Novel pyrano[3,2-b]indole derivatives: synthesis and some properties |
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| Authors: | Masterova N. S. Ryabova S. Yu. Alekseeva L. M. Evstratova M. I. Kiselev S. S. Granik V. G. |
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| Affiliation: | 1.State Research Center of Antibiotics, 3a ul. Nagatinskaya, 117003, Moscow, Russian Federation
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| Abstract: | Acid treatment of β-(3-acetoxyindol-2-yl)-α-cyanoacrylic acid derivatives (ethyl ester and nitrile) with aqueous or gaseous HCl afforded novel 3-substituted 2-oxo-2,5-dihydropyra-no[3,2-b]indoles. 2-Oxo-2,5-dihydropyrano[3,2-b]indole-3-carbonitrile was converted into ethyl 2-oxo-2,5-dihydropyrano[3,2-b]indole-3-carboximidate. |
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