8-allyl-7-hydroxy-4-methylcoumarin 、 甲醇 以##STR32## and from 4,5-dimethyl-7-hydroxy-8-allylcoumarin (XIV) the 4,5-dimethylangelicin (XXX; m.p. 211°-2° (MeOH)) was obtained的产率得到4,5-dimethyl-7-hydroxy-8-allylcoumarin
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Furocoumarin for the photochemotherapy of psoriasis and related skin