Appeal No. 94-4265
Application 08/035,915
20
represents any of the groups defined for R or methoxy, ethoxy or propoxy; groups
20
of formula ) OSO R ; cyano; nitro; and azido groups;
2
R represents hydrogen, or a carboxy-protecting group;5
R represents an alkoxy group having from 1 to 6 carbon atoms, or a phenoxy group selected6
from the group consisting of phenoxy, p-methylphenoxy, p-methoxyphenoxy groups, and a dialkyl-
amino group wherein each alkyl group has from 1 to 6 carbon atoms, or two R groups together6
6 6
represent an o-phenylenedioxy group, and the other R represents any other R group, or the three
6
R groups together represent a group of the formula CH ) (CH ) 0) ) .
3 2 3
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Last modified: November 3, 2007