Affiliation: | From the ‡Cytokine Research Laboratory, Department of Experimental Therapeutics, The University of Texas MD Anderson Cancer Center, Houston, Texas 77030.;the ¶Organic Chemistry Section, National Institute for Interdisciplinary Science and Technology (CSIR), Trivandrum, 695 019 Kerala, India, and ;the §Cancer Institute, University of Mississippi Medical Center, Jackson, Mississippi 39216 |