Nkọwa: Osisi Cinchona ka bụ naanị isi iyi nke quinine. Otú ọ dị, n'okpuru nrụgide agha, a na-eme nchọpụta maka mmepụta ya. A rụpụtara usoro kemịkalụ kemịkalụ na 1944 site n'aka ndị American chemists R.B. Woodward na W.E. Doering. Kemgbe ahụ, e nweela ọtụtụ ihe ndị ọzọ na-arụ ọrụ nke ọma na quinine, ma ọ dịghị nke ọ bụla n'ime ha nwere ike ịsọ mpi n'ụzọ akụ na ụba site na iche iche nke alkaloid site na isi mmalite. William Henry Perkin chọpụtara nke mbụ na 1856 mgbe ọ na-agbalị ịmepụta quinine. Ajụjụ: Ebee ka a pụrụ ịchọta quinine?
Osisi Cinchona