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Report | Regular issue | Vol 19, No. 12, 1982, pp.2355-2360
Published online, 1st January, 1970
DOI: 10.3987/R-1982-12-2355
Sindamine, Punjabine, and Gilgitine: Three New Secobisbenzylisoquinoline Alkaloids

John E. Leet, S. Fazal Hussain, Robert D. Minard, and Maurice Shamma

*Department of Chemistry, The Pennsylvania State University, York Campus, P1031 Edgecomb Avenue, York, Pennsylvania 17403, U.S.A.

Abstract

Three new secobisbenzylisoquinolines found in Berberis lycium Royle (Berberidaceae) are (+)-sindamine (3). (—)-punjabine (4) and (—)-gilgitine (5). Alkaloids 4 and 5 are the first seco dimeric alkaloids derived from in vivo oxidation of a bisbenzylisoquinoline precursor incorporating three diaryl ether bridges.