1
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Chlorophyll breakdown during fruit ripening: Qualitative analysis of phyllobilins in the peel of apples (Malus domestica Borkh.) cv. ‘Gala’ during different shelf life stages. Food Res Int 2022; 162:112061. [DOI: 10.1016/j.foodres.2022.112061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 09/20/2022] [Accepted: 10/15/2022] [Indexed: 11/24/2022]
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2
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Karg CA, Wang S, Al Danaf N, Pemberton RP, Bernard D, Kretschmer M, Schneider S, Zisis T, Vollmar AM, Lamb DC, Zahler S, Moser S. Tetrapyrrolische Pigmente aus dem Häm‐ und Chlorophyllabbau interagieren mit Aktin. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202107813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Cornelia A. Karg
- Pharmazeutische Biologie Department Pharmazie Ludwig-Maximilians-Universität München Butenandtstraße 5–13 81377 München Deutschland
| | - Shuaijun Wang
- Pharmazeutische Biologie Department Pharmazie Ludwig-Maximilians-Universität München Butenandtstraße 5–13 81377 München Deutschland
| | - Nader Al Danaf
- Center for Nanoscience (CeNS) und Nanosystems Initiative Munich (NIM) Department Chemie Ludwig-Maximilians-Universität München Butenandtstraße 5–13 81377 München Deutschland
| | - Ryan P. Pemberton
- Atomwise Inc. 717 Market Street, Suite 800 San Francisco CA 94103 USA
| | - Denzil Bernard
- Atomwise Inc. 717 Market Street, Suite 800 San Francisco CA 94103 USA
| | - Maibritt Kretschmer
- Pharmazeutische Biologie Department Pharmazie Ludwig-Maximilians-Universität München Butenandtstraße 5–13 81377 München Deutschland
| | - Sabine Schneider
- Department Chemie Ludwig-Maximilians-Universität München Butenandtstraße 5–13 81377 München Deutschland
| | - Themistoklis Zisis
- Pharmazeutische Biologie Department Pharmazie Ludwig-Maximilians-Universität München Butenandtstraße 5–13 81377 München Deutschland
| | - Angelika M. Vollmar
- Pharmazeutische Biologie Department Pharmazie Ludwig-Maximilians-Universität München Butenandtstraße 5–13 81377 München Deutschland
| | - Don C. Lamb
- Center for Nanoscience (CeNS) und Nanosystems Initiative Munich (NIM) Department Chemie Ludwig-Maximilians-Universität München Butenandtstraße 5–13 81377 München Deutschland
| | - Stefan Zahler
- Pharmazeutische Biologie Department Pharmazie Ludwig-Maximilians-Universität München Butenandtstraße 5–13 81377 München Deutschland
| | - Simone Moser
- Pharmazeutische Biologie Department Pharmazie Ludwig-Maximilians-Universität München Butenandtstraße 5–13 81377 München Deutschland
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3
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Karg CA, Wang S, Al Danaf N, Pemberton RP, Bernard D, Kretschmer M, Schneider S, Zisis T, Vollmar AM, Lamb DC, Zahler S, Moser S. Tetrapyrrolic Pigments from Heme- and Chlorophyll Breakdown are Actin-Targeting Compounds. Angew Chem Int Ed Engl 2021; 60:22578-22584. [PMID: 34310831 PMCID: PMC8519017 DOI: 10.1002/anie.202107813] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Revised: 07/22/2021] [Indexed: 11/11/2022]
Abstract
Chlorophyll and heme are among the "pigments of life", tetrapyrrolic structures, without which life on Earth would not be possible. Their catabolites, the phyllobilins and the bilins, respectively, share not only structural features, but also a similar story: Long considered waste products of detoxification processes, important bioactivities for both classes have now been demonstrated. For phyllobilins, however, research on physiological roles is sparse. Here, we introduce actin, the major component of the cytoskeleton, as the first discovered target of phyllobilins and as a novel target of bilins. We demonstrate the inhibition of actin dynamics in vitro and effects on actin and related processes in cancer cells. A direct interaction with G-actin is shown by in silico studies and confirmed by affinity chromatography. Our findings open a new chapter in bioactivities of tetrapyrroles-especially phyllobilins-for which they form the basis for broad implications in plant science, ecology, and physiology.
