New carvotanacetone derivatives from sphaeranthus africanus

• Main Authors: Ragasa, Consolacion Y., Tsai, Po Wei, Galvez, Cecilia T., Shen, Chien Chang
• Format: text
• Published: Animo Repository 2010
• Subjects: Compositae > Analysis; Anti-infective agents; Chemistry
• Online Access: https://animorepository.dlsu.edu.ph/faculty_research/1791; https://animorepository.dlsu.edu.ph/context/faculty_research/article/2790/type/native/viewcontent
• Institution: De La Salle University

The dichloromethane extract of the air-dried leaves of Sphaeranthus africanus afforded four new carvotanacetone derivatives (1, 2, 3a, and 3b). Their structures were elucidated by extensive 1D and 2DNMR spectroscopy. Compounds 13 exhibited antibacterial activity against Staphylococcus aureus and Pse...