Singaporentine A: A New Indole Alkaloid from Kopsia singapurensis Ridl.

• Main Authors: Awang, Khalijah, Ahmad, Kartini, Thomas, Noel Francis, Hirasawa, Yusuke, Takeya, Koichi, Mukhtar, Mat Ropi, Mohamad, Khalit, Morita, Hiroshi
• Format: Article
• Published: The Japan Institute of Heterocyclic Chemistry 2008
• Subjects: QD Chemistry; RS Pharmacy and materia medica
• Online Access: http://eprints.um.edu.my/25494/; https://doi.org/10.3987/COM-08-11438

Study on chemical constituents from the leaves of Kopsia singapurensis (Apocynaceae) yielded a new indole alkaloid, singaporentine A (1) together with two known alkaloids, kopsifoline A (2) and kopsininic acid (3). The structure of 1 was elucidated by combination of various spectroscopic methods suc...