A Substrate-Directed Diastereoselective Synthesis of Vicinal Diamines Using an A3-Coupling Strategy: An Application to the Total Synthesis of (+)- and (-)-Epiquinamides

被引:8
|
作者
Ajay, Sama [1 ]
Saidhareddy, Puli [1 ]
Shaw, Arun K. [1 ]
机构
[1] CSIR, CDRI, Med & Proc Chem Div, Sector 10, Lucknow 226031, UP, India
关键词
A(3) coupling; alkaloids; alpha-amino aldehydes; epiquinamide; total synthesis; ENANTIOSELECTIVE SYNTHESIS; STEREOCONTROLLED SYNTHESIS; NATURAL-PRODUCTS; (+)-EPIQUINAMIDE; AMINES; EPIQUINAMIDE; DERIVATIVES; BETA; ACCESS; PIPERAZIN-2-ONES;
D O I
10.1002/ajoc.201700049
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
A copper-catalyzed highly diastereoselective multicomponent reaction (MCR) of alpha-amino aldehydes, dibenzylamine and various alkynes leading to propargyl syn 1,2-diamines has been established. The methodology has been further supported by the total synthesis of (+)- and (-)-epiquinamides from A(3)-coupled adducts derived from L- and D-pipecolic acids, respectively, in overall yields of 31%.
引用
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页码:503 / 506
页数:4
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