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Communication | Regular issue | Vol 4, No. 2, 1976, pp.241-246
Published online, 1st January, 1970
DOI: 10.3987/R-1976-02-0241
A Simple and Stereospecific Synthesis of Diterpene Alkaloid Internediate

Tetsuji Kametani,* Yasuyuki Kato, Toshio Honda, and Keiichiro Fukumoto

*Pharmaceutical Institute, Tohoku University, Aobayama, Sendai 980-8578, Japan


Thermolysis of l-cyano-5-methoxy-l-(4-methoxycarbonyl-4-vinylpentyl)benzocyclobutene (7) gave (±)-4aα-cyano-6-methoxy-lα-methoxycarbonyl-lβ-methyl- 1,2,3,4,4a,9,10,10a-octahydrophenanthrene (9), which on reduction afforded (±)-16,17-imino-16-oxo-12-methoxypodocarpane-8,11,13-triene (10).