Design and Synthesis of Peptidomimetic Factor VIIa Inhibitors

  • Shiraishi Takuya
    Fuji Gotemba Research Laboratories, Chugai Pharmaceutical Co., Ltd.
  • Kadono Shojiro
    Fuji Gotemba Research Laboratories, Chugai Pharmaceutical Co., Ltd.
  • Haramura Masayuki
    Fuji Gotemba Research Laboratories, Chugai Pharmaceutical Co., Ltd.
  • Kodama Hirofumi
    Fuji Gotemba Research Laboratories, Chugai Pharmaceutical Co., Ltd.
  • Ono Yoshiyuki
    Fuji Gotemba Research Laboratories, Chugai Pharmaceutical Co., Ltd.
  • Iikura Hitoshi
    Fuji Gotemba Research Laboratories, Chugai Pharmaceutical Co., Ltd.
  • Esaki Tohru
    Fuji Gotemba Research Laboratories, Chugai Pharmaceutical Co., Ltd.
  • Koga Takaki
    Fuji Gotemba Research Laboratories, Chugai Pharmaceutical Co., Ltd.
  • Hattori Kunihiro
    Fuji Gotemba Research Laboratories, Chugai Pharmaceutical Co., Ltd.
  • Watanabe Yoshiaki
    Fuji Gotemba Research Laboratories, Chugai Pharmaceutical Co., Ltd.
  • Sakamoto Akihisa
    Fuji Gotemba Research Laboratories, Chugai Pharmaceutical Co., Ltd.
  • Yoshihashi Kazutaka
    Fuji Gotemba Research Laboratories, Chugai Pharmaceutical Co., Ltd.
  • Kitazawa Takehisa
    Fuji Gotemba Research Laboratories, Chugai Pharmaceutical Co., Ltd.
  • Esaki Keiko
    Fuji Gotemba Research Laboratories, Chugai Pharmaceutical Co., Ltd.
  • Ohta Masateru
    Fuji Gotemba Research Laboratories, Chugai Pharmaceutical Co., Ltd.
  • Sato Haruhiko
    Fuji Gotemba Research Laboratories, Chugai Pharmaceutical Co., Ltd.
  • Kozono Toshiro
    Fuji Gotemba Research Laboratories, Chugai Pharmaceutical Co., Ltd.

抄録

Selective factor VIIa-tissue factor complex (FVIIa/TF) inhibition is regarded as a promising target for developing new anticoagulant drugs. In previous reports, we described a S3 subsite found in the X-ray crystal structure of compound 2 that bound to FVIIa/soluble tissue factor (sTF). Based on the X-ray crystal structure information and with the aim of improving the inhibition activity for FVIIa/TF and selectivity against other serine proteases, we synthesized derivatives by introducing substituents at position 5 of the indole ring of compound 2. Among them, compound 16 showed high selectivity against other serine proteases. Contrary to our expectations, compound 16 did not occupy the S3-subsite; X-ray structure analysis revealed that compound 16 improved selectivity by forming hydrogen bonds with Gln217, Thr99 and Asn100.

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