作者:V.P. Shevchenko、I.Yu. Nagaev、N.F. Myasoedov、A.B. Susan、R. Anderskewitz、F.W. Birke、K-H. Switek
DOI:10.1002/jlcr.661
日期:2003.3.15
Various approaches to the synthesis of tritium-labelled BIIL 260 with high specific radioactivity were investigated. Attempts to incorporate tritium directly into BIIL 260 were made by solid-phase isotope exchange with tritium gas and by isotope exchange with tritiated water which yielded a final product with specific activities ranging from 2 to 7 Ci/mmol. However, the solid-phase and liquid-phase dehalogenations of an appropriate synthon fragment of BIIL 260 followed by its subsequent conversion to the final product via chemical synthesis yielded the desired tritium-labelled BIIL 260 with specific activities of 25 or 71 Ci/mmol, depending upon the precursors and methods used in the dehalogenation step. Copyright © 2002 John Wiley & Sons, Ltd.
研究了合成具有高比放射性的氚标记 BIIL 260 的各种方法。通过与氚气进行固相同位素交换和与氚化水进行同位素交换,尝试将氚直接加入 BIIL 260,最终产物的比放射性活度为 2 至 7 Ci/mmol。然而,对 BIIL 260 的适当合成片段进行固相和液相脱卤,然后通过化学合成将其转化为最终产品,可获得所需的氚标记 BIIL 260,其比活度为 25 或 71 Ci/mmol,具体取决于脱卤步骤中使用的前体和方法。Copyright © 2002 John Wiley & Sons, Ltd. All Rights Reserved.