Catalytic enantioselective approach to the eudesmane sesquiterpenoids: total synthesis of (+)-carissone.

Catalytic enantioselective approach to the eudesmane sesquiterpenoids: total synthesis of (+)-carissone.
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DOI:
10.1021/ol802409h
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发表时间:
2009-01-15
期刊:
影响因子:
5.2
通讯作者:
Stoltz BM
Stoltz BM
中科院分区:
化学1区
文献类型:
--
作者:
Levine SR;Krout MR;Stoltz BM

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报道了桉烷型倍半萜的催化对映选择性合成方法。钯催化的乙烯基酯底物的对映选择性烷基化的策略性使用锻造了C(10)全碳季铵中心。该关键转化使得非对映选择性烯烃氢化能够在C(7)处产生顺式立体化学。设计的合成策略允许制备抗菌剂(+)-carissone和正式合成P/Q型钙通道阻滞剂(-)-α-桉叶醇。
A catalytic enantioselective approach to the eudesmane sesquiterpenoids is reported. The strategic use of a palladium-catalyzed enantioselective alkylation of vinylogous ester substrates forged the C(10) all-carbon quaternary center. This key transformation enabled a diastereoselective olefin hydrogenation to create the syn stereochemistry at C(7). The devised synthetic strategy allowed for the preparation of the antibacterial agent (+)-carissone and a formal synthesis of the P/Q-type calcium channel blocker (–)-α-eudesmol.
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