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Abietane Diterpenes of the Genus Plectranthus sensu lato. Molecules 2021; 27:molecules27010166. [PMID: 35011401 PMCID: PMC8746610 DOI: 10.3390/molecules27010166] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Revised: 12/13/2021] [Accepted: 12/16/2021] [Indexed: 12/20/2022] Open
Abstract
Plectranthus (Lamiaceae), which—according to the latest systematic revision—includes three separate genera (Coleus, Plectranthus sensu stricto, and Equilabium), is a genus widely used in traditional medicine—mainly in the treatment of various ailments of the digestive tract, respiratory tract, and skin. Many species of Plectranthus s.l. have been shown to produce phenolic compounds and terpenes. Diterpenes, especially those of the abietane class, are the most studied group of secondary metabolites found in Plectranthus s.l., which is characterized by a significant structural diversity arising from the oxygenation and further rearrangement of the basic tricyclic abietane skeleton to a complete aromatization of the ring system. This review summarizes the known information on abietane diterpenes, showing their structures, sources, and biosynthesis. A classification of these compounds into nine groups, according to the arrangement of their ring C, is used. Royleanones, spirocoleons, and hydroquinones are the largest classes of abietane diterpenes, covering more than 70% of all the compounds reviewed.
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Cretton S, Saraux N, Monteillier A, Righi D, Marcourt L, Genta-Jouve G, Wolfender JL, Cuendet M, Christen P. Anti-inflammatory and antiproliferative diterpenoids from Plectranthus scutellarioides. PHYTOCHEMISTRY 2018; 154:39-46. [PMID: 29960256 DOI: 10.1016/j.phytochem.2018.06.012] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Revised: 06/14/2018] [Accepted: 06/18/2018] [Indexed: 05/11/2023]
Abstract
Chemical investigation of the dichloromethane extract of the aerial parts of Plectranthus scutellarioides led to the isolation and characterization of 10 diterpenoids with an abietane skeleton and one cembrane-type diterpenoid. Among them, six have not yet been described in the literature. Their structures were established by 1D and 2D NMR, UV and IR spectroscopy, and HRESIMS. The relative configuration was determined by Gauge-Independent Atomic Orbital NMR chemical shift calculations supported by the advanced statistical method DP4 plus and further confirmed by electronic circular dichroism. The isolated constituents were evaluated for their in vitro NF-κB inhibitory activity, as well as for their cytotoxic effects in human multiple myeloma cancer stem cells and RPMI 8226 tumor cell line. Coleon O, coleon G, lanugone K and 6-acetylfredericone B showed the highest inhibitory effect against NF-κB, displaying IC50 of 11.2, 11.0, 4.5 and 9.7 μM, respectively. Coleon O exhibited also a significant activity towards human multiple myeloma cancer stem cells and RPMI 8226 cells with IC50 of 9.2 and 8.4 μM, respectively.
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MESH Headings
- Abietanes/chemistry
- Abietanes/isolation & purification
- Abietanes/pharmacology
- Anti-Inflammatory Agents, Non-Steroidal/chemistry
- Anti-Inflammatory Agents, Non-Steroidal/isolation & purification
- Anti-Inflammatory Agents, Non-Steroidal/pharmacology
- Antineoplastic Agents, Phytogenic/chemistry
- Antineoplastic Agents, Phytogenic/isolation & purification
- Antineoplastic Agents, Phytogenic/pharmacology
- Cell Line, Tumor
- Cell Proliferation/drug effects
- Dose-Response Relationship, Drug
- Drug Screening Assays, Antitumor
- HEK293 Cells
- Humans
- Molecular Conformation
- NF-kappa B/antagonists & inhibitors
- NF-kappa B/metabolism
- Plant Components, Aerial/chemistry
- Plectranthus/chemistry
- Structure-Activity Relationship
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Affiliation(s)
- Sylvian Cretton
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Rue Michel-Servet 1, 1211 Geneva 4, Switzerland
| | - Noémie Saraux
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Rue Michel-Servet 1, 1211 Geneva 4, Switzerland
| | - Aymeric Monteillier
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Rue Michel-Servet 1, 1211 Geneva 4, Switzerland
| | - Davide Righi
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Rue Michel-Servet 1, 1211 Geneva 4, Switzerland
| | - Laurence Marcourt
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Rue Michel-Servet 1, 1211 Geneva 4, Switzerland
| | - Grégory Genta-Jouve
- C-TAC, UMR 8638 CNRS, Université Paris Descartes, Sorbonne Paris Cité, Faculté de Pharmacie de Paris, Avenue de l'Observatoire 4, 75006 Paris, France
| | - Jean-Luc Wolfender
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Rue Michel-Servet 1, 1211 Geneva 4, Switzerland
| | - Muriel Cuendet
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Rue Michel-Servet 1, 1211 Geneva 4, Switzerland
| | - Philippe Christen
- School of Pharmaceutical Sciences, University of Geneva, University of Lausanne, Rue Michel-Servet 1, 1211 Geneva 4, Switzerland.
