Complex sentence: The Center was renamed in memory of Alan Frank Guttmacher, an Ob/Gyn and former president of Planned Parenthood, and the Guttmacher Institute became an independent, non-profit corporation in 1977 under the direction of Frederick S. Jaffe.
Split into simpler sentences: The Center was renamed in memory of Alan Frank Guttmacher, an Ob/Gyn and former president of Planned Parenthood. The Guttmacher Institute became an independent, non-profit corporation in 1977 under the direction of Frederick S. Jaffe.