A regiospecific and enantiospecific synthesis of tritium-labeled 28-homocastasterone is reported. Appropriate chlorocarbonate, efficiently synthesized from the starting 28-homocastasterone in an overall yield of 46%, undergoes catalytic tritium dechlorination by the T2 /Pd[0]/Et3 N system, providing 28-[3β-3 H]homocastasterone, in a good yield, radiochemical purity (>97%), and with a high specific activity (5.8 Ci/mmol). Copyright © 2016 John Wiley & Sons, Ltd.
Tomáš Elbert, Mahadeo R Patil, Aleš Marek. Enantiospecific tritium labeling of 28-homocastasterone. Journal of labelled compounds & radiopharmaceuticals. 2017 Mar;60(3):176-182
PMID: 27976809
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