Appeal No. 94-4265
Application 08/035,915
APPENDIX
51. A process for preparing a compound of the formula (IV):
which comprises reacting a compound of the formula (II):
with a compound of the formula (III):
and cyclising the product of this reaction to prepare said compound of the formula (IV);
wherein
1
R represents hydrogen or a hydroxy-protecting group;
R and R may be the same or different and each represents hydrogen, a C -C alkyl group or2 3 1 8
a phenyl group;
-12-
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