Betulinic Acid Derivatives That Target gp120 and Inhibit Multiple Genetic Subtypes of Human Immunodeficiency Virus Type 1

Weihong Lai, Li Huang, Phong Ho, Zhijun Li, David Montefiori and Chin- Ho Chen

Antimicrobial Agents and Chemotherapy 52 ( 1 ): 128 - 136 , 2008