[1] Univ Marien Ngouabi, Fac Sci Sante, Lab Biochim & Pharmacol, Brazzaville 69, Rep Congo
[2] CERVE, Brazzaville, Rep Congo
[3] Univ Camerino, Scuola Sci Farmaco & Prodotti Salute, I-62032 Camerino, MC, Italy
[4] ICSN CNRS, Gif Sur Yvette, France
[5] Univ Marien Ngouabi, Fac Sci, Unite Chim Vegetal & Vie, Brazzaville 69, Rep Congo