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SUPPLEMENTARY INFORMATION Chlorogenic Acids and the Acyl Electronic Supplementary Material (ESI) for Natural Product Reports. This journal is © The Royal Society of Chemistry 2017 SUPPLEMENTARY INFORMATION Chlorogenic acids and the acyl-quinic acids: discovery, biosynthesis, bioavailability and bioactivity Michael N. Clifforda, Indu B. Jaganathb, Iziar A. Ludwigc, and Alan Crozierd* aSchool of Bioscience and Medicine, Faculty of Health and Medical Sciences, University of Surrey, Guildford, UK. E-mail: [email protected] bMalaysian Agricultural Research and Development Institute, Kuala Lumpur, Malaysia. E- mail:[email protected] cDepartment of Food Technology, University of Lleida, Lleida, Spain. E-mail: [email protected] dMeyer Hall, Department of Nutrition, University of California, Davis, CA, USA. E-mail: [email protected] *Correspondence: Alan Crozier, Meyer Hall, Department of Nutrition, University of California, Davis, CA 96616-5270, USA. Supplementary Table 1. Trivial names associated with acyl-quinic acids and the associated systematic name using IUPAC numbering.a1 Trivial Name Origin Current Interpretation with IUPAC numbering Notes Band 510 Sondheimer (1958)2 4-O-Caffeoylquinic acid Burkinabins Ouattara et al. (2004)3 Divanilloylquinic acids Castusic acid Kirmizibekmev and Demir (2016)4 4-p-Hydroxybenzoyl-5-O-caffeoylquinic acid The original isolate subsequently described as Chlorogen acid/chlorogenic acid 5,6 Payen (1846) 5-O-Caffeoylquinic acid 3-caffeoylquinic acid and now known as 5- caffeoylquinic acid IUPAC Chlorogenic acids Used in the plural to denote the extended family of structurally related compounds Cryptochlorogenic acid Unknown 4-O-Caffeoylquinic acid Cynarin(e) Panizzi et al. (1954)7,8 1,3-O-Dicaffeoylquinic acid Rapidly formed from 1,5-I-dicaffeoylquinic acid in aqueous media Dactylifric acid Maier et al. (1964)9 5-O-Caffeoylshikimic acid Dattelic acid Wada et al. (1988)10 5-O-Caffeoylshikimic acid Hauschild’s substance Hauschild (1935)11 3-Caffeoylquinic-1,5-γ-lactone Rapidly formed from 1,5-dicaffeoylquinic acid in aqueous media Irbic acid Antognoni et al. (2011)12 3,5-O-Dicaffeoyl-4-O-malonoyl-quinic acid This name was applied first to a compound isolated from cultured cells of Centella asiatica but subsequently found in the whole plant.13,14 This compound had been known from at least 2007.15 Isochlorogenic acid Barnes et al. (1950)16 A mixture of at least three dicaffeoylquinic acids Originally described as 5-O-caffeoylquinic acid using non-IUPAC numbering, contaminated with the associated lactone. Prefix ‘iso’ used to indicate ‘isomer’. The two research groups used the descriptors a, b and c, or A, B and C, differently and it is thus very difficult to tell which letter applies to which regio-isomer in later usage. As Isochlorogenic acid a, b