名称:
The novel synthesis of the protease inhibitor (S)-1-chloro-3-[(p-tolylsulfonyl)amino]-7-amino-2-[5,5,6,6-3H]heptanone ([3H]TLCK) labeled to high specific activity with tritium
摘要:
The protease inhibitor (S)-1-chloro-3-[(p-tolylsulfonyl)amino][5,5,6,6-H-3]heptanone ([H-3]TLCK) was prepared in an overall 41% radiochemical yield with a specific activity of 1.6 Ci/mmol in a 'one-pot' 3 step sequence beginning with (S)-6-[[(1,1-dimethylethyl)oxy]carbonyl]-2-(p-tolylsulfonyl)amino[4,4,5,5-H-3]hexanoic acid. The latter was prepared with a specific activity of 123 Ci/mmol in a 3 step sequence beginning with the stereospecific enzymatic hydrolysis of the commercially available racemic 2-acetylamino-6-[[(1,1-dimethylethyl)-oxy]carbonyl]aminohexan-4-ynoic acid, followed by tosylation and then palladium catalyzed reduction of the triple bond under tritium.