BENZOFURANDERIVATE UND DIESE ENTHALTENDE THERAPEUTISCHE MITTEL.

摘要

5-Substd.-4,7-dihydroxy -6-aminoalkoxy-benzofuran derivs. of formula (I) are new. In (I), R1, R2 = H, 1-4C alkyl or phenyl-1-4C alkyl; R3, R4 = H or 1-4C alkyl; or R3 + R4 = 3-5 membered chain opt. interrupted by O or NR1, X = (a)-CO-CH=CH-, (b)-COCH2CH2- or (c)-CH(OH)CH2CH2-; n = 2 or 3; Het = aromatic 5- or 6-membered ring contg. an N, O or S heteroatom and opt. an additional N atom, opt. substd. by 1-4C alkyl, F, Cl, Br, NH2 or NR1R2.