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À propos de : Synthesis of (−)-Astrogorgiadiol        

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  • Synthesis of (−)-Astrogorgiadiol
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  • Reaction of Rh2(S)-PTPA4 with the (R)-citronellol-derived α-diazo-β-ketoester 1 led to the formationof cyclic β-ketoester 2 in 95% yield and 48% diastereomeric excess. The purity of 2 was increasedto >99% de after one crystallization. To demonstrate its utility in steroid total synthesis, theβ-ketoester 2 was carried on to secosteroid (−)-astrogorgiadiol (3), a naturally occuring vitamin Danalogue with antiproliferative properties.
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