After snapping up the troubled Indian generics maker Ranbaxy Laboratories in an all-stock deal last year, Sun Pharma has sent 18 top executives at its former rival packing, including Ranbaxy President and CFO Indrajit Banerjee and VP of marketing Maninder Singh, sources told The Economic Times. According to the Indian newspaper, most of the managers who were asked to leave had been brought in after Daiichi Sankyo bought Ranbaxy in 2008. Story