Formal [4+2]-annulation of chiral crotylsilanes: synthesis of the C19-C28 fragment of phorboxazoles.
Formal [4+2]-annulation of chiral crotylsilanes: synthesis of the C19-C28 fragment of phorboxazoles.
复制标题
手性巴豆基硅烷的正式 [4 2]-环化:佛波唑 C19-C28 片段的合成。
DOI:
10.1021/ol015893u
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发表时间:
2001
期刊:
影响因子:
5.2
通讯作者:
Panek,JS
中科院分区:
文献类型:
--
作者:
Huang,H;Panek,JS
A stereoselective synthesis of the C19−C28 fragment of phoborxazole A and B is described. The key step is an enantioselective [4 + 2]-annulation of a crotylsilane10with a propargylic aldehyde11affording a functionalized dihydropyran12. A solvent-dependent stereoselective epoxidation of dihydropyrans is also documented.