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Affiliation(s)
- Cornelia A. Karg
- Pharmaceutical BiologyDepartment of PharmacyLudwig-Maximilians University of MunichButenandtstraße 5–1381377MunichGermany
| | - Shuaijun Wang
- Pharmaceutical BiologyDepartment of PharmacyLudwig-Maximilians University of MunichButenandtstraße 5–1381377MunichGermany
| | - Nader Al Danaf
- Center for Nanoscience (CeNS) and Nanosystems Initiative Munich (NIM)Department of ChemistryLudwig-Maximilians University of MunichButenandtstraße 5–1381377MunichGermany
| | | | - Denzil Bernard
- Atomwise Inc.717 Market Street, Suite 800San FranciscoCA94103USA
| | - Maibritt Kretschmer
- Pharmaceutical BiologyDepartment of PharmacyLudwig-Maximilians University of MunichButenandtstraße 5–1381377MunichGermany
| | - Sabine Schneider
- Department of ChemistryLudwig-Maximilians University MunichButenandtstrasse 5–1381377MunichGermany
| | - Themistoklis Zisis
- Pharmaceutical BiologyDepartment of PharmacyLudwig-Maximilians University of MunichButenandtstraße 5–1381377MunichGermany
| | - Angelika M. Vollmar
- Pharmaceutical BiologyDepartment of PharmacyLudwig-Maximilians University of MunichButenandtstraße 5–1381377MunichGermany
| | - Don C. Lamb
- Center for Nanoscience (CeNS) and Nanosystems Initiative Munich (NIM)Department of ChemistryLudwig-Maximilians University of MunichButenandtstraße 5–1381377MunichGermany
| | - Stefan Zahler
- Pharmaceutical BiologyDepartment of PharmacyLudwig-Maximilians University of MunichButenandtstraße 5–1381377MunichGermany
| | - Simone Moser
- Pharmaceutical BiologyDepartment of PharmacyLudwig-Maximilians University of MunichButenandtstraße 5–1381377MunichGermany
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4
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Li C, Podewitz M, Kräutler B. A Blue Zinc Complex of a Dioxobilin‐Type Pink Chlorophyll Catabolite Exhibiting Bright Chelation‐Enhanced Red Fluorescence. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100206] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Chengjie Li
- Institute of Organic Chemistry University of Innsbruck Innrain 80/82 6020 Innsbruck Austria
- Center of Molecular Biosciences University of Innsbruck (CMBI) Innrain 80/82 6020 Innsbruck Austria
- Present address: Key Laboratory for Advanced Materials and Institute of Fine Chemicals School of Chemistry & Molecular Engineering East China University of Science & Technology Meilong Rd 130 200237 Shanghai China
| | - Maren Podewitz
- Center of Molecular Biosciences University of Innsbruck (CMBI) Innrain 80/82 6020 Innsbruck Austria
- Institute of General Inorganic and Theoretical Chemistry University of Innsbruck Innrain 80/82 6020 Innsbruck Austria
| | - Bernhard Kräutler
- Institute of Organic Chemistry University of Innsbruck Innrain 80/82 6020 Innsbruck Austria
- Center of Molecular Biosciences University of Innsbruck (CMBI) Innrain 80/82 6020 Innsbruck Austria
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5
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Karg CA, Wang P, Kluibenschedl F, Müller T, Allmendinger L, Vollmar AM, Moser S. Phylloxanthobilins are Abundant Linear Tetrapyrroles from Chlorophyll Breakdown with Activities Against Cancer Cells. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000692] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Cornelia A. Karg
- Pharmaceutical Biology Pharmacy Department Ludwig‐Maximilians University of Munich Butenandtstraße 5‐13 81377 Munich Germany
| | - Pengyu Wang
- Pharmaceutical Biology Pharmacy Department Ludwig‐Maximilians University of Munich Butenandtstraße 5‐13 81377 Munich Germany
| | - Florian Kluibenschedl
- Institute of Organic Chemistry University of Innsbruck Innrain 80‐82 6020 Innsbruck Austria
| | - Thomas Müller
