3-O-Caffeoylquinic acid methyl ester
3-O-Caffeoylquinic acid methyl ester is a natural product from Morus alba L.
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Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to
24 months(2-8C).
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20C. Generally, these will be useable for up to two weeks. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.
Need more advice on solubility, usage and handling? Please email to: service@chemfaces.com
The packaging of the product may have turned upside down during transportation, resulting in the natural compounds adhering to the neck or cap of the vial. take the vial out of its packaging and gently shake to let the compounds fall to the bottom of the vial. for liquid products, centrifuge at 200-500 RPM to gather the liquid at the bottom of the vial. try to avoid loss or contamination during handling.
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Planta Med. 2004 Aug;70(8):711-7.
Inhibiting activities of the secondary metabolites of Phlomis brunneogaleata against parasitic protozoa and plasmodial enoyl-ACP Reductase, a crucial enzyme in fatty acid biosynthesis.[Pubmed:
15326547 ]
Anti-plasmodial activity-guided fractionation of Phlomis brunneogaleata (Lamiaceae) led to the isolation of two new metabolites, the iridoid glycoside, brunneogaleatoside and a new pyrrolidinium derivative (2 S,4 R)-2-carboxy-4-( E)- p-coumaroyloxy-1,1-dimethylpyrrolidinium inner salt [(2 S,4 R)-1,1-dimethyl-4-( E)- p-coumaroyloxyproline inner salt]. Moreover, a known iridoid glycoside, ipolamiide, six known phenylethanoid glycosides, verbascoside, isoverbascoside, forsythoside B, echinacoside, glucopyranosyl-(1-->G (i)-6)-martynoside and integrifolioside B, two flavone glycosides, luteolin 7- O-beta- D-glucopyranoside ( 10) and chrysoeriol 7- O-beta- D-glucopyranoside ( 11), a lignan glycoside liriodendrin, an acetophenone glycoside 4-hydroxyacetophenone 4- O-(6'- O-beta- D-apiofuranosyl)-beta- D-glucopyranoside and three caffeic acid esters, chlorogenic acid, 3-O-Caffeoylquinic acid methyl ester and 5- O-caffeoylshikimic acid were isolated.
METHODS AND RESULTS:
The structures of the pure compounds were elucidated by means of spectroscopic methods (UV, IR, MS, 1D and 2D NMR, [alpha] (D)) and X-ray crystallography. Compounds 10 and 11 were determined to be the major anti-malarial principles of the crude extract (IC (50) values of 2.4 and 5.9 micrograms/mL, respectively). They also exhibited significant leishmanicidal activity (IC (50) = 1.1 and 4.1 micrograms/mL, respectively). The inhibitory potential of the pure metabolites against plasmodial enoyl-ACP reductase (FabI), which is the key regulator of type II fatty acid synthases (FAS-II) in P. falciparum, was also assessed.
CONCLUSIONS:
Compound 10 showed promising FabI inhibiting effect (IC (50) = 10 micrograms/mL) and appears to be the first anti-malarial natural product targeting FabI of P. falciparum.
Yao Xue Xue Bao. 2014 Apr;49(4):504-6.
Studies on chemical constituents from fruits of Morus alba L.[Pubmed:
24974468]
Chemical investigation of fruits of Mours alba L. lead to the isolation of fifteen compounds by various chromatographies such as silica gel, Sephadex LH-20, RP-C18 column chromatography.
METHODS AND RESULTS:
Their structures were determined to be: 1-[5-(2-formlfuryl) methyl] dihydrogen 2-hydroxypropane-1, 2, 3-tricarboxylate 2, 3-diethyl ester (1), 1-[2-(furan-2-yl)-2-oxoethyl] pyrrolidin-2-one (2), divaricataester A (3), methyl 1-[2-(furan-2-yl)-2-oxoethyl]-5-oxopyrrolidine-2-carboxylate (4), 1-[2-(furan-2-yl)-2-oxoethyl]-5-oxopyrrolidine-2-carboxylic acid (5), L-pyroglutamic acid (6), L-pyroglutamic acid ethyl ester (7), 3-O-Caffeoylquinic acid methyl ester (8), 3-O-caffeoylquinic acid ethyl ester (9), 5-O-caffeoylquinic acid methyl ester (10), 5-O-caffeoylquinic acid ethyl ester (11), 4-O-caffeoylquinic acid methyl ester (12), 4-O-caffeoylquinic acid methyl ester (13), 4-O-caffeoylquinic acid (14), 3-O-caffeoylquinic acid (15), respectively, based on the spectral analysis such as NMR, MS etc.
CONCLUSIONS:
Compounds 1-14 were isolated from this genus for the first time, among which 1 was a new compound.
