Phosphodiesterase and Thymidine Phosphorylase-Inhibiting Salirepin Derivatives from Symplocos racemosa - Abbasi, Muhammad Athar; Ahmad, Viqar Uddin; Zubair, Muhammad; Fatima, Naheed; Farooq, Umar; Hussain, Sajjad; Lodhi, Muhammad Arif; Choudhary, M Iqbal (Planta Medica, 2004)