Total Synthesis of (-)-Lasonolide A.
Total Synthesis of (-)-Lasonolide A.
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DOI:
10.1021/jacs.6b05127
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发表时间:
2016-09-14
影响因子:
15
通讯作者:
Kalkofen R
中科院分区:
文献类型:
--
作者:
Trost BM;Stivala CE;Fandrick DR;Hull KL;Huang A;Poock C;Kalkofen R
The lasonolides are novel polyketides that have displayed remarkable biological activity in vitro against a variety of cancer cell lines. Herein we describe our first generation approach to the formal synthesis of lasonolide A. The key findings from these studies ultimately allowed us to go on and complete a total synthesis of lasonolide A. The convergent approach unites two highly complex fragments utilizing a Ru-catalyzed alkene-alkyne coupling. This type of coupling typically generates branched products, however through a detailed investigation we are now able to demonstrate that subtle structural changes to the substrates can alter the selectivity to favor the formation of the linear product. The synthesis of the fragments features a number of atom economical transformations which are highlighted by the discovery of an engineered enzyme to perform a dynamic kinetic reduction of a β-ketoester to establish the absolute stereochemistry of the southern tetrahydropyran ring with high levels of enantioselectivity.
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影响因子:
15
作者:
Araoz, Romulo;Servent, Denis;Molgo, Jordi;Iorga, Bogdan I.;Fruchart-Gaillard, Carole;Benoit, Evelyne;Gu, Zhenhua;Stivala, Craig;Zakarian, Armen
通讯作者:
Zakarian, Armen
影响因子:
5.2
作者:
Ghosh, Arun K.;Gong, Gangli
通讯作者:
Gong, Gangli
影响因子:
1.8
作者:
Gurjar, MK;Chakrabarti, A;Kumar, P
通讯作者:
Kumar, P
DOI:
10.1039/p19890001281
发表时间:
1989-07-01
期刊:
JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 1
影响因子:
--
作者:
ALLEVI, P;CIUFFREDA, P;MANITTO, P
通讯作者:
MANITTO, P
影响因子:
--
作者:
Everaere, K;Carpentier, JF;Bulliard, M
通讯作者:
Bulliard, M