- Institute of Organic Chemistry University of Innsbruck Innrain 80‐82 6020 Innsbruck Austria
| | - Lars Allmendinger
- Pharmaceutical Chemistry Pharmacy Department Ludwig‐Maximilians University of Munich Butenandtstraße 5‐13 81377 Munich Germany
| | - Angelika M. Vollmar
- Pharmaceutical Biology Pharmacy Department Ludwig‐Maximilians University of Munich Butenandtstraße 5‐13 81377 Munich Germany
| | - Simone Moser
- Pharmaceutical Biology Pharmacy Department Ludwig‐Maximilians University of Munich Butenandtstraße 5‐13 81377 Munich Germany
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6
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Brückner C, Atoyebi AO, Girouard D, Lau KSF, Akhigbe J, Samankumara L, Damunupola D, Khalil GE, Gouterman M, Krause JA, Zeller M. Stepwise Preparation of
meso
‐Tetraphenyl‐ and
meso
‐Tetrakis(4‐trifluoromethylphenyl)bacteriodilactones and their Zinc(II) and Palladium(II) Complexes. European J Org Chem 2020. [DOI: 10.1002/ejoc.201901727] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Christian Brückner
- Department of Chemistry University of Connecticut 06268‐3060 Storrs CT USA
| | - Adewole O. Atoyebi
- Department of Chemistry University of Connecticut 06268‐3060 Storrs CT USA
| | - Derek Girouard
- Department of Chemistry University of Connecticut 06268‐3060 Storrs CT USA
| | - Kimberly S. F. Lau
- Department of Chemistry University of Connecticut 06268‐3060 Storrs CT USA
- Department of Chemistry University of Washington 98195 Seattle WA USA
| | - Joshua Akhigbe
- Department of Chemistry University of Connecticut 06268‐3060 Storrs CT USA
| | - Lalith Samankumara
- Department of Chemistry University of Connecticut 06268‐3060 Storrs CT USA
| | - Dinusha Damunupola
- Department of Chemistry University of Connecticut 06268‐3060 Storrs CT USA
| | - Gamal E. Khalil
- Department of Chemistry University of Washington 98195 Seattle WA USA
| | - Martin Gouterman
- Department of Chemistry University of Washington 98195 Seattle WA USA
| | - Jeanette A. Krause
- Department of Chemistry University of Cincinnati 45221‐0172 Cincinnati OH USA
| | - Matthias Zeller
- Department of Chemistry Purdue University 47907‐2084 West Lafayette IN USA
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7
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Moser S, Kräutler B. In Search of Bioactivity - Phyllobilins, an Unexplored Class of Abundant Heterocyclic Plant Metabolites from Breakdown of Chlorophyll. Isr J Chem 2019; 59:420-431. [PMID: 31244492 PMCID: PMC6582504 DOI: 10.1002/ijch.201900012] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 03/30/2019] [Accepted: 03/31/2019] [Indexed: 12/04/2022]
Abstract
The fate of the green plant pigment chlorophyll (Chl) in de-greening leaves has long been a fascinating biological puzzle. In the course of the last three decades, various bilin-type products of Chl breakdown have been identified, named phyllobilins (PBs). Considered 'mere' leftovers of a controlled biological Chl detoxification originally, the quest for finding relevant bioactivities of the PBs has become a new paradigm. Indeed, the PBs are abundant in senescent leaves, in ripe fruit and in some vegetables, and they display an exciting array of diverse heterocyclic structures. This review outlines briefly which types of Chl breakdown products occur in higher plants, describes basics of their bio-relevant structural and chemical properties and gives suggestions as to 'why' the plants produce vast amounts of uniquely 'decorated' heterocyclic compounds. Clearly, it is worthwhile to consider crucial metabolic roles of PBs in plants, which may have practical consequences in agriculture and horticulture. However, PBs are also part of our plant-based nutrition and their physiological and pharmacological effects in humans are of interest, as well.
