East-side modifications

In the present example, the east side modifications concern mainly in changes at the level of the pyridine ring, and the questions that should be answered are the following ones (Figure 19.5) ... 

FIGURE 19.5 East side modifications on the pirenzepine molecule. 

Due to the almost symmetrical structure of pirenzepine, essentially the same kind of modifications can be applied than that suggested for the east side. 

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