SGPにEndo M N175Qを作用させてGlcNAc tagへ糖鎖を転移させた後9,10、NHSエステル化し、ANP(1)と反応させてSG-ANP(3)を得た(図 1)。調製したSG-ANP(3)はラットにて強い薬理効果(グアニル酸シクラーゼA活性化)とネプリライシン(NEP)に対する代謝耐性を示した。
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