A SYNTHESIS OF (+)-PEDERIN - THE METALATED DIHYDROPYRAN APPROACH

被引:26
作者
JAROWICKI, K [1 ]
KOCIENSKI, P [1 ]
MARCZAK, S [1 ]
WILLSON, T [1 ]
机构
[1] UNIV SOUTHAMPTON,DEPT CHEM,SOUTHAMPTON SO9 5NH,HANTS,ENGLAND
关键词
D O I
10.1016/S0040-4039(00)97415-X
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
The addition of a 6-lithio-3,4-dihydro-2H-pyran to a methyl oxamate ester in the preseuce of TMEDA is a key step in the synthesis of a masked 1,2,3-tricarbonyl moiety used to construct the N-(1-alkoxy-1-alkyl)-amide bridge of the potent cytotoxic agent pederin. A Pd(0)-catalysed stannylation of an O-trifluoromethylsulfonyl ketene acetal provides an efficieat synthesis of the 6-(trimethylstannyl)-3,4-dihydro-2H-pyran which transmetallates to the lithium daivative on treatment with n-BuLi. © 1990.
引用
收藏
页码:3433 / 3436
页数:4
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