| abstract |
(Provision) Providing an inhibitor of protein modification formation, especially a kidney protector, in which vitamin B6 deficiency as a side effect was suppressed.n n n (Solution) Use of a compound of formula (I) or formula (II) as an active ingredient in free or salt form:n n n [Formula I]n n n n n n n n [Formula II]n n n n n n n n [Wherein R1 is a substituted or unsubstituted aromatic ventilator, R2, R3 and R4 are each a hydrogen atom or a monovalent organic group, or R2 and R3 together form a condensed ring, or R3 and R4 together are divalent An organic group, provided that neither R3 nor R4 is a hydrogen atom. |