... M. Us- kokovic and JF Blount at Hofmann-La Roche, Inc., Nutley, NJ, as well as Drs. ... Department of Chemistry, Howard University Washington, DC 20059 Received July 20, 1981 ... 1807-1 8 10. 0002-7863/81/1503-6251$01.25/0 0 1981 American Chemical Society Page 2. ...