can be alkyl aryl cycloalkyl alkaryl heteroaryl heterocyclyl heteroarylalkyl heterocyclylalkyl u2014 ch 2 g1 coor 3 u2014 ch 2 m cor 3 or u2014 ch 2 g c u2550 o nr x r y wherein r 3 g m r x r y and g 1 are the same as defined earlier to give a compound of formula iv which can be deprotected to give a compound of formula v which can be reacted with a compound of formula iiia to give a compound of formula vi wherein hal is br cl or i rxy can be alkyl cycloalkyl alkaryl heteroaryl heterocyclyl heteroarylalkyl heterocyclylalkyl which can be deprotected when ryy attached meta to the phenyl ring is benzyl to give a compound of formula vii which can be reacted with a compound of formula viii wherein rff can be alkyl cycloalkyl alkaryl aryl heteroaryl heterocyclyl heteroarylalkyl or heterocyclylalkyl and hal is br cl or i to give a compound of formula ix the compound of formula vii can be reacted with a compound of formula x wherein r 3y can be u2014 ch 2 g1 c u2550 o or 3 u2014 ch 2 m cor 3 alkyl cycloalkyl alkaryl heteroaryl heterocyclyl heteroarylalkyl heterocyclylalkyl or u2014 ch 2 g c u2550 o nr x r y to give a compound of formula xi which can be reacted with a compound of formula xii wherein p is selected from alkyl aralkyl cycloalkyl u2014 c u2550 o oaralkyl u2014 c u2550 o oc ch 3 3 u2014 c u2550 o oc ch 3 2 chbr 2 or c u2550 o oc ch 3 2 ccl 3 to give a compound of formula xiii the deprotection of a compound of formula ia to give a compound of formula ii can.