نتایج جستجو برای: polycarbonyl
تعداد نتایج: 17 فیلتر نتایج به سال:
Underwood and co-workers (27) recently re ported that a number of a-ketoaldehydes and closely related compounds were active against Newcastle disease virus (NJKD strain) and in fluenza virus (PR-8 strain) in embryonated eggs. These substances also had potent virus-inactivat ing effects in vitro. Underwood and Weed (28) found that glyoxal and methylglyoxal were active virucides in blood. Consequ...
Recently, simple carbon based polymers have been synthesized at high pressures in silicalite, a pure SiO2 zeolite with a 3D system of mutually interconnected microchannels. These protocols permitted otherwise unstable polymers to be stabilized and protected from the atmosphere and to obtain an entirely novel class of nanocomposites with modified physical properties. In these 3-D systems, channe...
The authors have previously investigated the carcinostatic effect of simple hydrazine deriva tives. In early work (6, 7) acetic hydrazide and some methylated derivatives of formic hydrazide were found to have an inhibitory effect on mouse Adenocarcinoma 755. A number of substituted hydrazines and related compounds were also evaluated on myeloid mouse leukemia C1498 (8). The development of hydra...
The authors have previously noted the moder ate antileukemic effects of a-ketoaldehydes (2) and the considerably more potent antileukemic effects of glyoxal bis(guanylhydrazone) and methylglyoxal bis(guanylhydrazone) (1). These com pounds and closely related drugs were also studied as inhibitors of Adenocarcinoma 755. Preliminary investigation indicated that hydroxymethylglyoxal bis(guanylhydra...
The behavior of hydroxypyruvic acid, CHzOH. CO. COOH, and some of its transformation products toward periodic acid, treated in detail in the preceding paper (I), suggested an orienting study of the action of this oxidant on glyoxylic acid, CHO. COOH, and other a-keto acids or on compounds giving rise to such keto acids, following oxidation by periodate. While cr-glycols, a-ketols, a-diketones, ...
Frogs of the neotropical family Dendrobatidae produce a remarkably diverse array of biologically active alkaloids. One of the major classes of these amphibian alkaloids are the decahydroquinolines, which have been isolated not only from skin extracts of dendrobatid and mantelline frogs but also from bufonid toads, tunicates, marine flatworms, and myrmicine ants. They possess either a cis or tra...
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