82864-47-9Relevant academic research and scientific papers
Stereochemistry of 13-Hydroxyprotoberberines, Their Derivatives, and a Protopine-Type Alkaloid
Iwasa, Kinuko,Sugiura, Makiko,Takao, Narao
, p. 4275 - 4280 (1982)
13C NMR and 1H NMR spectral analyses have been used to establish the conformational structure of ophiocarpine (1), epiophiocarpine (2), their acetates and corresponding N-quaternary salts, and allocryptopine (5).
