was obtained as the result of sequential reactions." the introduction o/'gelwlanium dibromide at the C-Br bond of fl-bromosO,rene and the alcoholvsis o/" tribromogermane to the triethoxv derivative with subsequent transether(fication by triethanolamine. The structure of fl-sO,o,lgermatrane and 2.215/[ length of the transannular N~e bond were established by the method of NMR and X-ray diffraction anaO,sis. It was .[bund that the introduction of the CH=CH portion between the aromatic ring and the atrane grouping Iowel:~ the toxicity of the compound by the factor 0./'40.
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