Glycosylated Constituents of Iris fulva and Iris brevicaulis
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- Fang Rui
- Royal Botanic Gardens, Kew
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- Veitch Nigel C.
- Royal Botanic Gardens, Kew
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- Kite Geoffrey C.
- Royal Botanic Gardens, Kew
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- Howes Melanie-Jayne R.
- Royal Botanic Gardens, Kew
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- Porter Elaine A.
- Royal Botanic Gardens, Kew
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- Simmonds Monique S. J.
- Royal Botanic Gardens, Kew
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Abstract
The major constituents of leaf extracts of Iris fulva KER GAWL. comprised a known flavone C-glycoside, 5,4′-dihydroxy-7-methoxyflavone-6-C-(6‴-O-(E)-p-coumaroyl-β-glucopyranosyl)(1‴→2″)-β-glucopyranoside (1) and the new monoterpene glycoside, linalyl-6′-O-(3″-hydroxy-3″-methylglutaroyl)-β-D-glucopyranoside (2), both of which were prominent components of Iris brevicaulis RAF. leaf extracts. The structure of a new polyacylated sucrose derivative (3a) obtained from the rhizomes of I. fulva was elucidated as 3-O-(E)-p-coumaroyl-β-D-fructofuranosyl-(2↔1′)-[2″,4″,6″-tri-O-acetyl-β-D-glucopyranosyl-(1″→3′)-(2′,6′-di-O-acetyl-4′-O-(E)-p-coumaroyl-α-D-glucopyranoside)]. Selective hydrolysis of the 4″-O-acetyl moiety of the terminal β-glucopyranosyl residue of 3a occurred after several hours in solution giving 3-O-(E)-p-coumaroyl-β-D-fructofuranosyl-(2↔1′)-[2″,6″-di-O-acetyl-β-D-glucopyranosyl-(1″→3′)-(2′,6′-di-O-acetyl-4′-O-(E)-p-coumaroyl-α-D-glucopyranoside)] (3b), which subsequently underwent further deacetylation.
Journal
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- Chemical and Pharmaceutical Bulletin
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Chemical and Pharmaceutical Bulletin 59 (1), 124-128, 2011
The Pharmaceutical Society of Japan
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Details 詳細情報について
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- CRID
- 1390001204174175232
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- NII Article ID
- 130000405502
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- NII Book ID
- AA00602100
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- ISSN
- 13475223
- 00092363
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- NDL BIB ID
- 10927548
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed