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1,3-Dipolar cycloaddition of a cyclic nitrone derived from 2-deoxy-D-ribose to α,β-unsaturated lactones: An entry to carbapenem antibiotics
被引:3
|作者:
Pieczykolan, Michal
[1
]
Staszewska-Krajewska, Olga
[1
]
Furman, Bartlomiej
[1
]
Chmielewski, Marek
[1
]
机构:
[1] Polish Acad Sci, Inst Organ Chem, Kasprzaka 44-52, PL-01224 Warsaw, Poland
关键词:
beta-Lactams;
1,3-Dipolar cycloaddition;
Nitrones;
gamma- and delta-unsaturated lactones;
DOUBLE ASYMMETRIC INDUCTION;
3,4,5,6-TETRAHYDROPYRIDINE 1-OXIDE;
ASSIGNMENT;
DFT;
D O I:
10.1016/j.carres.2016.07.002
中图分类号:
Q5 [生物化学];
Q7 [分子生物学];
学科分类号:
071010 ;
081704 ;
摘要:
1,3-Dipolar cycloadditions of 2-deoxy-D-ribose-derived L-threo five-membered cyclic nitrone to alpha,beta-unsaturated gamma- and delta-lactones were investigated. Cycloadducts obtained from d-lactones, after N-O bond cleavage, opening of the lactone ring, and protection of hydroxyl groups were subjected to beta-lactam ring formation by using Mukaiyama's salt. Cycloadducts from gamma-lactones subjected to the same reaction sequence undergo beta-elimination of a water molecule to provide pyrrolidine-substituted unsaturated gamma-lactones. (C) 2016 Elsevier Ltd. All rights reserved.
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页码:89 / 96
页数:8
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