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Malaria is responsible for about a million deaths yearly. The fight against malaria is faced with the occurrence of widespread resistance of the malaria parasite, Plasmodium spp. The search for plant derived anti-malarial drugs has become greatly imperative. This study was aimed to isolate and investigate the In vivo anti-malarial activity of pulcherrimin  A isolated from the stem bark of Caesalpinia  pulcherrima. Ethyl acetate fraction of the stem bark extract  was subjected to fractionation over silica gel column to obtain pure compound which was characterized as 3,5,6,7-tetrahydroxy-19-vouacanoic acid;(3β,5α,6β,7β)-form,6,7-dibenzoyl (pulcherrimin A) a known compound using various spectroscopic techniques. Pulcherrimin A was evaluated for In vivo anti-malarial activity against P. berghe infected mice using the 4-day suppressive test. Different doses (50, 200 and 400 mg/kg/day) of pulcherrimin A were administered to the mice after parasite inoculation. A maximum parasitaemia suppression of 68.18% was observed for the middle dose (200 mg/kg/day) in contrast with 40.91% for the highest dose (400 mg/kg/day). The study therefore revealed that pulcherrimin A isolated from the stem bark of C. pulcherrima exhibited moderate-dose significant (p

Isolation, characterisation and in vivo anti-malarial investigation of pulcherrimin A from Caesalpinia pulcherrima stem bark