See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/263176757 Triterpenoids from the Bark of Alstonia Spathulata Bl. (Apocynaceae) Article · January 2013 CITATIONS 0 READS 53 6 authors, including: Some of the authors of this publication are also working on these related projects: Chemical constituents of Croton species (Euphorbiaceae) View project Phyllanthus amarus and their bioactivity View project Kartini Ahmad Universiti Pendidikan Sultan Idris (UPSI) 56 PUBLICATIONS 231 CITATIONS SEE PROFILE Khalijah Awang University of Malaya 482 PUBLICATIONS 2,398 CITATIONS SEE PROFILE Siow-Ping Tan Tunku Abdul Rahman University College 13 PUBLICATIONS 164 CITATIONS SEE PROFILE Mohd azlan Nafiah Universiti Pendidikan Sultan Idris (UPSI) 37 PUBLICATIONS 86 CITATIONS SEE PROFILE All content following this page was uploaded by Siow-Ping Tan on 20 June 2014. The user has requested enhancement of the downloaded file. All in-text references underlined in blue are added to the original document and are linked to publications on ResearchGate, letting you access and read them immediately.