    Sentencé'1: Frank Quattrovie , the former Credit Suisse first Boston.  Rechniology itvestment-ticnking guru: reportedly: pleaded not    ity Tuesday, to" charges of abstruction of justice ‘and witness  tampering    jentence 2: NEW’ YGRK.- (‘Dow Jones ) - Former star investment  banker"Frank Quattrone pleaded not guilty Tuesday to criminal  narges of obstruction of justice and witness tampering