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Affiliation(s)
- Simone Moser
- Pharmaceutical Biology, Pharmacy DepartmentLudwig-Maximilians University of MunichButenandtstraße 5–1381377MunichGermany
| | - Bernhard Kräutler
- Institute of Organic Chemistry and Centre of Molecular BiosciencesUniversity of Innsbruck. Innrain 80/826020InnsbruckAustria
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8
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Li C, Erhart T, Liu X, Kräutler B. Yellow Dioxobilin-Type Tetrapyrroles from Chlorophyll Breakdown in Higher Plants-A New Class of Colored Phyllobilins. Chemistry 2019; 25:4052-4057. [PMID: 30688378 PMCID: PMC6563717 DOI: 10.1002/chem.201806038] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Indexed: 11/11/2022]
Abstract
In senescent leaves chlorophyll (Chl) catabolites typically accumulate as colorless tetrapyrroles, classified as formyloxobilin-type (or type-I) or dioxobilin-type (type-II) phyllobilins (PBs). Yellow type-I Chl catabolites (YCCs) also occur in some senescent leaves, in which they are generated by oxidation of colorless type-I PBs. A yellow type-II PB was recently proposed to occur in extracts of fall leaves of grapevine (Vitis vinifera), tentatively identified by its mass and UV/Vis absorption characteristics. Here, the first synthesis of a yellow type-II Chl catabolite (DYCC) from its presumed natural colorless type-II precursor is reported. A homogenate of a Spatiphyllum wallisii leaf was used as "green" means of effective and selective oxidation. The synthetic DYCC was fully characterized and identified with the yellow grapevine leaf pigment. As related yellow type-I PBs do, the DYCC functions as a reversible photoswitch by undergoing selective photo-induced Z/E isomerization of its C15=C16 bond.
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Affiliation(s)
- Chengjie Li
- Institute of Organic Chemistry & Centre of, Molecular Biosciences Innsbruck (CMBI)University of InnsbruckInnrain 80/826020InnsbruckAustria
- Present address: Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry & Molecular EngineeringEast China University of Science & TechnologyMeilong Rd 130200237ShanghaiChina
| | - Theresia Erhart
- Institute of Organic Chemistry & Centre of, Molecular Biosciences Innsbruck (CMBI)University of InnsbruckInnrain 80/826020InnsbruckAustria
| | - Xiujun Liu
- Institute of Organic Chemistry & Centre of, Molecular Biosciences Innsbruck (CMBI)University of InnsbruckInnrain 80/826020InnsbruckAustria
- Present address: Research Center of Analysis and TestEast China University of Science & TechnologyMeilong Rd 130200237ShanghaiChina
| | - Bernhard Kräutler
- Institute of Organic Chemistry & Centre of, Molecular Biosciences Innsbruck (CMBI)University of InnsbruckInnrain 80/826020InnsbruckAustria
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9
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Erhart T, Mittelberger C, Liu X, Podewitz M, Li C, Scherzer G, Stoll G, Valls J, Robatscher P, Liedl KR, Oberhuber M, Kräutler B. Novel Types of Hypermodified Fluorescent Phyllobilins from Breakdown of Chlorophyll in Senescent Leaves of Grapevine (Vitis vinifera). Chemistry 2018; 24:17268-17279. [PMID: 30079972 PMCID: PMC6282590 DOI: 10.1002/chem.201803128] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Indexed: 01/04/2023]
Abstract
The tetrapyrrolic chlorophyll catabolites (or phyllobilins, PBs) were analyzed in yellow fall leaves of the grape Chardonnay, a common Vitis vinifera white wine cultivar. The major fractions in leaf extracts of V. vinifera, tentatively assigned to PBs, were isolated and their structures elucidated. The dominant fraction is a dioxobilin-type non-fluorescent Chl-catabolite of a previously observed type. Two less polar fluorescent PBs were characterized as a novel dioxobilin-type fluorescent Chl-catabolite with a bicyclo-1',6'-glycosyl architecture, and its new fluorescent formyloxobilin-type analogue. The discovery of persistent hypermodified fluorescent PBs with the architecture of bicyclo-[17.3.1]-PBs (bcPBs), suggests the activity of an unknown enzyme that forges the 20-membered macroring at the tetrapyrrolic core of a fluorescent PB. bcPBs may play specific physiological roles in grapevine plants and represent endogenous anti-infective agents, as found similarly for other organic bicyclo-[n.3.1]-1',6'-glycosyl derivatives.
