BENZOFURAN DERIVATIVE AND ITS PREPARATION
NEW MATERIAL:The compound of formula I (R1 is halogen; R2 is halogen or OH; R3 is lower alkanoyl, benzoyl, lower alkyl, benzyl or group of formula II; n is 2 or 3; the substituted aminopropoxy group is substituted to an arbitrary position in 4, 5, 6 and 7 positions of the benzofuran ring) and its ac...
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