2008
DOI: 10.1016/j.tet.2008.02.101
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Parallel kinetic resolution of propargyl ketols: formal synthesis of (+)-bakkenolide A

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Cited by 18 publications
(14 citation statements)
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“…As an application of the parallel kinetic resolution of racemic propargyl ketols 1, 15) we report the total synthesis of (ϩ)-bakkenolide-A using Mitsuhashi's protocol 16) for construction of the spirolactone moiety.…”
Section: )mentioning
confidence: 99%
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“…As an application of the parallel kinetic resolution of racemic propargyl ketols 1, 15) we report the total synthesis of (ϩ)-bakkenolide-A using Mitsuhashi's protocol 16) for construction of the spirolactone moiety.…”
Section: )mentioning
confidence: 99%
“…In addition, we recently reported a parallel kinetic resolution of racemic propargyl ketols 1 for a formal synthesis of (ϩ)-bakkenolide-A (Chart 1). 15) These three reactions are possible routes to the synthesis of the same optically active hydrindanes. As an application of the parallel kinetic resolution of racemic propargyl ketols 1, 15) we report the total synthesis of (ϩ)-bakkenolide-A using Mitsuhashi's protocol 16) for construction of the spirolactone moiety.…”
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“…To the best of our knowledge, only four SDRRMs 1 have been reported in the literature 2 8 ; of these, just two 3 , 4 lead to non-isomeric structures. The structural divergence was usually achieved through the ability of one of the diastereomeric products to undergo a rearrangement or participate in a subsequent reaction with another compound present in the reaction mixture.…”
Section: Introductionmentioning
confidence: 98%
“…[%] [b] e.r. [ 1 g À30 > 95 92.5:7.5 8 [d] 1 g À30 > 95 89: 11 9 1 g À50 > 95 95: 5 10 [10,12,13] Beispielsweise konnte ausgehend von 4 a durch Behandeln mit MeOH in Toluol bei 90 8C der d-Amino-b-ketoester 5 in quantitativer Ausbeute erhalten werden. Nach ausgiebigen Untersuchungen folgerten wir, dass in diesem Prozess keine Racemisierung auftritt, da das Enantiomerenverhältnis selbst nach der weiteren Umsetzung von Ester 5 zu Keton 6 unter basischen Bedingungen erhalten blieb.…”
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