Studies on the constituents of the seeds of Cassia obtusifolia: The structures of two new lactones,isotoralactone and cassialactone |
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| Authors: | Susumu Kitanaka Michio Takido |
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| Affiliation: | Department of Pharmacy, College of Science and Technology, Nihon University, Chiyoda-ku, Tokyo 101, Japan |
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| Abstract: | Torosachrysone and two new naphthalenic lactones, isotoralactone and cassialactone, were isolated from the seeds of Cassia obtusifolia. Their structures were established as 9,10-dihydroxy-7-methoxy-3-methylene-1H-naphtho(2,3-c)dihydropyrone-1-one and 8-methoxy-4-methyl-1-oxo-4,10,11-trihydroxy-naphtho(2,3-c)oxepin, respectively. |
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| Keywords: | Leguminosae torosachrysone naphthalenic lactone isotoralactone cassialactone. |
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