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Paper | Regular issue | Vol 36, No. 6, 1993, pp.1411-1416
Published online, 1st January, 1970
DOI: 10.3987/COM-93-6345
Photochemistry of Bufadienolide: Occurrence of Three Tautomers in the Photolysis of Resibufogenin

Takahiro Tanase, Nobutoshi Murakami, Akito Nagatsu, and Jinsaku Sakakibara*

*Faculty of Pharmaceutical Sciences, Nagoya City University, Tanabe-dori, Mizuho-ku, Nagoya 467-8603, Japan


The photolysis of resibufogenin (1) in MeOH was found to give a fairly labile mixture of three tautomers (2a-c) by the 1H nmr spectral analysis including difference NOE experiments.