Total synthesis and radiolabelling of an efficient rt-PA inhibitor: [11C] (Z,Z)-BABCH. A first route to [11C] labelled amidines
作者:Fabrice Siméon、Franck Sobrio、Fabienne Gourand、Louisa Barré
DOI:10.1039/b009850g
日期:——
are general and have been successfully applied to the high yielding preparation of other aldol adducts such as 2b and 2c. The two step transformation of (E,E) 2a into the asymmetric (Z,Z)-2-(4-cyanobenzylidene)-7-(4-iodobenzylidene)cycloheptan-1-one 5 has been optimized. The radiochemical yield for the radiolabelling of 5 with K[11CN] followed by palladium catalysis to give the labelled bisnitrile 7 was
快速合成放射性标记的t-PA终止位8的有效途径丝氨酸蛋白酶抑制剂进行说明。(E,E)-2,7-双(4-碘亚苄基)环庚烷-1-酮2a以高收率(> 90%)从环庚酮 和 4-碘苯甲醛,前所未有地使用CsOH或使用催化量(<20%)的微波辐射 双(甲氧基苯基)碲化物(BMPTO)。这些方法是通用的,已成功地应用于其他醛醇加合物(如2b和2c)的高收率制备。(E,E)2a到不对称的(Z,Z)-2-(4-氰基亚苄基)-7-(4-碘亚苄基)环庚烷-1-酮5的两步转化已得到优化。用K [ 11 CN]放射性标记5,然后钯催化生成标记的双腈7的放射化学产率为80-90%。报告了一系列使用各种方法进行的实验,并且第一个制备[ 11相应的[ 11 C]双腈中的C] withN-乙酰半胱氨酸被表达; 放射化学收率,基于分析液相色谱放射酰胺化率为80%。分离出[ 11 C] t-PA终止子,其放射化学收率总体在5