Lumutinines A-D, linearly fused macroline-macroline and macroline-sarpagine bisindoles from alstonia macrophylla by Lim, Siew-Huah, Tan, Shin-Jowl, Low, Yun-Yee, Kam, Toh-Seok

Development of an Alkaloid-Pyrone Annulation: Synthesis of Pleiomaltinine by Ziegler, Robert E., Tan, Shin Jowl, Kam, Toh Seok, Porco, John A.

Unusual indole alkaloid-pyrrole, -pyrone, and -carbamic acid adducts from Alstonia angustifolia by Tan, Shin-Jowl, Choo, Yeun-Mun, Thomas, N.F., Robinson, W.T., Komiyama, K., Kam, Toh-Seok