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Synthesis of novel 4-(5′-pyrrolidinyl)-β-lactams
被引:45
|作者:
Grigg, R
[1
]
Thornton-Pett, M
[1
]
Xu, J
[1
]
Xu, LH
[1
]
机构:
[1] Univ Leeds, Sch Chem, Mol Innovat Divers & Automated Synth Ctr, Leeds LS2 9JT, W Yorkshire, England
来源:
关键词:
beta-lactams;
azomethine ylide;
cycloaddition;
cascade reaction;
D O I:
10.1016/S0040-4020(99)00867-4
中图分类号:
O62 [有机化学];
学科分类号:
070303 ;
081704 ;
摘要:
The synthesis of novel 4-(5'-pynolidinyl)-beta-lactams from imines derived from 4-formyl-beta-lactams and alpha-amino esters via cascade imine-->azomethine ylide-->1,3-dipolar cycloaddition reactions is described. These cascades are endo-specific, exhibit facial stereoselectivity and occur in good to excellent yields. (C) 1999 Elsevier Science Ltd. Ail rights reserved.
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页码:13841 / 13866
页数:26
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