0000941655-00-000028 SC 13G 2 20000815 JOSHUA RUCH RHO MANAGEMENT CO INC RHO MANAGEMENT TRUST II RHO MANAGEMENT TRUST IV 3 DIMENSIONAL PHARMACEUTICALS INC 0000914201 2834 232716487 DE 1231 SC 13G 34 005-59449 703555 665 STOCKTON DRIVE SUITE 104 EXTON PA 19341 6104588959 665 STOCKTON DRIVE SUITE 104 EXTON PA 19341 RHO MANAGEMENT CO INC 0001020455 133087622 NY 1231 SC 13G 152 WEST 57TH STREET 23RD FLOOR NEW YORK NY 10019 2127516677 152 WEST 57TH STREET 23RD FLOOR NEW YORK NY 10019 SC 13G 1 0001.txt SCHEDULE 13G EX-99 2 0002.txt EXHIBIT A - JOINT FILING AGREEMENT