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[摘要]:A new and efficient synthesis of tricyclic pyridoquinonoxalinone 1 an analog of Makaluvamine A and its intermediates 2 and 3 has been developed starting from 5,8-dimethoxy-4,4-dimethyl[1,2,3,4]tetrahydroquinoline 4. The synthesis was accomplished in 11 steps and 4% overall yield from commercially available 2,5-dimethoxyaniline. |
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