A direct synthesis of racemic demethoxyaflatoxin B2
摘要:
Aflatoxin analogue 19 was prepared by a direct sequence involving a novel silver-mediated cyclization to 12, the Michael addition of 16 with 17, and the oxidation of the Michael addition adduct. The overall yield of this six-step route is approximately 11%. The pathway is a flexible one that will permit the synthesis of analogues for toxicological analysis.
A direct synthesis of racemic demethoxyaflatoxin B2
作者:George A. Kraus、Beth E. Johnston、Jacqueline M. Applegate
DOI:10.1021/jo00019a042
日期:1991.9
Aflatoxin analogue 19 was prepared by a direct sequence involving a novel silver-mediated cyclization to 12, the Michael addition of 16 with 17, and the oxidation of the Michael addition adduct. The overall yield of this six-step route is approximately 11%. The pathway is a flexible one that will permit the synthesis of analogues for toxicological analysis.
Formal total synthesis of (±)-aflatoxin B2 utilizing the rhodium carbenoid dipolar cycloaddition
作者:Michael C. Pirrung、Yong Rok Lee
DOI:10.1016/0040-4039(96)00412-1
日期:1996.4
A formaltotalsynthesis of (±)-aflatoxinB2 has been completed using as the key step the rhodium-mediated dipolarcycloaddition of a cyclic rhodiumcarbenoid to dihydrofuran.