New antimicrobial cyclolignan and others constituents from the leaves of Scyphocephalium mannii (Benth. & Hook.f.) Warb - Dieu Ne Dort Nganteng; Raduis Melong; Timoleon Maffo; Roland T. Tchuenguem; Aurelien Crochet; Jean Paul Dzoyem; Pascal Wafo; Christian G. Bochet; Bonaventure Tchaleu Ngadjui (Natural Product Research, 2022)