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Communication | Regular issue | Vol 29, No. 9, 1989, pp.1649-1654
Published online, 1st January, 1970
DOI: 10.3987/COM-89-5048
Synthesis of Alkaloids, Cleistopholine, Oxylopine (Isoursuline), and Ursuline

Junko Koyama,* Teruyo OKatani, Kiyoshi Tagahara, and Hiroshi Irie

*Kobe Women’s College of Pharmacy, Motoyamakita, Higashinad, Kobe, Hyogo 658, Japan


Synthesis of alkaloids, cleistopholine, oxylopine (isoursuline), ursuline, and related compounds by application of a method for constructing cycloalkenopyridines was described and the synthesis revealed that the structure of oxylopine should be revised to 6-hydroxy-5-methoxyonychine from 5-hydroxy-6-methoxyonychine.