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 Process for the synthesis of oligomeric compounds
What is claimed is: 1. A compound having the formula: ##STR38## wherein: X.sub.4 is Z or H; Z is CN,...


 Processes for the synthesis of oligomeric compounds
OF PREFERRED EMBODIMENTS The present invention provides methods for the preparation of oligomeric ...


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 Hepatitis C virus inhibitors

Details
Inventors: Scola, Paul Michael; Campbell, Jeffrey Allen; Sin, Ny; Sun, Li-Qiang; Wang, Xiangdong Alan;
Assignee: Bristol-Myers Squibb Company (Princeton, NJ)
Primary Examiner: Campell; Bruce R.
Assistant Examiner: Heard; Thomas S.
Attorney, Agent or Firm: Mingo; Pamela A. Volles; Warren K.

Hepatitis C virus inhibitors are disclosed having the general formula: ##STR00001## wherein A, R.sub.2, R.sub.3, R', B and Y are described in the description. Compositions comprising the compounds and methods for using the compounds to inhibit HCV are also disclosed.

DETAILED DESCRIPTION OF THE INVENTION Stereochemical definitions and conventions used herein generally follow McGraw-Hill Dictionary of Chemical Terms, S.
P.
Parker, Ed.
, McGraw-Hill Book Company, New York (1984) and Stereochemistry of Organic Compounds, Eliel, E.
and Wilen, S.
, John Wiley & Sons, Inc.
, New York (1994).
Many organic compounds exist in optically active forms, i.
e.
, they have the ability to rotate the plane of plane-polarized light.
In describing an optically active compound, the prefixes D and L or R and S are used to denote the absolute configuration of the molecule about its chiral center(s).
The prefixes d and 1 or (+) and (-) are employed to designate the sign of rotation of plane-polarized light by the compound, with (-) or 1 meaning that the compound is levorotatory and (+) or d, meaning the compound, is dextrorotatory.
For a given chemical structure, these compounds, called stereoisomers, are identical except that they are mirror images of one another.
A specific stereoisomer of a mirror image pair may also be referred to as an enantiomer, and a mixture of such isomers is often called an enantiomeric mixture.
With reference to the instances where (R) or (S) is used, it is to designate the absolute configuration of a substituent in context to the whole compound and not in context to the substituent alone.
Unless otherwise specifically noted herein, the terms set forth below will have the following definitions.
The terms "racemic mixture" and "racemate" refer to an equimolar mixture of two enantiomeric species, devoid of optical activity.
The term "chiral" refers to molecules which have the property of non-superimposability of the mirror image partner, while the term "achiral" refers to molecules which are superimposable on their mirror image partner.
The term "stereoisomers" refers to compounds which have identical chemical composition, but differ with regard to the arrangement of the atoms or groups in space.
The term "diastereomer" refers to a stereoisomer which is not an enantiomer, e



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