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Communication | Special issue | Vol 17, No. 1, 1982, pp.111-115
Published online, 1st January, 1970
DOI: 10.3987/S-1982-01-0111
Stereoselective Synthesis of (±)-Deethylaspidospermidine

Mitsutaka Natsume* and Iwao Utsunomiya

*Research Foundation Itsuu Laboratory, 2-28-10 Tamagawa, Setagaya-ku, Tokyo 158, Japan

Abstract

Conjugate addition of various carbanions to the enones 2 afforded 2,3-trans substituted piperidinones 3. (±)-Deethylaspidospermidine (12a) was synthesized from 1b via 5b, 7, and 11a in the stereoselective manner.