Two new norditerpenoid alkaloids from Delphinium potaninii.
Further studies on the chemical constituents of Delphinium potaninii roots led to the isolation of two new lycoctonine-type norditerpenoid alkaloids, potanisines A (1) and B (3). The structures of these compounds were determined by interpretation of the spectroscopic data. They are the first examples of naturally occurring lycoctonine-type norditerpenoid alkaloids possessing an N-formyl moiety.
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Department of Chemistry of Medicinal Natural Products, School of Pharmacy, West China University of Medical Sciences, Chengdu 610041, China.
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Wang
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