PMID: 20045964

Authors:

Shiraishi T, Kadono S, Haramura M, Kodama H, Ono Y, Iikura H, Esaki T, Koga T, Hattori K, Watanabe Y, Sakamoto A, Yoshihashi K, Kitazawa T, Esaki K, Ohta M, Sato H, Kozono T

Title:

Design and synthesis of peptidomimetic factor VIIa inhibitors.

Journal:

Chem Pharm Bull (Tokyo). 2010 Jan;58(1):38-44.

Abstract:

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.