Total synthesis of mycalamide A and 7-epi-mycalamide A.
Total synthesis of mycalamide A and 7-epi-mycalamide A.
复制标题
mycalamide A 和 7-epi-mycalamide A 的全合成。
DOI:
10.1021/ol005629l
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发表时间:
2000
期刊:
影响因子:
5.2
通讯作者:
Pfeifer,LA
中科院分区:
文献类型:
--
作者:
Roush,WR;Pfeifer,LA
The final stages of a total synthesis of mycalamide A are described. A key step is the aldol reaction (mismatched) of imide4and aldehyde5which provided a ca. 5:4 mixture of aldols10aand10b, with incorrect C(7) stereochemistry. Elaboration of the10a−10bmixture to mycalamide A required epimerization of C(7) at the stage of β-keto imide11. Alternatively, Swern oxidation of the10a−10b mixture under conditions that minimize C(7) epimerization led to 7-epi-mycalamide A selectively.