Title: Sham HL, et, al. Synthesis and antiviral activities of the major metabolites of the HIV protease inhibitor ABT-378 (Lopinavir). Bioorg Med Chem Lett. 2001 Jun 4; 11(11): 1351-3.
Title: Kumar GN, et, al. Potent inhibition of the cytochrome P-450 3A-mediated human liver microsomal metabolism of a novel HIV protease inhibitor by ritonavir: A positive drug-drug interaction. Drug Metab Dispos. 1999 Aug; 27(8): 902-8.