Total synthesis, structure revision, and absolute configuration of (+)-yatakemycin

被引:82
作者
Tichenor, MS
Kastrinsky, DB
Boger, DL
机构
[1] Scripps Res Inst, Dept Chem, La Jolla, CA 92037 USA
[2] Scripps Res Inst, Skaggs Inst Chem Biol, La Jolla, CA 92037 USA
关键词
D O I
10.1021/ja0472735
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The total synthesis of the reported structure 2 for yatakemycin, an exceptionally potent, naturally occurring antitumor agent disclosed in 2003, and its lack of correlation with the natural product are detailed. On the basis of spectroscopic distinctions between 2 and yatakemycin, the natural product structure was reformulated as 3, now bearing a thiomethyl ester versus thioacetate in the left-hand subunit. Total synthesis of 3 provided a compound nearly identical to but still subtly distinct from the natural product. A second reformulation of the yatakemycin structure as 1, incorporating the alternatively substituted right-hand subunit as well as the initial thiomethyl ester reformulation, was confirmed by total synthesis of both (+)- and ent-(-)-1 in studies that also unambiguously established the absolute configuration of the natural product. Copyright © 2004 American Chemical Society.
引用
收藏
页码:8396 / 8398
页数:3
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