Organometallic enantiomeric scaffolding. A molybdenum-mediated intramolecular nucleophilic ketalization-demetalation cascade. Total synthesis of (+)-(1R,2S,5S,7R)-2-hydroxy-exo-brevicomin.
Organometallic enantiomeric scaffolding. A molybdenum-mediated intramolecular nucleophilic ketalization-demetalation cascade. Total synthesis of (+)-(1R,2S,5S,7R)-2-hydroxy-exo-brevicomin.
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DOI:
10.1021/ol901523g
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发表时间:
2009-08-20
期刊:
影响因子:
5.2
通讯作者:
Liebeskind LS
中科院分区:
文献类型:
--
作者:
Cheng B;Liebeskind LS
TpMo(CO)2(5-oxo-η3-pyranyl) scaffolds bearing an internal alkoxide undergo a novel intramolecular nucleophilic ketalization reaction. The anionic intermediate is easily demetalated, rapidly providing the 6,8-dioxabicyclo[3.2.1]oct-3-en-2-one framework in moderate to good yields with high enantiopurity. An enantiocontrolled total synthesis of (+)-(1R,2S,5S,7R)-2-hydroxy-exo-brevicomin was accomplished utilizing the reaction sequence.
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