Appeal No. 1997-1875
Application No. 08/451,378
, C -C alkylene
4 12
which
is
interr
upted
by -O-
,-S-,
or -
NR -, is a group of
4
R is hydrogen, C -C alkyl, phenyl-C -C alkyl, phenyl or C -C4 1 18 1 4 1 6
alkyl-substituted phenyl,
R is hydrogen or methyl, and
5
b is an integer from 4 to 6.
14
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