Add time:09/29/2019 Source:infona.pl
For the first time, [3α‐3H] 17α‐hydroxy Pregnenolone (cas 145-13-1) (1) was synthesized through a multiple step sequence. The presence of [3β‐3H] isomer in RP‐HPLC purified product was identified by tritium NMR. The [3β‐3H] isomer was then separated from [3α‐3H] 17α‐hydroxy pregnenolone with chiralPAK AD‐H column. [3α‐3H] pregnenolone (2) was synthesized from commercial available 5‐pregnen‐3,20‐dione in one step with an improved procedure.
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