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Affiliation(s)
- Theresia Erhart
- Institute of Organic Chemistry & Centre of Molecular BiosciencesUniversity of InnsbruckInnrain 80/826020InnsbruckAustria
| | | | - Xiujun Liu
- Institute of Organic Chemistry & Centre of Molecular BiosciencesUniversity of InnsbruckInnrain 80/826020InnsbruckAustria
- Present address: Research Center of Analysis and TestEast China University of Science & TechnologyMeilong Rd 130200237ShanghaiChina
| | - Maren Podewitz
- Institute of General, Inorganic and Theoretical Chemistry & Centre of, Molecular BiosciencesUniversity of InnsbruckInnrain 80/826020InnsbruckAustria
| | - Chengjie Li
- Institute of Organic Chemistry & Centre of Molecular BiosciencesUniversity of InnsbruckInnrain 80/826020InnsbruckAustria
- Present address: Key Laboratory for Advanced Materials & Institute of, Fine Chemicals, School of Chemistry & Molecular EngineeringEast China University of Science & TechnologyMeilong Rd 130200237ShanghaiChina
| | - Gerhard Scherzer
- Institute of Organic Chemistry & Centre of Molecular BiosciencesUniversity of InnsbruckInnrain 80/826020InnsbruckAustria
| | - Gertrud Stoll
- Laimburg Research CentreLaimburg 6-Pfatten (Vadena)39040Auer (Ora), BZItaly
| | - Josep Valls
- Laimburg Research CentreLaimburg 6-Pfatten (Vadena)39040Auer (Ora), BZItaly
- Present address: Faculté des Sciences Pharmaceutiques, Unité de Recherche Enologie EA 4577Université de Bordeaux33882Villenave d'OrnonFrance
| | - Peter Robatscher
- Laimburg Research CentreLaimburg 6-Pfatten (Vadena)39040Auer (Ora), BZItaly
| | - Klaus R. Liedl
- Institute of General, Inorganic and Theoretical Chemistry & Centre of, Molecular BiosciencesUniversity of InnsbruckInnrain 80/826020InnsbruckAustria
| | - Michael Oberhuber
- Laimburg Research CentreLaimburg 6-Pfatten (Vadena)39040Auer (Ora), BZItaly
| | - Bernhard Kräutler
- Institute of Organic Chemistry & Centre of Molecular BiosciencesUniversity of InnsbruckInnrain 80/826020InnsbruckAustria
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10
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Erhart T, Vergeiner S, Kreutz C, Kräutler B, Müller T. Chlorophyllabbau im Farn - Entdeckung von Phyllobilin-Isomeren mit umgelagertem Kohlenstoffgerüst. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201807818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Theresia Erhart
- Institut für Organische Chemie und Zentrum für, Molekulare Biowissenschaften (CMBI); Universität Innsbruck; Innrain 80-82 6020 Innsbruck Österreich
| | - Stefan Vergeiner
- Institut für Organische Chemie und Zentrum für, Molekulare Biowissenschaften (CMBI); Universität Innsbruck; Innrain 80-82 6020 Innsbruck Österreich
| | - Christoph Kreutz
- Institut für Organische Chemie und Zentrum für, Molekulare Biowissenschaften (CMBI); Universität Innsbruck; Innrain 80-82 6020 Innsbruck Österreich
| | - Bernhard Kräutler
- Institut für Organische Chemie und Zentrum für, Molekulare Biowissenschaften (CMBI); Universität Innsbruck; Innrain 80-82 6020 Innsbruck Österreich
| | - Thomas Müller
- Institut für Organische Chemie und Zentrum für, Molekulare Biowissenschaften (CMBI); Universität Innsbruck; Innrain 80-82 6020 Innsbruck Österreich
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11
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Erhart T, Vergeiner S, Kreutz C, Kräutler B, Müller T. Chlorophyll Breakdown in a Fern-Discovery of Phyllobilin Isomers with a Rearranged Carbon Skeleton. Angew Chem Int Ed Engl 2018; 57:14937-14941. [PMID: 30144281 PMCID: PMC6220952 DOI: 10.1002/anie.201807818] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Indexed: 11/29/2022]
Abstract
All structure-based information on chlorophyll (Chl) breakdown in the higher plants relies on studies with angiosperms. Herein, the first investigation of a fern is reported, revealing a novel type of Chl catabolites (phyllobilins) in leaves of this large division of the vascular plants, and providing structural insights into an astounding metabolic process of the higher plants that appears to have played a role even in early phases of plant evolution. The tetrapyrrolic Chl catabolites in the cosmopolitan bracken fern were discovered to be phyllobilin isomers with an unprecedented skeleton, proposed to be the striking result of a rearrangement of a hypothetical phyllobilin precursor.
