cheminform abstract: the first total synthesis of (.+-.)-huperzine b
TRANSCRIPT
1998 alkaloids
alkaloidsU 0600
03 - 231The First Total Synthesis of (±)-Huperzine B. — The synthesis ofthe title alkaloid (VII) in 6.6% overall yield from (I) is presented with theconstruction of the tetracyclic ring skeleton (VI) via a tandem Michael additionand intramolecular Mannich cyclization as the key step. — (WU, B.; BAI, D.;J. Org. Chem. 62 (1997) 17, 5978-5981; Shanghai Inst. Mater. Med., Chin.Acad. Sci., Shanghai 200031 Peop. Rep. China; EN)
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