and c, or A, B 17 Scarpati and Guiso (1964) Coffee bean dicaffeoylquinic acids originally published A = c = 3,4-O-diCQA, and C and C Corse et al. (1965)18 = b = 3,5-O-diCQA IUPAC. Logically B = a = 4,5- O-diCQA IUPAC but there remains an unexplained difference in specific rotation of the two isolates.17 Note that the term ‘macranthoin’ refers to Methyl-4,5-O-dicaffeoylquinate and methyl 3,5- Macranthoin F and G Chen et al. (1994)19 constituents of Lonicera macranthoides dicaffeoylquinate, respectively regardless of whether or not they are chlorogenic acids. Mumeic acid Nakamura et al. (2013)20 4-Benzoyl-5-O-caffeoylquinic acid n-Chlorogenic acid Maier and Grimsehl (1982)21 5-O-Caffeoylquinic acid Prefix ‘n’ used to distinguish 5-O-caffeoylquinic acid from total chlorogenic acids Neochlorogenic acid Corse (1953)22 3-O-Caffeoylquinic acid Neochlorogenic acid Reported in Origanum vulgare L. Biosynthetic Derivatives of 1,3,4,5- and 1,3,5,6-tetra-carboxy- Origanine A–C Liu et al. (2012)23 origin unknown and possibly different from (– shikimic acid )-quinic and (–)-shikimic acids. Term applied to some galloylquinic acids of Pistafolins Hou et al. (2000)24 Galloylquinic acid depsides Pistacia lentiscus Some close relatives, such as di- Podospermic acid Zidorn et al. (2005)25 1,3,5-O-tri-dihydrocaffeoylquinic acids dihydrocaffeoyl-feruloylquinic acids, may also be included in the trivial name.26 Probably the original isolate was a poorly Pseudochlorogenic acid Uritani and Miyano (1955)27 1-O-Caffeoylquinic acid defined mixture of caffeoylquinic and dicaffeoylquinic acids Salicornate Kim et al. (2011)28 Methyl-4-O-caffeoyl-3-dihydrocaffeoyl-quinate Theogallin Roberts (1958)29 5-Galloylquinic acid Tuntungmadic acid Chung et al. (2005)30 4-O-Dihydrocaffeoyl-5-O-caffeoylquinic acid 5-O-Caffeoyl-[4-(1β-[6-(5-O-caffeoyl) quinate]gluco-pyranosyl)]quinic acid and 3-O- Viarum acids Wu et al. (2012)31 malonyl-5-O-caffeoyl-[4-(1β-[6-(5-O-caffeoyl)- quinate]gluco-pyranosyl)]quinic acid aReproduced with permission of the American Chemical Society Supplementary Table S2 An unambiguous nomenclature for the acyl-quinic acids commonly known as chlorogenic acids.a1 CIPb description and 2D structure using recommended Fischer–Tollens the recommended 2D structures for individual isomers drawn from Isomer description1 structure convention Conformers four different perspectives 1L-(–)-quinic acid 1R, 3R, 4S, 5R OH OH 1 3 1R HOOC HOOC OH 1R or 5 HO COOH OH 5R 3R, 5R-(1α, 3α, HO 4 3R 5R 3R HO OH HO OH 4α, 5β) OH Upper structure with equatorial OH OH HO COOH 2 4S 4S 1 1 COOH and axial 4H as shown in 180 deg COOH OH 2 Corse and Lundin.33 6 3 1R 1R 3 HO COOH HOOC OH HO 5 OH OH 4 The lower carboxy equatorial HO 5 4 structure is preferred.1 3R 5R 5R 3R OH HO OH HO OH OH OH OH OH 4S 4S HO 1 3 4 5 COOH OH 1D-(+)-quinic acid 1S, 3S, 4R, 5S OH 1 5 OH 1S 1S or HOOC OH HOOC OH HO COOH OH 3 3S, 5S-(1α, 3α, 4 5S 3S 3S 5S HO OH HO OH 4α, 5β) OH HOOC OH 6 Upper structure with equatorial OH OH 1 1 4R 4R 2 COOH COOH and axial 4H. 180 deg 2 3 5 5 OH HO The lower carboxy equatorial 1S 1S OH OHOH HO COOH HOOC OH 4 1 OH 3 4 structure is preferred. 