Alkaloids from leaves and bark of Alstonia scholaris in the Philippines

• Main Authors: Yamauchi, Tatsuo, Abe, Fumiko, Padolina, William G, Dayrit, Fabian M
• Format: text
• Published: Archīum Ateneo 1990
• Subjects: Alstonia scholaris; Apocynaceae leaves; bark; alkaloids; Chemistry; Organic Chemistry
• Online Access: https://archium.ateneo.edu/chemistry-faculty-pubs/97; https://www.sciencedirect.com/science/article/abs/pii/003194229080208X
• Institution: Ateneo De Manila University

Lagunamine (19-hydroxytubotaiwine), angustilobine B acid and losbanine (6,7-seco-6-nor-angustilobine B) were obtained from the leaves of PhilippineAlstonia scholaris, together with tubotaiwine, its oxide, and 6,7-seco- angustilobine B; the structures were determined from spectral evidence. 17-O-Acet...