P3-P4 ureas and reverse carbamates as potent HCV NS3 protease inhibitors: Effective transposition of the P4 hydrogen bond donor.

Abstract:

:A series of tripeptidic acylsulfonamide inhibitors of HCV NS3 protease were prepared that explored structure-activity relationships (SARs) at the P4 position, and their in vitro and in vivo properties were evaluated. Enhanced potency was observed in a series of P4 ureas; however, the PK profiles of these analogues were less than optimal. In an effort to overcome the PK shortcomings, modifications to the P3-P4 junction were made. This included a strategy in which one of the two urea N-H groups was either N-methylated or replaced with an oxygen atom. The former approach provided a series of regioisomeric N-methylated ureas while the latter gave rise to P4 reverse carbamates, both of which retained potent NS3 inhibitory properties while relying upon an alternative H-bond donor topology. Details of the SARs and PK profiles of these analogues are provided.

journal_name

Bioorg Med Chem Lett

authors

Venables BL,Sin N,Wang AX,Sun LQ,Tu Y,Hernandez D,Sheaffer A,Lee M,Dunaj C,Zhai G,Barry D,Friborg J,Yu F,Knipe J,Sandquist J,Falk P,Parker D,Good AC,Rajamani R,McPhee F,Meanwell NA,Scola PM

doi

10.1016/j.bmcl.2018.04.009

subject

Has Abstract

pub_date

2018-06-01 00:00:00

pages

1853-1859

issue

10

eissn

0960-894X

issn

1464-3405

pii

S0960-894X(18)30307-X

journal_volume

28

pub_type

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