31608-22-7Relevant articles and documents
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Heather,J.B. et al.
, p. 2313 - 2316 (1973)
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Synthesis and Cytotoxicity of 1,4-Naphthoquinone Oxime Derivatives
Zhang,Dong,Meng,Huang,Li
, p. 2388 - 2393 (2018)
A series of hydroxylated 1,4-naphthoquinone oximes were designed and synthesized. The in vitro cytotoxicity of these compounds was evaluated against five human cancer cell lines and human skin fibroblast cell line. Among them, compounds (1E,4E)-6-{1-[(5-Hydroxypentyl)oxy]-2,2-dimethylbut-3-en-1-yl}-5,8- dimethoxynaphthalene-1,4-dione dioxime and (1E,4E)-6-{1-[(6-Hydroxyhexyl)oxy]-2,2-dimethylbut-3-en-1-yl}-5,8-dimethoxynaphthalene-1,4-dione dioxime displayed higher cytotoxicity in three cancer cell lines than the positive drug 5-fluorouracil.
TAU-PROTEIN TARGETING PROTACS AND ASSOCIATED METHODS OF USE
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Paragraph 1381, (2018/05/24)
The present disclosure relates to bifunctional compounds, which find utility as modulators of tau protein. In particular, the present disclosure is directed to bifunctional compounds, which contain on one end a VHL or cereblon ligand which binds to the E3 ubiquitin ligase and on the other end a moiety which binds tau protein, such that tau protein is placed in proximity to the ubiquitin ligase to effect degradation (and inhibition) of tau. The present disclosure exhibits a broad range of pharmacological activities associated with degradation/inhibition of tau protein. Diseases or disorders that result from aggregation or accumulation of tau protein are treated or prevented with compounds and compositions of the present disclosure.
Unusual Adsorption at the Air-Water Interface of a Zwitterionic Carboxybetaine with a Large Charge Separation
Ma, Kun,Li, Pei Xun,Dong, Chu Chuan,Thomas, Robert K.,Penfold, Jeffrey
, p. 3340 - 3347 (2016/05/10)
The structures of layers of three different dodecylcarboxybetaine surfactants adsorbed at the air-water interface have been determined by neutron reflection. The zwitterionic compounds differed in the length of the spacer separating the quaternary ammonium and carboxylate groups, which was (CH2)1, (CH2)4, or (CH2)8. The limiting area per molecule was found to be 45, 52, or 84 ?2, respectively, and compared reasonably with results from surface tension showing that the Gibbs prefactor is 1 in each case. Isotopic labeling was used to distinguish between the position of the alkyl and spacer groups in the layer. The spacer was found to be well-immersed in water for the (CH2)1 and (CH2)4 spacers but significantly above water for the (CH2)8 spacer. The distribution of the (CH2)8 spacer along the surface normal was found to be similar to that of the dodecyl group; i.e., it projects out of the water, contrary to an earlier hypothesis that it forms a loop. Comparison of the overlap of water with dodecyl and spacer groups also indicates that the (CH2)8 spacer is well out of the water. This in turn suggests that the anionic carboxylic acid group, which is dissociated in solution, is not ionized in the adsorbed layer. A further observation is that the dodecylcarboxybetaine with the (CH2)8 spacer reaches surface saturation at one-tenth of the critical micelle concentration. This is highly unusual and is attributed to the long spacer destabilizing the micelle relative to the surface layer.
