Wu M, Wu X, Zheng L, Zhang L, Fu J, Zhang X, Wu S, Ni L. Discovery of
glucosyloxybenzyl 2-hydroxy-2-isobutylsuccinates with anti-inflammatory activities from Pleione grandiflora.
Fitoterapia 2021;
155:105062. [PMID:
34655702 DOI:
10.1016/j.fitote.2021.105062]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 10/09/2021] [Accepted: 10/10/2021] [Indexed: 01/17/2023]
Abstract
Six new glucosyloxybenzyl 2-hydroxy-2-isobutylsuccinates, pleionesides A-F (1-6), along with two known compounds (7, 8) were obtained from the pseudobulbs of Pleione grandiflora (Rolfe) Rolfe. The structures and absolute configurations of new compounds were established by HRESIMS and NMR data, along with acidic hydrolysis and alkaline hydrolysis experiments. Compounds 1-6 were tested for their anti-inflammatory activities on LPS-induced BV2 microglial cells. Amoung them, 2, 4 and 5 showed moderate activities with IC50 values of 73.4, 32.8 and 57.1 μM, respectively, compared with the positive control quercetin with an IC50 value of 28.3 μM.
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