New oxidative tools for the functionalization of the cephalostatin north 1 hemisphere.
New oxidative tools for the functionalization of the cephalostatin north 1 hemisphere.
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用于头孢他汀北 1 半球功能化的新氧化工具。
DOI:
10.1021/ol034551g
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发表时间:
2003
期刊:
影响因子:
5.2
通讯作者:
Fuchs,PhilipL
中科院分区:
文献类型:
--
作者:
Lee,JongSeok;Fuchs,PhilipL
Dimethyldioxirane (DMDO) C−H oxidation of ketone17to hemiketal 18 (82%), bis-dehydration to vinyl ether21(77%), and DMDO again provides C-23 axial alcohol23(99%). Routine processing, including a double-stereoselective Sharpless AD reaction (de >98%), gives alcohols7and32. C-23 deoxy substrate7undergoes Suarez hypoiodite oxidative cyclization to (natural) β spiroketal34, but compound32, bearing a C-23 silyl ether, generates unnatural spiroketal33.
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影响因子:
1.8
作者:
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通讯作者:
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影响因子:
15
作者:
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通讯作者:
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影响因子:
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作者:
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影响因子:
5.2
作者:
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