Hydroxynitrobiphenyls produced by photochemical reaction of biphenyl in aqueous nitrate solution and their mutagenicities.
作者:JUNZO SUZUKI、TOSHIYUKI SATO、SHIZUO SUZUKI
DOI:10.1248/cpb.33.2507
日期:——
From the photoreaction products of biphenyl in aqueous nitrate solution, the following eight hydroxynitrobiphenyls were isolated by silica gel column chromatography and thin layer chromatography on silica gel and polyamide plates : 4-hydroxy-3, 5-dinitrobiphenyl (F1 (2) or), 4, 2'-dihydroxy-3, 3'-dinitrobiphenyl (F4 (1)-3), 4-hydroxy-3, 3'-dinitrobiphenyl (F4 (1)-4), a hydroxy-dinitrobiphenyl (F4 (1)-5a), 4, 4'-dihydroxy-3, 3'-dinitrobiphenyl (F4 (1)-5b), a dihydroxydinitrobiphenyl (F4 (1)-6), 2-hydroxy-3-nitrobiphenyl (F5 (1)) and 4-hydroxy-3-nitrobiphenyl (F5 (2)). Among these compounds, four dinitro compounds, F1 (2) or, F4 (1)-4, F4 (1)-5a and F4 (1)-6, exhibited mutagenicity toward S. typhimurium TA 98 without S-9 mix. The major products in this reaction were nitrophenylphenols, F5 (1) and F5 (2), and these were non-mutagenic. The major mutagens, F4 (1)-5a and F4 (1)-6, were produced in such small amounts that the exact structures could not be determined. The mechanism of production of these hydroxynitrobiphenyls is discussed on the basis of the results of analysis of the reaction mixture by high-performance liquid chromatography.
从含水硝酸盐溶液中双苯基的光反应产物中,通过硅胶柱层析和在硅胶及聚酰胺板上的薄层层析分离出以下八种羟基硝基双苯基:4-羟基-3, 5-二硝基双苯基(F1 (2) 或),4, 2'-二羟基-3, 3'-二硝基双苯基(F4 (1)-3),4-羟基-3, 3'-二硝基双苯基(F4 (1)-4),一种羟基-二硝基双苯基(F4 (1)-5a),4, 4'-二羟基-3, 3'-二硝基双苯基(F4 (1)-5b),一种二羟基二硝基双苯基(F4 (1)-6),2-羟基-3-硝基双苯基(F5 (1))和4-羟基-3-硝基双苯基(F5 (2))。在这些化合物中,四种二硝基化合物F1 (2) 或,F4 (1)-4,F4 (1)-5a 和 F4 (1)-6在无S-9混合物的情况下对鼠伤寒沙门菌TA 98表现出诱变性。该反应的主要产物是硝基酚双苯(F5 (1) 和 F5 (2)),而这些是非诱变性的。主要诱变物F4 (1)-5a 和 F4 (1)-6的生成量非常小,以至于无法确定其确切结构。根据高效液相色谱对反应混合物的分析结果,讨论了这些羟基硝基双苯基的生成机制。