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Acyl Quinic Acid Derivatives From the Stems of Erycibe Obtusifolia

Acyl Quinic Acid Derivatives From the Stems of Erycibe Obtusifolia

Zhaozhen Liu, Ziming Feng, Yanan Yang, Jianshuang Jiang, Peicheng Zhang

Fitoterapia. 2014 Dec;99:109-16.

PMID: 25256062

Abstract:

Eleven new acyl quinic acid derivatives, 4-O-caffeoyl-3-O-syringoylquinic acid methyl ester (1), 4-O-caffeoyl-3-O-vanilloylquinic acid (2), 4-O-caffeoyl-3-O-vanilloylquinic acid methyl ester (3), 5-O-caffeoyl-3-O-vanilloylquinic acid (4), 5-O-caffeoyl-3-O-vanilloylquinic acid methyl ester (5), 5-O-caffeoyl-3-O-sinapoylquinic acid (6), 5-O-caffeoyl-4-O-vanilloylquinic acid (7), 4-O-(7‴S, 8‴R)-glycosmisoyl-5-O-caffeoylquinic acid methyl ester (8), 4-O-(7‴S, 8‴R)-glycosmisoyl-5-O-caffeoylquinic acid (9), 3-O-(7‴S, 8‴R)-glycosmisoyl-4-O-caffeoylquinic acid (10), and 3-O-(7‴S, 8‴R)-glycosmisoyl-4-O-caffeoylquinic acid methyl ester (11), have been isolated from the stems of Erycibe obtusifolia together with eight known compounds (12-19). Their structures were elucidated on the basis of spectroscopic data analysis (UV, IR, HRESIMS, CD, and 1D and 2D NMR) and chemical evidence. In in vitro assay, compounds 7 and 16-18 exhibited significant neuroprotective effects against rotenone induced PC12 cell damage at 10 μM.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP77952	Quinic acid		77-95-2	Price

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