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Affiliation(s)
- Theresia Erhart
- Institute of Organic Chemistry and Center for Molecular BiosciencesUniversity of InnsbruckInnrain 80–826020InnsbruckAustria
| | - Stefan Vergeiner
- Institute of Organic Chemistry and Center for Molecular BiosciencesUniversity of InnsbruckInnrain 80–826020InnsbruckAustria
| | - Christoph Kreutz
- Institute of Organic Chemistry and Center for Molecular BiosciencesUniversity of InnsbruckInnrain 80–826020InnsbruckAustria
| | - Bernhard Kräutler
- Institute of Organic Chemistry and Center for Molecular BiosciencesUniversity of InnsbruckInnrain 80–826020InnsbruckAustria
| | - Thomas Müller
- Institute of Organic Chemistry and Center for Molecular BiosciencesUniversity of InnsbruckInnrain 80–826020InnsbruckAustria
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12
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Li C, Wurst K, Kräutler B. A Dipyrrin Programmed for Covalent Loading with Fullerenes. Chemistry 2018; 24:10032-10037. [PMID: 29802661 PMCID: PMC6099335 DOI: 10.1002/chem.201801995] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2018] [Indexed: 01/24/2023]
Abstract
We describe here a di-(β,β'-sulfoleno)pyrrin programmed for efficient and specific β,β'-functionalization via [4+2] cycloaddition reactions. At 120 °C and in the presence of an excess of C60 -fullerene the di-(β,β'-sulfoleno)pyrrin decomposed cleanly, furnishing a di-(β,β'-fullereno)pyrrin and the corresponding monofullereno-dipyrrin in an overall yield of 96 %. Hence, relatively mild thermolysis of the di-(β,β'-sulfoleno)pyrrin induced stepwise extrusion of two equivalents of SO2 , producing highly reactive dipyrrin-β,β'-diene intermediates readily, providing a very effective path to [4+2]-cycloadducts. As presented here by the example of the covalent attachment of C60 -fullerene units, a convenient general methodology for the efficient synthesis of covalent dipyrrin β,β'-cycloadducts is made available.
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Affiliation(s)
- Chengjie Li
- Institute of Organic Chemistry and Centre of Molecular BiosciencesUniversity of InnsbruckInnrain 80/826020InnsbruckAustria
- Key Laboratory for Advanced Materials and Institute of Fine ChemicalsSchool of Chemistry & Molecular EngineeringEast China University of Science & TechnologyMeilong Rd 130200237ShanghaiChina
| | - Klaus Wurst
- Institute of General, Inorganic & Theoretical ChemistryUniversity of InnsbruckInnrain 80/826020InnsbruckAustria
| | - Bernhard Kräutler
- Institute of Organic Chemistry and Centre of Molecular BiosciencesUniversity of InnsbruckInnrain 80/826020InnsbruckAustria
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13
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Li C, Wurst K, Berghold J, Podewitz M, Liedl KR, Kräutler B. Pyro-Phyllobilins: Elusive Chlorophyll Catabolites Lacking a Critical Carboxylate Function of the Natural Chlorophylls. Chemistry 2018; 24:2987-2998. [PMID: 29244236 PMCID: PMC5861670 DOI: 10.1002/chem.201705331] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Indexed: 11/17/2022]
Abstract
A β-keto ester grouping is a characteristic of ring E of the chlorophylls (Chls). Its presence has also reinforced the original identification of nonfluorescent Chl catabolites (NCCs) as colorless, amphiphilic phyllobilins (PBs). Polar NCCs were also detected in higher plants, in which a free carboxyl group replaced the ring E ester group. Such NCCs are surprisingly resistant to loss of this carboxyl unit, and NCCs lacking the latter, that is, pyro-NCCs (pyNCCs), have not been reported. Intrigued by the question of the natural occurrence of pyro-phyllobilins (pyPBs), we have prepared a representative pyNCC by decarboxylation of a natural NCC. We also converted the pyNCC into its yellow oxidation product, a pyro-YCC (pyYCC). The solution structures of pyNCC and of pyYCC, and a crystal structure of the pyYCC methyl ester (pyYCC-Me) were obtained. pyYCC-Me features the same remarkable H-bonded and π-stacked dimer structure as the corresponding natural yellow Chl catabolite (YCC) with the ring E methyl ester group. Indeed, the latter substituent has little effect on the structure, as well as on the unique self-assembly and photoswitch behavior of yellow PBs.
