[2]. Guay D, et al. Discovery of L-791,943: a potent, selective, non emetic and orally active phosphodiesterase-4 inhibitor. Bioorg Med Chem Lett. 2002 Jun 3;12(11):1457-61.
[1]. Richard Frenette, et al. Substituted 4-(2,2-diphenylethyl)pyridine-N-oxides as phosphodiesterase-4 inhibitors: SAR study directed toward the improvement of pharmacokinetic parameters. Bioorg Med Chem Lett. 2002 Oct 21;12(20):3009-13.
[1]. Richard Frenette, et al. Substituted 4-(2,2-diphenylethyl)pyridine-N-oxides as phosphodiesterase-4 inhibitors: SAR study directed toward the improvement of pharmacokinetic parameters. Bioorg Med Chem Lett. 2002 Oct 21;12(20):3009-13.
[2]. Guay D, et al. Discovery of L-791,943: a potent, selective, non emetic and orally active phosphodiesterase-4 inhibitor. Bioorg Med Chem Lett. 2002 Jun 3;12(11):1457-61.