Renin Inhibitors. III. Synthesis and Structure-Activity Relationships of Transition-State Inhibitors Containing Dihydroxyethylene Isostere at the P_1-P_<1'> Site

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The design, synthesis and structure-activity relationships of transition-state inhibitors containing the dihydroxyethylene isostere at the scissile site are described. The compounds with (2S, 3R, 4S)-4-amino-5-cyclohexyl-1-morpholino-2,3-pentanediol at the P_1-P_<1'> site are potent renin inhibitors. (2S, 3R, 4S)-4-[N-[(2S)-3-Ethylsulfonyl-2-(1-naphthylmethyl)propionyl]-L-norleucyl]amino-5-cyclohexyl-1-morpholino-2,3-pentanediol (2) (BW-175), which is the most potent inhibitor (IC_<50> : 3.3 nM against human renin) in this series, poorly inhibits cathepsin D (IC_<50> : 26000 nM) and pepsin (IC_<50> : >100000 nM), and thus it is specific for renin. Compound 2 contains only one amino acid and showed an oral bioavailability of 2.8% at 10 mg/kg and 9.7% at 30 mg/kg in rats. The interaction between renin and inhibitor 2 is discussed on the basis of molecular modeling studies.
公益社団法人日本薬学会の論文
1994-02-15