Patoomratana TuchindaManat PohmakotrBamroong MunyooVichai ReutrakulThawatchai SantisukMahidol UniversityThailand Royal Forest Department2018-09-072018-09-072000-04-01Phytochemistry. Vol.53, No.8 (2000), 1079-1082003194222-s2.0-0034716811https://repository.li.mahidol.ac.th/handle/20.500.14594/25801An azaanthracene alkaloid, 1-aza-9,10-dimethoxy-4-methyl-2-oxo-1,2- dihydroanthracene (kalasinamide) has been isolated from the stems of Polyalthia suberosa. In addition, the known N-trans-feruloyltyramine and N- trans-coumaroyltyramine are also reported from the same source. The structures were elucidated by spectroscopic methods. (C) 2000 Elsevier Science Ltd.Mahidol UniversityAgricultural and Biological SciencesBiochemistry, Genetics and Molecular BiologyArticleSCOPUS10.1016/S0031-9422(99)00535-X