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Uemura K, Murakami R, Kimura E, Kai M, Misuda N, Yasuda S, Miyashita H, Yoshimitsu H, Tsuchihasi R, Okawa M, Kinjo J, Ono M. Identification and characterization of organic and glycosidic acids in the crude resin glycoside fraction of Ipomoea lacunosa seeds. Carbohydr Res 2024; 536:109048. [PMID: 38310808 DOI: 10.1016/j.carres.2024.109048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Revised: 01/29/2024] [Accepted: 01/29/2024] [Indexed: 02/06/2024]
Abstract
Resin glycosides are commonly found in plants belonging to the Convolvulaceae family. Ipomoea lacunosa L. (Convolvulaceae) is an herbaceous vine native to the United States. The resin glycosides of this plant have not been studied in detail. In this study, the components of the crude resin glycoside fraction extracted from the seeds of I. lacunosa are characterized. Alkaline hydrolysis of the crude resin glycoside fraction obtained from methanolic extract of the seeds yielded three organic acids, namely, 2S-methylbutyric, (E)-2-methylbut-2-enoic, and 2R-methyl-3R-hydroxybutyric acids, and a glycosidic acid fraction. Acidic hydrolysis of the glycosidic acid fraction yielded hydroxyl fatty acid components, including 7S-hydroxydecanoic, 11S-hydroxytetradecanoic, 11S-hydroxyhexadecanoic, 3S,11S-dihydroxytetradecanoic, 3S,11S-dihydroxyhexadecanoic, and 3S,12S-dihydroxyhexadecanoic acids, as well as monosaccharide components, including d-glucose, d-quinovose, d-fucose, and l-rhamnose. Trimethylsilyldiazomethane-hexane treatment of the glycosidic acid fraction further yielded eleven previously undescribed glycosidic acid methyl esters and two known glycosidic acid methyl esters. The structures of the obtained compounds were characterized using various spectral techniques. Four of the undescribed compounds were hexaglycosides, five were heptaglycosides, and two were octaglycosides. The aglycone of these compounds was either methyl 11S-hydroxytetradecanoate, methyl 3S,11S-dihydroxytetradecanoate, or methyl 3S,11S-dihydroxyhexadecanoate. Among the undescribed compounds identified, eight contained novel glycans, and three were rare bisdesmosides with sugar linkages at the C-3 and C-11 positions of methyl 3S,11S-dihydroxytetradecanoate.
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Affiliation(s)
- Kazutaka Uemura
- School of Agriculture, Tokai University, 871-12 Sugido, Mashiki-Cho, Kamimashiki-Gun, Kumamoto, 861-2205, Japan
| | - Renjyu Murakami
- School of Agriculture, Tokai University, 871-12 Sugido, Mashiki-Cho, Kamimashiki-Gun, Kumamoto, 861-2205, Japan
| | - Eiki Kimura
- School of Agriculture, Tokai University, 871-12 Sugido, Mashiki-Cho, Kamimashiki-Gun, Kumamoto, 861-2205, Japan
| | - Marina Kai
- School of Agriculture, Tokai University, 871-12 Sugido, Mashiki-Cho, Kamimashiki-Gun, Kumamoto, 861-2205, Japan
| | - Nodoka Misuda
- School of Agriculture, Tokai University, 871-12 Sugido, Mashiki-Cho, Kamimashiki-Gun, Kumamoto, 861-2205, Japan
| | - Shin Yasuda
- School of Agriculture, Tokai University, 871-12 Sugido, Mashiki-Cho, Kamimashiki-Gun, Kumamoto, 861-2205, Japan
| | - Hiroyuki Miyashita
- Faculty of Pharmaceutical Sciences, Sojo University, 4-22-2 Ikeda, Nishi-ku, Kumamoto, 860-0082, Japan
| | - Hitoshi Yoshimitsu
- Faculty of Pharmaceutical Sciences, Sojo University, 4-22-2 Ikeda, Nishi-ku, Kumamoto, 860-0082, Japan
| | - Ryota Tsuchihasi
- Faculty of Pharmaceutical Sciences, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka, 814-0180, Japan
| | - Masafumi Okawa
- Faculty of Pharmaceutical Sciences, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka, 814-0180, Japan
| | - Junei Kinjo
- Faculty of Pharmaceutical Sciences, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka, 814-0180, Japan
| | - Masateru Ono
- School of Agriculture, Tokai University, 871-12 Sugido, Mashiki-Cho, Kamimashiki-Gun, Kumamoto, 861-2205, Japan.
