1,3-Dipolar cycloaddition route to novel isoxazole-type derivatives related to combretastatin A-4
摘要:
A series of compounds related to combretastatin A-4, containing a five-membered heterocyclic ring interposed between the two phenyl groups have been Prepared. Synthetic approach involves 1,3-dipolar cycloaddition of various 3,4,5-trimethoxyphenyl units with an in situ generated nitrile oxide from a suitable aldoxime using sodium hypochlorite. Depending oil the nature of the dipolarophile, 3,5-diarylisoxazole derivatives obtained along with the 3,4-regioisomeric isomers. (C) 2004 Elsevier Ltd. All rights reserved.
ISOXAZOLE/ISOXAZOLINE/COMBRETASTATIN LINKED DIHYDROQUINAZOLINONE HYBRIDS AS POTENTIAL ANTICANCER AGENTS AND PROCESS FOR THE PREPARATION THEREOF
申请人:Kamal Ahmed
公开号:US20120283439A1
公开(公告)日:2012-11-08
The present invention provides a compound of general formulae 3a-i to 6a-i, 7a-i to 10a-i, 12a-i to 15a-i, 16a-i to 19a-i, 21a-i to 24a-i, 25a-i to 28a-i, 30a-i to 33a-i, 34a-i to 37a-i and 39a-i to 42a-i, 43a-i to 46a-i useful as potential antitumour agents against human cancer cell lines and a process for the preparation thereof.
A series of compounds related to combretastatin A-4, containing a five-membered heterocyclic ring interposed between the two phenyl groups have been Prepared. Synthetic approach involves 1,3-dipolar cycloaddition of various 3,4,5-trimethoxyphenyl units with an in situ generated nitrile oxide from a suitable aldoxime using sodium hypochlorite. Depending oil the nature of the dipolarophile, 3,5-diarylisoxazole derivatives obtained along with the 3,4-regioisomeric isomers. (C) 2004 Elsevier Ltd. All rights reserved.