Hi About yr Question on Chemistry ...
U dont 've to do all structures just do basic for each group. e.g: Benzodiazepins, Barbiturates etc
yes there is Med Chem but its all abt basic just u know form yr 1st bpharm and 12 sci.
calculation is nominal but u should know basic form Manon Shroff book thts enough.... and elasticity n np n all its all in Manon S cal book its online too