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Communication | Regular issue | Vol 23, No. 1, 1985, pp.11-15
Published online, 1st January, 1970
DOI: 10.3987/R-1985-01-0011
The Structures of Four New Diterpenoid Alkaloids from Delphinium Bonvalotti Franch

Qing Ping Jiang and Wei Liang Sung*

*Institute of Materia Medica, Chinese Academy of MedicalSceince, Nan-wei Road, Beijing 100050, China


Continued investigation of the alkaloids of Delphinium bonvalotii Franch has led to the isolation and structural determination of four new diterpenoid alkaloids, delbotine (1), delboxine (3), delbonine (5) and delbine (6), together with two known bases, deltamine and deltaline. Structures 1 and 3 were confirmed by x-ray analyses. Delboxine (3) and delbine (6) are the first examples of C18-diterpenoid alkaloids bearing C(6)-oxygenated substituent.