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Affiliation(s)
- Chengjie Li
- Institute of Organic Chemistry and Centre of Molecular BiosciencesUniversity of InnsbruckInnrain 80/826020InnsbruckAustria
- Present address: Key Laboratory for Advanced Materials and Institute of, Fine ChemicalsSchool of Chemistry and Molecular EngineeringEast China University of Science and TechnologyMeilong Rd. 130200237ShanghaiP.R. China
| | - Klaus Wurst
- Institute of General, Inorganic and Theoretical ChemistryUniversity of InnsbruckInnrain 80/826020InnsbruckAustria
| | - Joachim Berghold
- Institute of Organic Chemistry and Centre of Molecular BiosciencesUniversity of InnsbruckInnrain 80/826020InnsbruckAustria
| | - Maren Podewitz
- Institute of General, Inorganic and Theoretical ChemistryUniversity of InnsbruckInnrain 80/826020InnsbruckAustria
| | - Klaus R. Liedl
- Institute of General, Inorganic and Theoretical ChemistryUniversity of InnsbruckInnrain 80/826020InnsbruckAustria
| | - Bernhard Kräutler
- Institute of Organic Chemistry and Centre of Molecular BiosciencesUniversity of InnsbruckInnrain 80/826020InnsbruckAustria
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Li C, Wurst K, Jockusch S, Gruber K, Podewitz M, Liedl KR, Kräutler B. Chlorophyll-Derived Yellow Phyllobilins of Higher Plants as Medium-Responsive Chiral Photoswitches. Angew Chem Int Ed Engl 2016; 55:15760-15765. [PMID: 27891749 PMCID: PMC5248603 DOI: 10.1002/anie.201609481] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Indexed: 11/20/2022]
Abstract
The fall colors are signs of chlorophyll breakdown, the biological process in plants that generates phyllobilins. Most of the abundant natural phyllobilins are colorless, but yellow phyllobilins (phylloxanthobilins) also occur in fall leaves. As shown here, phylloxanthobilins are unique four-stage photoswitches. Which switching mode is turned on is controlled by the molecular environment. In polar media, phylloxanthobilins are monomeric and undergo photoreversible Z/E isomerization, similar to that observed for bilirubin. Unlike bilirubin, however, the phylloxanthobilin Z isomers photodimerize in apolar solvents by regio- and stereospecific thermoreversible [2+2] cycloadditions from self-assembled hydrogen-bonded dimers. X-ray analysis revealed the first stereostructure of a phylloxanthobilin and its hydrogen-bonded self-templating architecture, helping to rationalize its exceptional photoswitch features. The chemical behavior of phylloxanthobilins will play a seminal role in identifying biological roles of phyllobilins.
