Appeal No. 95-0865
Application 08/08/007,950
Part II "Summary of Action"), which are all of the claims in the
application on appeal. We reverse, but enter new grounds of
rejection pursuant to 37 CFR § 1.196(b) as to Claims 6-9, 11-17,
19-22 and 25. We do not enter new grounds of rejection as to
Claims 10 and 18.
A. Findings of fact
The record supports the following findings by a
preponderance of the evidence.
The invention
1. The invention relates to a process for making
2-amino-6-halo-9-[2,3-disubstituted-cyclobutyl]-purines.
2. The invention also relates to converting the
purines to known antiviral agents, e.g., [1R-(1",2$,3")]-2-amino-
9-[2,3-bis(hydroxymethyl)-cyclobutyl]-1,9-dihydro-6H-purin-6-one.
3. A 9-cyclobutane purine ring has the following
structure and
numbering system:
- 2 -
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