New lignan glycosides from Justicia secunda Vahl (Acanthaceae) with antimicrobial and antiparasitic properties oleh Viviane Flore Kamlo Kamso, Yanick Kevin Dongmo Melogmo, Billy Toussie Tchegnitegni, Mariscal Brice Tchatat Tali, Darline Dize, Cyrille Njampa Ngansop, Pantaléon Ambassa, Judith Laure Ouete Nantchouang, Ingrid Simo Konga, Fabrice Fekam Boyom, Bonaventure Tchaleu Ngadjui, Ghislain Wabo Fotso