New non-toxic semi-synthetic derivatives from natural diterpenes displaying anti-tuberculosis activity - Matos, Priscilla M.; Mahoney, Brian; Chan, Yohan; Day, David P.; Cabral, Mirela M. W.; Martins, Carlos Henrique Gomes; Santos, Raquel Alves dos; Bastos, Jairo Kenupp; Page, Philip C. Bulman; Heleno, Vladimir Constantino Gomes (Molecules, 2015)