(untitled) - Doherty,A.M.; Sircar,I.; Kornberg,B.E.; Quin,J.; Winters,R.T.; Kaltenbronn,J.S.; Taylor,M.D.; Batley,B.L.; Rapundalo,S.R.; Ryan,M.J.; Painchaud,C.A. (J. Med. Chem., 1992)