BRIEF-Sara Lee announces cash tender offer for up to $470 million of three series of its outstanding debt securities March 6 (Reuters) - Sara Lee Corp : 06:23 PM 03/06/12 * Announces cash tender offer for up to $470 million of three series of its outstanding debt securities * Tender offer will expire at the end of April 2, 2012 ((Bangalore Equities Newsroom; +91 80 4135 5800; within U.S. +1 646 223 8780)) Thomson Reuters