Monomeric and dimeric hydrolysable tannins of Tamarix nilotica

Mohamed A.A. Orabi; Shoko Taniguchi; Tsutomu Hatano

doi:10.1016/j.phytochem.2009.07.019

Monomeric and dimeric hydrolysable tannins of Tamarix nilotica

Mohamed A.A. Orabi, Shoko Taniguchi, Tsutomu Hatano

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

Abstract

An ellagitannin monomer, nilotinin M1 (1), and three dimers, nilotinins D1 (2), D2 (3), and D3 (4), were isolated from leaves of Tamarix nilotica (Ehrenb.) Bunge. Structures were elucidated based on analysis of spectroscopic data and chemical correlations with known compounds. In addition, six known tannins, hirtellin A (5) (dimer), remurin A (6), remurin B (7), 1,3-di-O-galloyl-4,6-O-(S)-hexahydroxydiphenoyl-β-d-glucose (8), gemin D (9), and hippomanin A (10) (monomers), were isolated for the first time from this plant species. The reported ¹³C NMR assignments of the dehydrodigalloyl moiety and glucose cores of 5 are revised, and the ¹³C NMR spectroscopic data for 6 and 7 are also reported for the first time.

Original language	English
Pages (from-to)	1286-1293
Number of pages	8
Journal	Phytochemistry
Volume	70
Issue number	10
DOIs	https://doi.org/10.1016/j.phytochem.2009.07.019
Publication status	Published - Jul 2009

Keywords

Ellagitannin
Hirtellin A
Nilotinin D1
Nilotinin D2
Nilotinin D3
Nilotinin M1
Polyphenol
Tamaricaceae
Tamarix nilotica

ASJC Scopus subject areas

Biochemistry
Molecular Biology
Plant Science
Horticulture

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10.1016/j.phytochem.2009.07.019

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title = "Monomeric and dimeric hydrolysable tannins of Tamarix nilotica",

abstract = "An ellagitannin monomer, nilotinin M1 (1), and three dimers, nilotinins D1 (2), D2 (3), and D3 (4), were isolated from leaves of Tamarix nilotica (Ehrenb.) Bunge. Structures were elucidated based on analysis of spectroscopic data and chemical correlations with known compounds. In addition, six known tannins, hirtellin A (5) (dimer), remurin A (6), remurin B (7), 1,3-di-O-galloyl-4,6-O-(S)-hexahydroxydiphenoyl-β-d-glucose (8), gemin D (9), and hippomanin A (10) (monomers), were isolated for the first time from this plant species. The reported 13C NMR assignments of the dehydrodigalloyl moiety and glucose cores of 5 are revised, and the 13C NMR spectroscopic data for 6 and 7 are also reported for the first time.",

keywords = "Ellagitannin, Hirtellin A, Nilotinin D1, Nilotinin D2, Nilotinin D3, Nilotinin M1, Polyphenol, Tamaricaceae, Tamarix nilotica",

author = "Orabi, {Mohamed A.A.} and Shoko Taniguchi and Tsutomu Hatano",

note = "Funding Information: We are grateful to the SC-NMR Laboratory of Okayama University for acquisition, NMR spectra. The first author thanks the Egyptian Government (Ministry of Higher Education and State for Scientific Research) for a scholarship.",

year = "2009",

month = jul,

doi = "10.1016/j.phytochem.2009.07.019",

language = "English",

volume = "70",

pages = "1286--1293",

journal = "Phytochemistry",

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T1 - Monomeric and dimeric hydrolysable tannins of Tamarix nilotica

AU - Orabi, Mohamed A.A.

AU - Taniguchi, Shoko

AU - Hatano, Tsutomu

N1 - Funding Information: We are grateful to the SC-NMR Laboratory of Okayama University for acquisition, NMR spectra. The first author thanks the Egyptian Government (Ministry of Higher Education and State for Scientific Research) for a scholarship.

PY - 2009/7

Y1 - 2009/7

N2 - An ellagitannin monomer, nilotinin M1 (1), and three dimers, nilotinins D1 (2), D2 (3), and D3 (4), were isolated from leaves of Tamarix nilotica (Ehrenb.) Bunge. Structures were elucidated based on analysis of spectroscopic data and chemical correlations with known compounds. In addition, six known tannins, hirtellin A (5) (dimer), remurin A (6), remurin B (7), 1,3-di-O-galloyl-4,6-O-(S)-hexahydroxydiphenoyl-β-d-glucose (8), gemin D (9), and hippomanin A (10) (monomers), were isolated for the first time from this plant species. The reported 13C NMR assignments of the dehydrodigalloyl moiety and glucose cores of 5 are revised, and the 13C NMR spectroscopic data for 6 and 7 are also reported for the first time.

AB - An ellagitannin monomer, nilotinin M1 (1), and three dimers, nilotinins D1 (2), D2 (3), and D3 (4), were isolated from leaves of Tamarix nilotica (Ehrenb.) Bunge. Structures were elucidated based on analysis of spectroscopic data and chemical correlations with known compounds. In addition, six known tannins, hirtellin A (5) (dimer), remurin A (6), remurin B (7), 1,3-di-O-galloyl-4,6-O-(S)-hexahydroxydiphenoyl-β-d-glucose (8), gemin D (9), and hippomanin A (10) (monomers), were isolated for the first time from this plant species. The reported 13C NMR assignments of the dehydrodigalloyl moiety and glucose cores of 5 are revised, and the 13C NMR spectroscopic data for 6 and 7 are also reported for the first time.

KW - Ellagitannin

KW - Hirtellin A

KW - Nilotinin D1

KW - Nilotinin D2

KW - Nilotinin D3

KW - Nilotinin M1

KW - Polyphenol

KW - Tamaricaceae

KW - Tamarix nilotica

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SN - 0031-9422

VL - 70

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JO - Phytochemistry

JF - Phytochemistry

IS - 10

ER -

Monomeric and dimeric hydrolysable tannins of Tamarix nilotica

Abstract

Keywords

ASJC Scopus subject areas

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