21618-92-8Relevant academic research and scientific papers
Concise synthesis of catechin metabolites 5-(30,40-dihydroxyphenyl)-γ-valerolactones (dhpv) in optically pure form and their stereochemical effects on skin wrinkle-reducing activities
Hur, Joonseong,Kim, A-Ram,Kim, Hyun Su,Kim, Tae-Aug,Kim, Taewoo,Lim, Changjin,Sim, Jaehoon,Suh, Young-Ger
, (2020/04/29)
A concise and scalable synthetic route for optically pure (4S) and (4R)-5-(30,40-dihydroxyphenyl)-γ-valerolactones (DHPVs), catechin metabolites, has been developed via the efficient construction of a γ-valerolactone moiety from hexe
Novel method for synthesizing DHPV
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Paragraph 0054-0056; 0062-0064, (2019/10/15)
The present invention relates to a novel synthesis method of DHPV. More specifically, the present invention relates to the novel synthesis method of (5-3andprime;,4andprime;-dihydroxyphenyl)-andgamma;-valerolactone (DHPV) which is a major metabolite of ca
COMPOSITION FOR PREVENTING, IMPROVING OR TREATING PHOTOAGING OF SKIN COMPRISING DHPV
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Paragraph 0034, (2019/02/05)
The present invention relates to a photoaging inhibitor, and more specifically it relates to a pharmaceutical composition, a food composition or a cosmetic composition for preventing, improving or treating photoaging of skin, comprising DHPV (5-(3′,4′-Dih
Concise synthesis of ring-fission metabolites of epicatechin: 5-(3,4-dihydroxybenzyl)dihydrofuran-2(3H)-one M6
Chang, Xiaowei,Peng, Weimin,Yao, Yin-Fang,Koek, Jan
experimental part, p. 3346 - 3352 (2011/01/04)
The ring-fission metabolites of epicatechin, 5-(3,4-dihydroxybenzyl) dihydrofuran-2(3H)-one M6 and 3-methylated M6, were prepared from 3,4-dihydroxybenzaldehyde and furan-2(5H)-one using two new concise methods in excellent yields (three or two steps in 4
Synthesis and biological activity of the tea catechin metabolites, M4 and M6 and their methoxy-derivatives
Lambert, Joshua D.,Rice, Joseph E.,Hong, Jungil,Hou, Zhe,Yang, Chung S.
, p. 873 - 876 (2007/10/03)
Syntheses are reported for metabolites M4 (1) and M6 (2) of the green tea polyphenols epicatechin (EC) and epigallocatechin (EGC) and their gallate derivatives. Several methoxy-derivatives of 1 and 2 were also prepared. Compounds 1 and 2 were evaluated for growth inhibitory activity against a panel of immortalized and malignant human cell lines with 1 being the more active compound. The possible antiinflammatory activity of 1 and its trimethoxy derivative was also evaluated. Neither compound inhibited the release of arachidonic acid, although 1 inhibited NO production by 50% at 20 μM.
Urinary metabolites of French maritime pine bark extract in humans
Dueweler, K. Grosse,Rohdewald
, p. 364 - 368 (2007/10/03)
After oral administration of 5.28 g and 1.06 g of French maritime pine bark extract to a human volunteer, metabolites of some of the components of the extract could be detected. Ferulic acid and taxifolin, conjugated as glucuronide/sulphate, were excreted within 18 h. The peak urinary excretion was observed approximately 2-3 h after intake. Recovery of ferulic acid in urine was 36-43% and 7-8% for taxifolin. Two further metabolites could be identified as δ-(3,4-dihydroxy-phenyl)-γ-valerolactone and δ-(3-methoxy-4- hydroxyphenyl)-γ-valerolactone conjugated with glucuronic acid/sulphate. These metabolites could also be detected after intake of 960 mg of a procyanidin fraction of French maritime pine bark extract. Thus, it was shown that procyanidins are metabolised by humans. Both metabolites show maximal urinary excretion 8-12 h after intake and are excreted within 28-34 h.
