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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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Moreno-Velasco A, Fragoso-Serrano M, de Jesús Flores-Tafoya P, Carrillo-Rojas S, Bautista E, Leitão SG, Castañeda-Gómez JF, Pereda-Miranda R. Inhibition of multidrug-resistant MCF-7 breast cancer cells with combinations of clinical drugs and resin glycosides from Operculina hamiltonii. PHYTOCHEMISTRY 2024; 217:113922. [PMID: 37972675 DOI: 10.1016/j.phytochem.2023.113922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 10/31/2023] [Accepted: 11/09/2023] [Indexed: 11/19/2023]
Abstract
The jalap roots, Operculina hamiltonii D.F. Austin & Staples (Convolvulaceae), are extensively commercialized as a depurative and laxative remedy in traditional medicine of the north and northeast regions of Brazil. The purification by recycling HPLC and structure elucidation of three new acyl sugars or resin glycosides are described here from a commercial product made of powdered roots. Three macrocyclic structures of a tetrasaccharide of (11S)-hydroxyhexadecanoic acid, operculinic acid C (1), the undescribed hamiltonins II and III (3 and 4), in addition to the known batatinoside III (5), presented a diastereoisomeric relationship as one residue of n-dodecanoic acid esterified the oligosaccharide core on a different position in each compound. Furthermore, hamiltonin IV (6) was characterized as an ester-type homodimer of acylated operculinic acid C with the same substitution pattern identified in hamiltonins II (3) and III (4) for each of the dimer subunits. All the isolated resin glycosides did not display any intrinsic cytotoxicity (IC50 > 25 μM). However, a combination of the individual isolated compounds 3-6 (1-50 μM) demonstrated an enhancement of cytotoxic effects with sublethal doses of vinblastine and podophyllotoxin (0.003 μM) in multidrug-resistant breast carcinoma epithelial cells (MCF-7/Vin).
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Affiliation(s)
- Armando Moreno-Velasco
- Departamento de Farmacia, Facultad de Química and Programa de Maestría y Doctorado en Ciencias Químicas, Universidad Nacional Autónoma de México, Ciudad Universitaria, Mexico City, 04510, Mexico
| | - Mabel Fragoso-Serrano
- Departamento de Farmacia, Facultad de Química and Programa de Maestría y Doctorado en Ciencias Químicas, Universidad Nacional Autónoma de México, Ciudad Universitaria, Mexico City, 04510, Mexico
| | - Pedro de Jesús Flores-Tafoya
- Departamento de Farmacia, Facultad de Química and Programa de Maestría y Doctorado en Ciencias Químicas, Universidad Nacional Autónoma de México, Ciudad Universitaria, Mexico City, 04510, Mexico
| | - Sebastian Carrillo-Rojas
- Departamento de Farmacia, Facultad de Química and Programa de Maestría y Doctorado en Ciencias Químicas, Universidad Nacional Autónoma de México, Ciudad Universitaria, Mexico City, 04510, Mexico
| | - Elihu Bautista
- Consejo Nacional de Ciencia y Tecnología, División de Biología Molecular, Instituto Potosino de Investigación Científica y Tecnológica A.C., San Luis Potosí, S.L.P, Mexico
| | - Suzana Guimarães Leitão
- Faculdade de Farmacia, Universidade Federal Do Rio de Janeiro, CCS, Bloco A, Ilha Do Fundão, 21941-902, Rio de Janeiro, Brazil
| | - Jhon F Castañeda-Gómez
- Grupo Químico de Investigación y Desarrollo Ambiental. Programa de Licenciatura en Ciencias Naturales y Educación Ambiental, Facultad de Educación. Universidad Surcolombiana, Neiva, Colombia.
| | - Rogelio Pereda-Miranda
- Departamento de Farmacia, Facultad de Química and Programa de Maestría y Doctorado en Ciencias Químicas, Universidad Nacional Autónoma de México, Ciudad Universitaria, Mexico City, 04510, Mexico.
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