共 82 条
Recent advances in the synthesis of angucyclines
被引:73
作者:
Carreño, MC
[1
]
Urbano, A
[1
]
机构:
[1] Univ Autonoma Madrid, Dept Quim Organ, E-28049 Madrid, Spain
来源:
关键词:
D O I:
10.1055/s-2004-834813
中图分类号:
O62 [有机化学];
学科分类号:
070303 ;
081704 ;
摘要:
The different strategies recently reported to construct the tetracyclic skeleton of angucyclines are presented: Diels-Alder and Friedel-Crafts reactions, nucleophilic additions, free radical annulations, rearrangements of cyclobutenones and cobalt-mediated [2+2+2] cycloadditions. Among the asymmetric approaches, the most efficient corresponds to Diels-Alder reactions including the use of chiral catalysts, enantiopure vinyl cyclohexenes as dienes, synthesized from quinic acid or (S,S)-[(p-tolylsulfinyl)methyl]-p-quinol, and chiral dienophiles such as (S,S)-2-(p-tolylsulfinyl)-1,4-naphthoquinones. 1 Introduction 2 Diels-Alder Reactions 2.1 Formation of B Ring: DC+A Strategy 2.2 Formation of C Ring: D+BA Strategy 2.3 Formation of D Ring from a Dienophile Bearing the CBA Moiety 3 Friedel-Crafts Reactions 4 Nucleophilic Additions 4.1 Anionic Annulations with Phthalides 4.2 Other Anionic Annulations 5 Free Radical Annulations 6 Rearrangements of Cyclobutenones 7 Cobalt-Mediated [2+2+2] Cycloadditions 8 Summary.
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页码:1 / 25
页数:25
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