Discovery, synthesis and antibacterial evaluation of phenolic compounds from Cylicodiscus gabunensis

Table 2 Tentative identification of compounds detected from CGEEA-F5–8 by LC-MS/MS using on-line ChemSpider database (http://www.chemspider.com) and Reaxys database (https://www.reaxys.com)

RT (min)	Molecular Formula	Molecular mass	Found [M + H]⁺ m/z	Name of compound	Reference
2.36	C₇H₆O₅	170.0214	171.0287	Gallic acid (1)	[16]
2.36	C₉H₁₀O₅	198.0528	199.0603	Ethyl gallate (6)	[16]
3.07	C₂₀H₂₂O₉	406.1265	407.1338	Trans-3,5,3′,4′-tetrahydroxystilbene-3-O-β-D-glucopyranoside	[23]
3.44	C₂₂H₂₆O₁₃	498.1373	499.1446	3,4,5-Trimethoxyphenyl 6-O-(3,4,5-trihydroxybenzoyl)-β-D-glucopyranoside	[24]
3.45	C₂₂H₁₈O₈	410.1001	411.1074	3-(4-Hydroxybenzoyl)epicatechin	[25]
3.68	C₃₇H₃₀O₁₄	698.1639	699.1713	Epicatechin-(4β → 8)-catechin-3-O-(4-hydroxy)benzoate	[26]
3.72	C₃₇H₃₀O₁₅	714.1585	715.1658	Epiafzelechin-(4β → 8)- epicatechin-3-O-gallate	[27]
3.86	C₄₅H₃₈O₁₆	834.2151	835.2223	Procyanidin C-1	[28]
3.67	C₄₅H₃₈O₁₇	850.2104	851.2177	Epicatechin--(4β → 8)-epicatechin--(4β → 8)-catechin trimer	[29]

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