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Rolf Huisgen 《Angewandte Chemie (International ed. in English)》2011,50(25):5609-5610
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Charles Fehr Dr. Oliver Knopff Dr. Jean‐Yves de Saint Laumer Dr. 《Chemistry (Weinheim an der Bergstrasse, Germany)》2010,16(8):2487-2495
(+)‐(R,Z)‐5‐Muscenone ((R)‐ 1 ) was synthesized by an enantioselective aldol reaction, catalyzed by new ephedrine‐type Ti reagents (up to 70 % enantiomeric excess). Substrate‐directed diastereoselective reduction of the aldol product and Grob fragmentation of the tosylate of the resultant 1,3‐diol afforded (+)‐ 1 . This approach also gave access to (?)‐(R,E)‐5‐muscenone and (?)‐(R)‐muscone. 相似文献
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