Naphthoquinones, antiparasitic

Some Psychotria species, such as P. microlabastra [76], P. capensis [78], P. rostrata [79], and several species from the Atlantic Forest [80], have known antibiotic properties. Antiviral (P. serpens) [81], antiviral/antifungal, anti-inflammatoiy (P. hawaiiensis [82] and P. insularum [83]), and antiparasitical activities (P. camponutans [84] and P. klugii [70]) have also been reported. Other bioactivities include cytotoxic properties (P. prunifolia) [85] and regulation of human growth hormone release (P. oleiodes) [86]. The active molecules produced by Psychotria species include pigments [87], peptides [88], naphthoquinones [89], benzoquinones [90], and alkaloids [91]. 

---