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Review | Regular issue | Vol 4, No. 11, 1976, pp.1817-1824
Published online, 1st January, 1970
DOI: 10.3987/R-1976-11-1817
The Systematic Classification of Bisbenzylisoquinolines

Maurice Shamma* and Jerome L. Moniot

*Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, U.S.A.


Bisbenzylisoquinolines are classified into 26 types. Each benzylisoquinoline half is numbered as in expression 4 below, and is described in terms of its oxygenation pattern. The two sets of numbers denoting the oxygenated sites are separated by a hyphen. The more highly oxygenated benzylisoquinoline half constitutes the left hand side of the dimer, and is listed first. In the case of head to tail coupling, the more highly oxygenated benzylisoquinoline is placed on top, and is listed first. An asterisk (*) or other symbol († ‡) on the upper right of a number indicates the terminal of a diaryl ether. Numbers between parentheses, appearing directly after the listing of oxygenated sites, describe the positions of a biphenyl linkage. The stereochemistry of some of these alkaloids is also discussed.