The names of two Yale professors appear on a 162-page list of investor Bernie Madoff’s clients released last week. The list — part of ongoing investigations surrounding Madoff’s alleged “Ponzi scheme,” which is said to have swindled investors of $50 billion — identifies Sidney Altman, Sterling professor of molecular, cellular and developmental biology, and Rhea Paul, lecturer in the Edward Zigler Center of the Child Study Center at the Yale School of Medicine, as clients of Madoff. Reached by phone Friday, Altman declined to comment. Paul could not be reached for comment over the weekend.