Kongkathip, Ngampong; Kongkathip, Boonsong; Siripong, Pongpun; Sangma, Chak; Luangkamin, Suwaporn; Niyomdecha, Momad; Pattanapa, Suppachai; Piyaviriyagul, Suratsawadee; Kongsaeree, Palangpon
Bioorganic and Medicinal Chemistry, 2003 , vol. 11, # 14 p. 3179 - 3191