N,N'-di(Aralkyl)N,N'-di(carboxyalkyl)alkylenediamine derivatives, N-(Aralkyl)N'-(carboxyalkyl)N,N'-di(carboxyalkyl)alkylenediamine derivatives and N,N'-di(Aralkyl)N,N',N'-tri(carboxyalkyl)dialkylentriamine derivatives and their use in pharmacy and cosmetics

摘要

N,N'-di(aralkyl)- or N-(aralkyl)-N'-(carboxyalkyl)- N,N'- di-(carboxyalkyl) alkylene di- and triamine derivs. of formula (I) and their salts and metal complexes are new. In (I), n = 0-2; m, p = 1-3; R and R1-R4 = H or 1-4C alkyl; or R1+R2, R2+R3 = a 5- or 6-membered ring; X = COOR4 or gp. of formula (i) or (ii; p = 1 ); Z1-Z3 = H, 1-4C alkyl, OR5 or NR5R'5; R5, R'5 = H or 1-4C alkyl; with proviso that when n = 0, m = 1 and X = -COOR4 or gp. (ii) then at least one of R, R1 and R2 is other than H.