Natural product-based design, synthesis and biological evaluation of anthra[2,1-d]thiazole-6,11-dione derivatives from rhein as novel antitumour agents
Two series of novel 2-substituted 5,7-dihydroxyanthra[2,1-d]thiazole-6,11- dione derivatives from natural rhein were designed, synthesized and evaluated for their antitumour activities against human cancer cell lines A549 and HeLa in vitro.
A process for producing a compound represented by the following general formula or its salt: (1) wherein A represents a lower alkylene group; characterized by comprising reacting a single salt of piperazine represented by the following formula: (2) wherein XH represents a salt-forming organic acid or inorganic acid; with a compound represented by the following general formula: (3) wherein A has the same meaning as defined above; and Y represents an acid residue.
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(2010/11/25)
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