Concise Asymmetric Construction of C2-Symmetric 1,9-Diarylnonanoids Using Hypervalent Silicon Complex: Total Synthesis of (-)-Ericanone
Concise Asymmetric Construction of C2-Symmetric 1,9-Diarylnonanoids Using Hypervalent Silicon Complex: Total Synthesis of (-)-Ericanone
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使用高价硅络合物简明不对称构建 C2 对称 1,9-二芳基壬烷: (-)-Ericanone 的全合成
DOI:
10.1002/asia.201501080
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发表时间:
2016
期刊:
影响因子:
--
通讯作者:
M.
中科院分区:
文献类型:
--
作者:
Kotani;S.; Kai;K.; Shimoda;Y.; Hu;H.; Gao;S.; Sugiura;M.; Ogasawara;M.; Nakajima;M.
By using a phosphine oxide‐catalyzed enantioselective double aldol reaction, we achieved the concise construction ofC2‐symmetric 1,9‐diarylnonanoids, enabling the synthesis of (−)‐ericanone fromp‐hydroxybenzaldehyde in 6 steps with 65 % overall yield. The enantioselective double aldol reaction is useful for establishingC2‐symmetric 1,9‐diaryl‐3,7‐dihydroxy‐5‐nonanones with a single operation. Furthermore, the use ofo‐nosyl‐protectedp‐hydroxybenzaldehyde and a 4,4′‐disubstituted BINAP dioxide catalyst dramatically improved the reactivity and selectivity in the double aldol reaction, enabling the total synthesis of (−)‐ericanone with high yield and with excellent enantiopurity.