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Paper | Regular issue | Vol 34, No. 1, 1992, pp.157-171
Published online, 1st January, 1970
DOI: 10.3987/COM-91-5908
New Tetrahydrofuranoid Steroidal Alkaloids from the Leaves of Buxus hildebrandtii

Atta-ur-Rahman,* M. Iqbal Choudhary,* Athar Ata, and Ermais Dagne

*H. E. J. Research Institute of Chemistry, University of Karachi, Karachi-75270, Pakistan

Abstract

Four new tetrahydrofuranoid steroidal alkaloids, (+)-O6-buxafuranamine (1), (+)-2-dehydroxy-O2-buxafuranamine (2), (-)-O10-buxafuranamine (3) and (-)-6-dehydroxy-O10-buxafuranamine (4) have been isolated from the leaves of Buxus hildebrandtii. These are the members of a new series of Buxus steroidal bases containing a tetrahydrofuran ring incorporated in their structures. The structures were established on the basis of extensive spectroscopic studies. Three new classes along with several more examples of the previously mentioned structural classes have been included in the rules which relates the structural features with the specific rotations.