5S 3S 3S 5S OH HO OH HO OH 5 4 OH OH HO 1 OH OH 4R 4R COOH 3 1L-(–)-epi-quinic 1R, 3R, 4S, 5R OH 4 acid (derived OH 1 3 1R 1R from 1L-(–)-quinic or HO HOOC OH HO COOH acid by 4-OH COOH 5 3R, 5R-(1α, 3α, OH 5R 5R 3R inversion) 3R 4β, 5β) OH HO OH HO OH Upper structure with equatorial HO COOH 1 2 OH OH 1 OH COOH and axial 4H. 4S 2 COOH 4S 180 deg 6 3 3 5 The lower carboxy equatorial HO OH 1R 1R 4 structure is preferred.1 HO COOH HOOC OH OH 5 4 OH OH OH OH 3R 5R 5R 3R 1 3 HO OH HO OH HOOC 5 OH OH 4S 4 4S HO OH 1D-(+)-epi-quinic 1S, 3S, 4R, 5S 5 4 1S 1S acid (derived OH HOOC OH HO COOH HO 1 OH from 1D-(+)- or OH 3 5S 3S 3S 5S quinic acid by 4- COOH 3S, 5S-(1α, 3α, OH HO OH HO OH OH inversion) HOOC OH 6 4β, 5β) 1 1 or OH OH 4R 2 COOH 4R 180 deg 2 5 OH 3 5 1S 1S OH HO OH OH 1 5 HO COOH HOOC OH 4 HOOC OH HO 3 4 OH OH 4 5S 3S 3S 5S 3 HO OH HO OH OH OH OH 4R Carboxy axial preferred.1 Muco-quinic acid 1S, 3S, 4R, 5R OH 1 3 HOOC OH (derived from 1L- or 5 OH 1S 1S (–)-quinic acid by HOOC OH HO COOH HO 4 3-OH inversion) 3S, 5R (1α, 3β, OH 3 or 5S 5 or 3R S meso form 4α, 5β) R HO COOH 2 HO OH HO OH 1 1 COOH OH OH 2 180 deg 6 3 or 4R 3 5 OH OH OHOH 1S 4 OH 1S HOOC OH HO 5 4 3 HO COOH OH 4 1 HO OH S R R S 5 HO OH HO OH COOH OH OH OH Carboxy equatorial preferred.1 Cis-quinic acid 1R, 3R, 4S, 5S OH OH 1R 1 3 1R HO COOH OH HOOC OH (derived from 1L- or HOOC OH (–)-quinic acid by 3 or 5R 5 or 3S S R 5 4 5-OH inversion) 3R, 5S (1α, 3α, OH HO OH HO OH HO COOH OH meso form 4α, 5α) 1 1 2 OH or 4S 2 COOH OH 4S 180 deg 3 6 3 HO HO 5 OH 1R OH OH 3 OH HO1R COOH HOOC OH 4 4 HO 5 4 1 HO OH R S S R HO OH COOH 5 HO OH OH OH 4S Carboxy axial preferred.1 Neo-quinic acid 1S, 3S, 4S, 5R OH 3 1S 1S 1 HOOC OH HO COOH HOOC OH (derived from 1L- or 5 3 or 5S S (–)-quinic acid by 4 5 or 3R R 3S, 5R (1α, 3β, OH HO HO OH HO OH 3-OH and 4-OH OH HO COOH 2 inversion) meso 4β, 5β) 1 1 OH OH COOH 4S 4S form 2 or 180 deg 6 3 3 1S OH 5 OH OH 1S HOOC OH 4 3 4 HO COOH OH 5 4 1 OH OH OH HO OH S R R S 5 HO OH HO OH COOH OH OH OH 4S 4S Carboxy axial preferred.1 Scyllo-quinic acid 1R, 3R, 4R, 5S OH OH 1R 1R HOOC OH HO COOH 1 3 (derived from 1L- or HOOC OH 3 or 5S 5 or 3R S R (–)-quinic acid by OH 5 4 HO OH HO OH 4-OH and 5-OH 3R, 5S (1α, 3α, HO COOH OH OH 4β, 5α) 1 2 OH inversion) 1 4R COOH OH 4R 2 or 180 deg 6 3 meso form 3 5 HO HO OH 1R 1R 4 3 OH 4 HO COOH HOOC OH OH 5 4 OH OH 1 HO HO S R COOH 5 HO OH HO OH OH OH Carboxy equatorial preferred.1 4R 4R aReproduced with permission of the American Chemical Society bCIP - Cahn-Ingold-Prelog34 References 1 L.
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