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Affiliation(s)
- Chengjie Li
- Institute of Organic Chemistry and Centre of Molecular BiosciencesUniversity of Innsbruck6020InnsbruckAustria
| | - Klaus Wurst
- Institute of General, Inorganic & Theoretical ChemistryUniversity of InnsbruckAustria
| | | | - Karl Gruber
- Institute of Molecular BiosciencesUniversity of GrazAustria
| | - Maren Podewitz
- Institute of General, Inorganic & Theoretical Chemistry and Centre of Molecular BiosciencesUniversity of InnsbruckAustria
| | - Klaus R. Liedl
- Institute of General, Inorganic & Theoretical Chemistry and Centre of Molecular BiosciencesUniversity of InnsbruckAustria
| | - Bernhard Kräutler
- Institute of Organic Chemistry and Centre of Molecular BiosciencesUniversity of Innsbruck6020InnsbruckAustria
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15
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Li C, Wurst K, Jockusch S, Gruber K, Podewitz M, Liedl KR, Kräutler B. Von Chlorophyll abstammende gelbe Phyllobiline höherer Pflanzen als umgebungsgesteuerte, chirale Photoschalter. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201609481] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Chengjie Li
- Institut für Organische Chemie und Centrum für Molekulare Biowissenschaften; Universität Innsbruck; 6020 Innsbruck Österreich
| | - Klaus Wurst
- Institut für Allgemeine, Anorganische & Theoretische Chemie; Universität Innsbruck; Österreich
| | | | - Karl Gruber
- Institut für Molekulare Biowissenschaften; Universität Graz; Österreich
| | - Maren Podewitz
- Institut für Allgemeine, Anorganische & Theoretische Chemie und Centrum für Molekulare Biowissenschaften; Universität Innsbruck; Österreich
| | - Klaus R. Liedl
- Institut für Allgemeine, Anorganische & Theoretische Chemie und Centrum für Molekulare Biowissenschaften; Universität Innsbruck; Österreich
| | - Bernhard Kräutler
- Institut für Organische Chemie und Centrum für Molekulare Biowissenschaften; Universität Innsbruck; 6020 Innsbruck Österreich
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16
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Scherl M, Müller T, Kreutz CR, Huber RG, Zass E, Liedl KR, Kräutler B. Chlorophyll Catabolites in Fall Leaves of the Wych Elm Tree Present a Novel Glycosylation Motif. Chemistry 2016; 22:9498-503. [PMID: 27128523 PMCID: PMC5089558 DOI: 10.1002/chem.201601739] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Indexed: 12/23/2022]
Abstract
Fall leaves of the common wych elm tree (Ulmus glabra) were studied with respect to chlorophyll catabolites. Over a dozen colorless, non‐fluorescent chlorophyll catabolites (NCCs) and several yellow chlorophyll catabolites (YCCs) were identified tentatively. Three NCC fractions were isolated and their structures were characterized by spectroscopic means. Two of these, Ug‐NCC‐27 and Ug‐NCC‐43, carried a glucopyranosyl appendage. Ug‐NCC‐53, the least polar of these NCCs, was identified as the formal product of an intramolecular esterification of the propionate and primary glucopyranosyl hydroxyl groups of Ug‐NCC‐43. Thus, the glucopyranose moiety and three of the pyrrole units of Ug‐NCC‐53 span a 20‐membered ring, installing a bicyclo[17.3.1]glycoside moiety. This structural motif is unprecedented in heterocyclic natural products, according to a thorough literature search. The remarkable, three‐dimensional bicyclo[17.3.1]glycoside architecture reduces the flexibility of the linear tetrapyrrole. This feature of Ug‐NCC‐53 is intriguing, considering the diverse biological effects of known bicyclo[n.3.1]glycosidic natural products.
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Affiliation(s)
- Mathias Scherl
- Institute of Organic Chemistry and Center of Molecular Biosciences, University of Innsbruck, Innrain 80/82, 6020, Innsbruck, Austria
| | - Thomas Müller
- Institute of Organic Chemistry and Center of Molecular Biosciences, University of Innsbruck, Innrain 80/82, 6020, Innsbruck, Austria
| | - Christoph R Kreutz
- Institute of Organic Chemistry and Center of Molecular Biosciences, University of Innsbruck, Innrain 80/82, 6020, Innsbruck, Austria
| | - Roland G Huber
- Institute of General, Inorganic & Theoretical Chemistry and Center of Molecular Biosciences, University of Innsbruck, Innrain 80/82, 6020, Innsbruck, Austria.,Bioinformatics Institute, Agency for Science, Technology & Research, 30 Biopolis Street, 138671, Singapore, Singapore
| | - Engelbert Zass
- Laboratory of Organic Chemistry, ETH Zürich, Vladimir-Prelog-Weg 3, 8093, Zürich, Switzerland.
| | - Klaus R Liedl
- Institute of General, Inorganic & Theoretical Chemistry and Center of Molecular Biosciences, University of Innsbruck, Innrain 80/82, 6020, Innsbruck, Austria.
| | - Bernhard Kräutler
- Institute of Organic Chemistry and Center of Molecular Biosciences, University of Innsbruck, Innrain 80/82, 6020, Innsbruck, Austria.
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