Research on potentially bioactive aza and thiaza polycyclic compounds containing a bridgehead nitrogen atom.<b>III</b>. Synthesis and antimicrobial activity of some 1,4-benzothiazines and pyrrolobenzothiazines
作者:Domenico Armenise、Giuseppe Trapani、Vittorio Arrivo、Elena Laraspata、Flaviano Morlacchi
DOI:10.1002/jhet.5570370634
日期:2000.11
4-benzothiazines 4 and 12, respectively, by using the dioxane/p-toluenesulfonic acid or polyphosphoric acid/chloroform systems. In contrast, in the same reaction conditions, 1,4-benzothiazines 5a-h do not provide the expected pyrrolobenzothiazines 7, and as for 5c-h considerable amount of the 2-amino-phenyl-sulfide 8 was obtained. The results of microbiological assays are reported.
N-(2,2-二烷氧基乙基)-1,4-苯并噻嗪内酰胺2和1,4-苯并噻嗪-砜10的环化反应生成相应的吡咯并[1,2,3- de ] -1,4-苯并噻嗪4分别通过使用二恶烷/对甲苯磺酸或多磷酸/氯仿体系来制备图12和12所示的化合物。相反,在相同的反应条件下,1,4-苯并噻嗪5a-h不能提供预期的吡咯并苯并噻嗪7,至于5c-h,获得了大量的2-氨基-苯基-硫化物8。报告了微生物测定的结果。