Nitirat Chimnoi, Somchai Pisutjaroenpong, Lukana Ngiwsara, Decha Dechtrirut, Daranee Chokchaichamnankit, Nisachon Khunnawutmanotham, Chulabhorn Mahidol and Supanna Techasakul
Natural Product Research Part A 22 ( 14 ): 1249 - 1256 , 2008