Concise and high-yield synthesis of T808 and T808P for radiosynthesis of [18F]-T808, a PET tau tracer for Alzheimer’s disease
作者:Mingzhang Gao、Min Wang、Qi-Huang Zheng
DOI:10.1016/j.bmcl.2013.11.025
日期:2014.1
steps using ethyl vinyl ether and trichlorocetyl chloride as starting materials. The overall chemical yields of T808 and T808P were 35% and 52%, respectively. [18F]-T808 was synthesized from T808P by the nucleophilic substitution with K[18F]F/Kryptofix 2.2.2 and isolated by HPLC combined with solid-phase extraction (SPE) purification in 35–45% radiochemical yield with 37–370 GBq/μmol specific activity
以乙基乙烯基醚和三氯十六烷基氯为起始原料,通过六个步骤合成了真实的标准品T808及其相应的甲磺酸酯前体T808P。T808和T808P的总化学收率分别为35%和52%。[ 18 F] -T808是由T808P通过K [ 18 F] F / Kryptofix 2.2.2的亲核取代合成的,并通过HPLC分离并结合固相萃取(SPE)纯化,放射化学产率为35-45%,37-轰击(EOB)结束时的比活为370 GBq /μmol。