Preparation of polyfunctional aryl azides from aryl triazenes. A new synthesis of ellipticine, 9-methoxyellipticine, isoellipticine, and 7-carbethoxyisoellipticine

被引:102
|
作者
Liu, Ching-Yuan [1 ]
Knochel, Paul [1 ]
机构
[1] Univ Munich, Dept Chem & Biochem, D-81377 Munich, Germany
来源
JOURNAL OF ORGANIC CHEMISTRY | 2007年 / 72卷 / 19期
关键词
D O I
10.1021/jo070774z
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
[GRAPHICS] The preparation of polyfunctional aryl azides by the reaction of aryl triazenes with NaN3 in the presence of KHSO4 or BF3 center dot OEt2/TFA (trifluoroacetic acid) has been described. A variety of functional groups (halides, esters, ketones, nitriles, aldehydes, and boronic esters) are tolerated under the Lewis acidic conditions. By using this methodology, the potent antitumor agents, ellipticine and 9-methoxyellipticine, have been synthesized. In addition, isoellipticine and a related derivative, 7-carbethoxyisoellipticine, were also prepared.
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页码:7106 / 7115
页数:10
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