Chemical constituents from the root bark of Ozoroa insignis

The roots of Ozoroa insignis Del. (Heeria insignis Del.) (Anacardiaceae) are used as a remedy for diarrhea, venereal diseases, tapeworm and hookworm, schistosomiasis, kidney trouble, migraine, and malaria (Liu and Abreu, 2007). In previous biological screening of O. insignis extracts, anthelmintic effect, cytotoxic activity, and topoisomerase inhibition were reported (Liu and Abreu, 2006a). The root bark of O. insignis were collected in Masaai land, Rift valley province in Kenya, in January 2005 and authenticated by Simon Mathenge, of Nairobi University, Kenya. A voucher specimen (MM/08/04) is deposited in Nairobi University herbarium, Chiromo Campus.