UREIDO DERIVATIVES OF NAPHTHALENEPHOSPHONIC ACIDS AND PROCESS FOR THEIR PREPARATION

摘要

PCT No. PCT/EP95/00444 Sec. 371 Date Oct. 30, 1995 Sec. 102(e) Date Oct. 30, 1995 PCT Filed Feb. 8, 1995 PCT Pub. No. WO95/23806 PCT Pub. Date Sep. 8, 1995Subject of the present invention are new ureido derivatives of naphthalenephosphonic acids having the following formula (I) (I) wherein each of m and n, which are the same, is an integer of 1 to 4; each of p and q, which are the same, is an integer of 1 to 3; and each of the R groups, which are the same, is a free or esterified phosphonic acid group; and the pharmaceutically acceptable salts thereof.