Three indole ankaloids from Kopsia pitardii Merr
Abstract
Three monoterpenoid indole alkaloids: methyl 11, 12-methylenedioxy-N1-decarbomethoxy-D14,15-chanofruticosinate (1), methyl -N1-decarbomethoxychanofruticosinate (2) methyl 11,12-methylenedioxychanfruicosinate (3) were isolated from dried leaves of the Vietnamese medicinal plant Trang-Nam (Kopsia pitardii Merr., Apocynaceae) with 0,12, 0.038 and 0.005% yields, respectively. Their structures were detemined by NMR means