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Enantioselective Organocatalytic Construction of Hexahydropyrroloindole by Means of -Alkylation of Aldehydes Leading to the Total Synthesis of (+)-Gliocladin C
被引:123
作者:
Song, Jin
[1
,2
]
Guo, Chang
[1
,2
]
Adele, Arafate
[1
,2
]
Yin, Hao
[1
,2
]
Gong, Liu-Zhu
[1
,2
]
机构:
[1] Univ Sci & Technol China, Microscale Joint Lab Green Synthet Chem, Hefei Natl Lab Phys Sci, Hefei 230026, Peoples R China
[2] Univ Sci & Technol China, Dept Chem, Hefei 230026, Peoples R China
关键词:
alkaloids;
amines;
asymmetric catalysis;
phosphoric acid;
total synthesis;
CONCISE TOTAL-SYNTHESIS;
STEREOSELECTIVE ALPHA-ALKYLATION;
ALPHA;
BETA-UNSATURATED KETONES;
CYCLOTRYPTAMINE ALKALOIDS;
MICHAEL ADDITION;
GENERAL-APPROACH;
PHOSPHORIC-ACID;
CATALYSIS;
DERIVATIVES;
EFFICIENT;
D O I:
10.1002/chem.201204522
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
12-Step program: The combined use of cinchona alkaloid based amine and chiral phosphoric acid enabled the asymmetric alkylation reaction of 3-hydroxyoxindoles with aldehydes to give 3,3′-disubstituted oxindoles in excellent enantioselectivities, which allows for the enantioselective total synthesis of (+)-gliocladin C in 12 steps from 3-hydroxyoxindole with 19 % overall yield (see scheme; PMB=para-methoxybenzyl). Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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页码:3319 / 3323
页数:5
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