Synthesis of neoflavonoids: 4-(4-methoxyphenyl)-3,4-dihydrocoumarins
The neoflavonoids 7-hydroxy-5-methyl-4-(4-methoxyphenyl)-3,4-dihydrocumarin (1), 5-hydroxy-7-methyl-4-(4-methoxyphenyl)-3,4-dihydrocoumarin (2), 5-methyl-7-O-coumaroyl-4-(4-methoxyphenyl)-3,4-dihydrocoumarin (3), 5-hydroxy-4-(4-methoxyphenyl)-a-pirano-(6",5":7,8)-3,4-dihydrocoumarin (7), and 7-pentadecyl-4-(4-methoxyphenyl)-3,4- dihydrocoumarin (8) were synthesized via the AlCl3-catalyzed condensation of 4-methoxycinnamic acid chloride with orcinol, 5,7-dihydroxycoumarin and hydrogenated cardanol. The compounds were characterized on the basis of their ¹H- and 13C-NMR spectroscopic properties, including nOe difference spectroscopy.
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| Main Authors: | , , , |
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| Format: | Digital revista |
| Language: | English |
| Published: |
Sociedade Brasileira de Química
1997
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| Online Access: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50531997000300008 |
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