Tetrahedron letters

Aryl radical-induced cyclization routes to furo [2, 3-b] benzofurans. Abbreviated formal syntheses of aflatoxins B 1 and B 2

CP Sloan, JC Cuevas, C Quesnelle, V Snieckuss

Index: Sloan, C. P.; Cuevas, J. C.; Quesnelle, C.; Snieckus, V. Tetrahedron Letters, 1988 , vol. 29, # 37 p. 4685 - 4686

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Citation Number: 51

Abstract

Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... Radical-induced cyclization of butenolide ethers 3a-c affords furobenzofurans 4a-c; deprotection of 4c gives 4d, thus concluding formal total syntheses of aflatoxins B 1 (5) and B 2 (6). ... -BuLi/TMEDA/Et 2 O/−78°C; I 2 ; TFA/CH 2 Cl 2 /RT (40%); c) ...