证明对低氧EMT6乳腺癌细胞有优先毒性。在体外浓度为1 mM时,11将这些低氧细胞的存活分数降低至3 x 10(-3),而对需氧细胞没有影响。在放射实验中,有11种似乎充当缺氧细胞放射增敏剂以及选择性细胞毒剂。但是,以200 mg / kg ip或100 mg / kg iv的剂量对植入了实体EMT6肿瘤的BALB / c小鼠给药11时,没有明显的体内细胞毒性或放射增敏活性的证据。
Synthesis and evaluation of some nitrobenzenesulfonamides containing nitroisopropyl and (ureidooxy)methyl groups as novel hypoxic cell-selective cytotoxic agents
作者:Walfred S. Saari、John E. Schwering、Paulette A. Lyle、Edward L. Engelhardt、Alan C. Sartorelli、Sara Rockwell
DOI:10.1021/jm00114a024
日期:1991.10
prepared and evaluated as novel hypoxiccellselectivecytotoxic agents. In vitro, N-(2-aminoethyl)-N-methyl-3-nitro-4-(1-methyl-1-nitroethyl)benzene sulfonamide hydrochloride (11) proved to be preferentially toxic to hypoxicEMT6 mammary carcinoma cells. At 1 mM concentration in vitro, 11 reduced the surviving fraction of these hypoxiccells to 3 x 10(-3) with no effect on aerobic cells. In radiation
制备了含有硝基异丙基和(脲基氧基)甲基的碱性硝基苯磺酰胺,并将其评估为新型的低氧细胞选择性细胞毒剂。在体外,N-(2-氨基乙基)-N-甲基-3-硝基-4-(1-甲基-1-硝基乙基)苯磺酰胺盐酸盐(11)被证明对低氧EMT6乳腺癌细胞有优先毒性。在体外浓度为1 mM时,11将这些低氧细胞的存活分数降低至3 x 10(-3),而对需氧细胞没有影响。在放射实验中,有11种似乎充当缺氧细胞放射增敏剂以及选择性细胞毒剂。但是,以200 mg / kg ip或100 mg / kg iv的剂量对植入了实体EMT6肿瘤的BALB / c小鼠给药11时,没有明显的体内细胞毒性或放射增敏活性的证据。
N-substituted-3-nitro-4-(ureidooxymethyl)-benzenesulfonamides as
申请人:Merck & Co., Inc.
公开号:US04935443A1
公开(公告)日:1990-06-19
Disclosed are compounds having the formula: ##STR1## wherein: R.sub.1 is hydrogen, analkyl group having 1 to 6 carbon atoms, an alkyl group having 1 to 6 carbon atoms in which one or more of the carbon atoms are substituted with a hydroxy group; R.sub.2 is an alkyl group having 1 to 6 carbon atoms in which one or more of the carbon atoms are substituted with a hydroxy group, an alkyl group having 1 to 6 carbon atoms which contains an amino group in which the amino function is substituted with hydrogen or one or two individual alkyl groups having 1 to 6 carbon atoms; or a pharmaceutically acceptable salt thereof. These compounds increase the sensitivity of hypoxic cancer cells to radiation. Methods of preparing such compounds, protocols for administering them to human patients and animals, and pharmaceutical compositions containing them are also disclosed.
Synthesis and Evaluation of Alternative Substrates for Arginasease
作者:Shoufa Han、Roger A. Moore、Ronald E. Viola
DOI:10.1006/bioo.2001.1228
日期:2002.4
functions as efficiently as the natural substrate. The desamino analog shows extremely low turnover, while the k(cat) of the descarboxy analog is only 75-fold lower than that of arginine. These results suggest that the bridging nitrogen of L-arginine is not important for either substrate binding or catalysis, while the alpha-carboxyl group facilitates substrate binding, and the alpha-amino group is necessary