FLAVONOIDS OF DRAGONS BLOOD FROM DRACAENA-CINNABARI

In addition to 7-hydroxy-3-(4-hydroxybenzyl)-8-methoxychroman, 3-(4-hy droxybenzyl)-7,8-methylenedioxychroman, 7-hydroxy-3-(4-hydroxybenzyl)c hroman, (+/-)-7,4'-dihydroxy-3'-methoxyflavan, (2S)-7-hydroxyflavan, 4 ,4'-dihydroxy-2-methoxydihydrochalcone, 4,4'-dihydroxy-2'-methoxychalc one, 7,4'-dihydroxyflavone and (2S)-7-hydroxyflavan-4-one, three new f lavonoids have been isolated from the resin, called 'dragon's blood', of Dracaena cinnabari, the structures of which have been elucidated as 7-hydroxy-3-(3-hydroxy-4-methoxybenzyl)chroman, (2S)7,3'-dihydroxy-4' -methoxyflavan and 4-hydroxy-2-methoxydihydrochalcone.