Coincident isolation of a novel homoisoflavonoid from Resnova humifusa and Eucomis montana (Hyacinthoideae: Hyacinthaceae) |
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| Authors: | Neil A. Koorbanally Neil R. Crouch Avinash Harilal Bavani Pillay Dulcie A. Mulholland |
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| Affiliation: | 1. Natural Products Research Group, University of KwaZulu-Natal, Durban, 4041, South Africa;2. Ethnobotany Unit, National Botanical Institute, Botanic Gardens Road, Berea Road, 4007, Durban, South Africa |
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| Abstract: | We report on the first phytochemical investigation of a member of the African genus Resnova (Hyacinthoideae: Hyacinthaceae). From the dichloromethane extract of the bulbs of both Resnova humifusa and Eucomis montana (Hyacinthoideae: Hyacinthaceae) a novel 3-benzyl-4-chromanone homoisoflavonoid, 5,6-dimethoxy-7-hydroxy-3-(4′-hydroxybenzyl)-4-chromanone, was isolated. A further 11 known homoisoflavonoids were also identified, the 12 in total presenting a clear biosynthetic sequence. Eight of the 12 compounds found were common to both species. |
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| Keywords: | Resnova humifusa Eucomis montana Hyacinthaceae Hyacinthoideae 5,6-Dimethoxy-7-hydroxy-3-(4&prime -hydroxybenzyl)-4-chromanone 4&prime -Demethyl-3,9-dihydroeucomin 3,9-Dihydroeucomin 5,7-Dihydroxy-3-(3&prime -hydroxy-4&prime -methoxybenzyl)-4-chromanone 4&prime -Demethyl-5-O-methyl-3,9-dihydroeucomin 8-O-demethyl-7-O-methyl-3,9-dihydropunctatin 7-O-methyl-3,9-dihydropunctatin 4&prime -O-demethyleucomol Eucomol 7-O-methyleucomol Eucomin 3&prime ,5,7-Trihydroxy-4&prime -methoxyspiro[2H-1-benzopyran-3(4H),7&prime -bicyclo[4.2.0]octa-1,3,5-trien]-4-one Homoisoflavonoid biosynthesis |
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