共 25 条
First enantioselective total synthesis of (-)-dysibetaine CPa and absolute configurations of natural product
被引:9
|作者:
Sakai, Michihiro
[1
]
Ishikawa, Yuichi
[1
]
Takamizawa, Satoshi
[1
]
Oikawa, Masato
[1
]
机构:
[1] Yokohama City Univ, Kanazawa Ku, Yokohama, Kanagawa 2360027, Japan
关键词:
Cyclopropane;
Dysibetaine CPa;
Enantioselective total synthesis;
Quaternary ammonium group;
Neuroactive natural product;
Organocatalytic solvolysis;
SPONGE DYSIDEA-HERBACEA;
CINCHONA ALKALOIDS;
AMINO-ACID;
ANHYDRIDES;
DYSIHERBAINE;
D O I:
10.1016/j.tetlet.2013.08.113
中图分类号:
O62 [有机化学];
学科分类号:
070303 ;
081704 ;
摘要:
Here we report total synthesis of enantiomerically pure dysibetaine CPa, isolated from Micronesian marine sponge and expected to serve as a neuroactive agent. Starting from meso-cyclopropane triester, the synthesis was achieved in 12.8% overall yield over 10 steps including organocatalytic enantioselective solvolysis of meso-succinic anhydride as a key step. This work established the absolute configurations of the natural product as (3R,4R). (C) 2013 Elsevier Ltd. All rights reserved.
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页码:5911 / 5912
页数:2
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