Chemical and Pharmaceutical Bulletin
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Five New Peltogynoids from Underground Parts of Iris bungei: A Mongolian Medicinal Plant
Muhammad Iqbal CHOUDHARYMuhammad NUR-E-ALAMFarzana AKHTARShakil AHMADIrfan BAIGPurev ÖNDÖGNIIPurevsuren GOMBOSURENGYINAtta-ur RAHMAN
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2001 Volume 49 Issue 10 Pages 1295-1298

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Abstract

Five new peltogynoids, irisoids A—E (1—5), have been isolated from the underground parts of Iris bungei. The structures of the new compounds were established on the basis of spectroscopic methods and were found to be 1,8,10-trihydroxy-9-methoxy-[1]benzopyrano-[3,2-c][2]-benzopyran-7(5H)-one (1), 1,8-dihydroxy-9,10-dimethoxy-[1]benzopyrano-[3,2-c][2]-benzopyran-7(5H)-one (2), 1,10-dihydroxy-8,9-dimethoxy-[1]benzopyrano-[3,2-c][2]-benzopyran-7(5H)-one (3), 1,8-dihydroxy-9,10-methylenedioxy-[1]benzopyrano-[3,2-c][2]-benzopyran-7(5H)-one (4), and 1,8,11-trihydroxy-9,10-methylenedioxy-[1]benzopyrano-[3,2-c][2]-benzopyran-7(5H)-one (5). The structures of irisoid B (2) was established unambiguously by X-ray diffraction study.

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© 2001 The Pharmaceutical Society of Japan
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