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Tasdemir D, Brun R, Franzblau SG, Sezgin Y, Calis I. Evaluation of antiprotozoal and antimycobacterial activities of the resin glycosides and the other metabolites of Scrophularia cryptophila. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2008; 15:209-15. [PMID: 17761408 DOI: 10.1016/j.phymed.2007.07.032] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2007] [Accepted: 07/23/2007] [Indexed: 05/17/2023]
Abstract
Resin glycosides are secondary metabolites exclusive to the convolvulaceous plants. In this study, crypthophilic acids A-C (1-3), the first resin glycosides occurring in another family (Scrophulariaceae), and the other constituents of Scrophularia cryptophila were examined for in vitro antiprotozoal and antimycobacterial potentials. Except for crypthophilic acid B (2), all tested compounds exhibited growth-inhibitory effect against Trypanosoma brucei rhodesiense, with l-tryptophan (6) and buddlejasaponin III (7) being the most potent ones (IC(50)'s 4.1 and 9.7 microg/ml). In contrast, the activity towards Trypanosoma cruzi was poor, and only crypthophilic acid C (3), 6 and 7 were trypanocidal at concentrations above 40 microg/ml. With the exception of 2 and 6, all compounds were active against Leishmania donovani. Harpagide (4) and 3 emerged as the best leishmanicidal agents (IC(50)'s 2.0 and 5.8 microg/ml). Only compounds 3, 6 and 7 showed antimalarial activity against Plasmodium falciparum with IC(50) values of 4.2, 16.6 and 22.4 microg/ml. Overall the best and broadest spectrum activity was presented by compounds 3 and 7, as they inhibited all four parasitic protozoa. None of the isolates had significant activity against Mycobacterium tuberculosis (MICs >100 microg/ml) or were toxic towards mammalian (L6) cells. This is the first report of antiprotozoal activity for natural resin glycosides, as well as for harpagide (4), acetylharpagide (5), tryptophan (6) and buddlejasaponin III (7).
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Affiliation(s)
- Deniz Tasdemir
- Centre for Pharmacognosy and Phytotherapy, School of Pharmacy, University of London, 29-39 Brunswick Square, London WC1N 1AX, UK.
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Caliş I, Sezgin Y, Dönmez AA, Rüedi P, Tasdemir D. Crypthophilic acids A, B, and C: resin glycosides from aerial parts of Scrophularia crypthophila. JOURNAL OF NATURAL PRODUCTS 2007; 70:43-7. [PMID: 17253848 DOI: 10.1021/np060511k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The water-soluble part of the methanolic extract from the aerial parts of Scrophularia crypthophila, through chromatographic methods, yielded three new resin glycosides, crypthophilic acids A - C (1-3). Compounds 1-3 are tetraglycosides of (+)-3S,12S-dihydroxypalmitic acid. The structures of these and 10 known compounds were elucidated by spectroscopic and chemical means. All natural resin glycosides known so far have been obtained from Convolvulaceae plants; this is the first report of such glycosides from another, taxonomically unrelated family (Scrophulariaceae).
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Affiliation(s)
- Ihsan Caliş
- Department of Pharmacognosy, Faculty of Pharmacy, Hacettepe University, TR-06100 Ankara, Turkey.
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