Synthesis of [1]benzopyrano[2,3,4-kl]acridin-3-ol and its analogues as pentacyclic compounds |
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Authors: | Fujiwara H Kitagawa K |
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Affiliation: | Niigata College of Pharmacy, Japan. fujiwara@niigata-pharm.ac.jp |
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Abstract: | A new heterocyclic compound, [1]benzopyrano[2,3,4-kl]acridin-3-ol was synthesized by cyclization of xanthone derivatives. The key compound, 1-(3'-methoxyanilino)-xanthone, was prepared from 1-aminoxanthone. [1]benzopyrano[2,3,4-kl]acridin-3-ol analogues, [1]benzothiopyrano[2,3,4-kl]acridin-3-ol, pyrido[3',2':5,6]pyrano[2,3,4-kl]acridin-3-ol and pyrido[3',2':5,6]thiopyrano[2,3,4-kl]acridin-3-ol were synthesized by the same method. |
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