University Distinguished Professor
B.A., Cambridge University, 1960
Ph.D., Cambridge University, 1963
Research Fellow, Queens' College, Cambridge, 1962-1966
Research Associate and Fulbright Grantee, Massachusetts Institute of Technology, 1963-1964
NATO Fellow, Cambridge University, 1964-1966
Assistant Professor, State University of New York at Albany, 1966-1971
Associate Professor, Virginia Polytechnic Institute and State University, 1971-1977
Professor of Chemistry, Virginia Polytechnic Institute and State University, 1977-1999
University Distinguished Professor, Virginia Polytechnic Institute and State University, 1999-present
Associate Editor, Journal of Natural Products, 1983-1998
President, American Society of Pharmacognosy, 1988-1989
Research Achievement Awardee, American Society of Pharmacognosy, 1999
Gene Wise Awardee, ACS Blue Ridge Section, 1999
Elder, Blacksburg Christian Fellowship
Virginia Scientist of the Year, 2002