Total synthesis ofdl -9(11)-dehydrotestosterone anddl -testosterone

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Abstract

17β-Hydroxy-des-A-androst-9-en-5-one (II, R=OH), prepared fromtrans-1β-hydroxy-8-methyl-4, 5-(3′-methyl-4′-methoxybenzo)-hydrindane (I, R=CH3)′, has been converted intodl-9(II)-dehydrotestosterone (IV, R=OH) anddl-testosterone (IX) in very short sequences of steps, albeit in poor yields.