@Article{IPB-1905, author = {Thuy, T. T. and Porzel, A. and Franke, K. and Wessjohann, L. and Sung, T. V.}, title = {{Isoquinolone and Protoberberine Alkaloids from Stephania rotunda}}, year = {2006}, journal = {ChemInform}, doi = {10.1002/chin.200601202}, volume = {37}, }