Compounds of formula (I) in which: Rrepresents a hydrogen atom or a ‑COOR group, R represents a G group or a linear or branched (C-C) alkyl group substituted by a G group, where G represents a ‑(CH)‑A‑(CH)-B-(CRR)-(CH)-R as defined in the description and Rrepresents a hydrogen atom, an alkyl group or an NO group, applicable in the field of hypertension and cardiovascular diseases.