Appeal No. 94-3007
Application 07/809,039
\ /
C=O .
The old A-21978C cyclic peptides from which the A-21978C
cyclic peptide derivatives Debono claims were derived include
the following fragment as part of their cyclic peptide rings:
\
C=O
/
HN
\
CH
/ \
O=C CH2
/ \
- NH CH - NH C=O
2
\ / /
C=O HO .
On the other hand, the new A-21978C cyclic peptide
derivatives defined by appellants’ Claim 30 appear not only to
be anhydrides of the old A-21978C cyclic peptides Debono
describes but, taking into consideration stereoisomerism,
appear also to be anhydrides of the cyclic peptide compounds
defined by appellants’ Claim 31. The compounds of Claim 30
have the following fragment as part of their cyclic peptide
- 4 -
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