* Campbell Soup Co. said it will take a fiscal third-quarter pretax charge of $253 million as it cuts costs, sells assets and spins off Vlasic Foods International. The company said it will sell off assets in 1998 that generate about $170 million in annual sales.
* Continental Airlines Inc. and Brazilian carrier Viacao Aerea Sao Paulo agreed to share passengers on flights between the U.S. and Brazil, challenging the dominance of AMR Corp.'s American Airlines in the region. The pact requires government approvals.
* Mesa Air Group Inc. named Jonathan Ornstein, chief executive of European carrier Virgin Express, to succeed founder Larry Risley as chief executive on May 1. Ornstein leads an investment group that acquired 5.33% of the regional airline's stock in early January.
* Pharmacia & Upjohn Inc. won Food and Drug Administration approval for Detrol, its drug to treat bladder control problems. Analysts said sales of the drug could top $500 million a year.