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Lukhoba CW, Simmonds MSJ, Paton AJ. Plectranthus: a review of ethnobotanical uses. JOURNAL OF ETHNOPHARMACOLOGY 2006; 103:1-24. [PMID: 16289602 DOI: 10.1016/j.jep.2005.09.011] [Citation(s) in RCA: 218] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2005] [Revised: 09/07/2005] [Accepted: 09/08/2005] [Indexed: 05/05/2023]
Abstract
Plectranthus is a large and widespread genus with a diversity of ethnobotanical uses. The genus is plagued with numerous nomenclatural disharmonies that make it difficult to collate accurate data on the uses. The aim of this review is to gather together all ethnobotanical information on Plectranthus and to map the data onto the most up-to-date phylogenetic classification in order to see if there are similar uses among related species and hence provide a framework for the prediction and exploration of new uses of species. The uses of 62 species of Plectranthus were mapped onto a current phylogeny based on DNA sequence data. The phylogeny reveals two major Clades, 1 and 2. The members of Clade 1 (corresponding to the formally recognized genus Coleus) were richer in number and diversity of uses than members of Clade 2 (comprising the remaining species of Plectranthus). The high incidence of synonymy can lead to problems in uncovering a species' ethnobotanical profile. About 30% of all citations of Plectranthus use a synonym and most of the synonyms are attributed to 10 of the most used species, 9 of which are in Clade 1. Members of the 'Coleus' Clade are the most studied group both taxonomically and economically. The higher incidence of study may be as a result of the higher diversity of uses and the fact that species in Clade 1, such as Plectranthus barbatus, Plectranthus amboinicus and Plectranthus mollis, are geographically more widespread than those in Clade 2. Plectranthus species in Clade 1 are frequently used as medicines and are used to treat a range of ailments, particularly digestive, skin, infective and respiratory problems. Plectranthus used as foods, flavours, fodder and materials are also mostly found in Clade 1. Monoterpenoids, sesquiterpenoids, diterpenoids and phenolics have been reported in species of Plectranthus. The abietane diterpenoids are the most diverse of the diterpenoids isolated from species of Plectranthus. The labdane diterpenoid, forskolin, occurs in Plectranthus barbatus and could explain some of the traditional uses of this species. This review highlights the fact that not enough is known about the chemistry of other species of Plectranthus to explain their traditional uses.
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Alder AC, Rüedi P, Prewo R, Bieri JH, Eugster CH. Neue Diterpenoide aus Blattdrüsen einerPlectranthus sp.aus Rwanda. Helv Chim Acta 2004. [DOI: 10.1002/hlca.19860690613] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Isolierung und Strukturaufklärung von 36 Diterpenoiden aus Trichomen vonPlectranthus edulis(VATKE) T.T. AYE. Helv Chim Acta 2004. [DOI: 10.1002/hlca.19870700726] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Buss P, Prewo R, Bieri JH, Rüedi P. Der Sterische Verlauf der nucleophilen Cyclopropanöffnung an den vier im Spiro(methylcyclopropan)-Ring Diastereoisomeren Lanugonen J (Spirocoleonen). Helv Chim Acta 2004. [DOI: 10.1002/hlca.19860690227] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Grob K, Rüedi P, Eugster CH. Drüsenfarbstoffe aus Labiaten: Strukturen von 16 Diterpenen (Coleone und Royleanone) ausColeus coerulescensGÜRKE. Helv Chim Acta 2004. [DOI: 10.1002/hlca.19780610235] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Miyase T, Rüedi P, Eugster CH. Diterpenoide Drüsenfarbstoffe aus Labiaten: Coleone U, V, W und 14-O-Formyl-coleon-V sowie 2 Royleanone ausPlectranthus myrianthusBRIQ.;cis- undtrans-A/B-6, 7-Dioxoroyleanon. Helv Chim Acta 2004. [DOI: 10.1002/hlca.19770600830] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Matloubi-Moghadam F, Rüedi P, Eugster CH. Neue Coleone und Royleanone ausColeus somaliensisS. MOORE. Helv Chim Acta 2004. [DOI: 10.1002/hlca.19840670125] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Rüedi P, Schmid JM, Prewo R, Bieri JH, Eugster CH. Spirocoleone: Synthese und Charakterisierung von vier diastereomeren Spiro (methylcyclopropan)-Substrukturen; Revision der Konfiguration an C(12) und C(15) von Coleon P und Derivaten sowie von Coleon-Z-Derivaten; Röntgenstrukturanalysen von Lanugon J und. Helv Chim Acta 2004. [DOI: 10.1002/hlca.19830660205] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Moir M, Rüedi P, Eugster CH. Diterpenoid Hydroquinones fromColeus Somaliensis(S. Moore): Coleons H, I, and K. Helv Chim Acta 2004. [DOI: 10.1002/hlca.19730560737] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Arihara S, Räedi P, Eugster CH. Neuespiro-Cyclopropyl-cyclohexendion-Diterpene: Coleone M, N, P, Q, R sowie Barbatusin ausPlectranthus caninusROTHund Coleon O ausColeus somaliensisS. MOORE. Helv Chim Acta 2004. [DOI: 10.1002/hlca.19750580203] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Rüedi P, Schmid JM, Eugster CH. Nachweis von C (15)-epimeren Coleonen C und D in der Natur und ihre Bedeutung für den sterischen Verlauf der Bildung des Spirocyclopropanrings. Helv Chim Acta 2004. [DOI: 10.1002/hlca.19820650723] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Miyase T, Yoshizaki F, Kabengele N, Rüedi P, Eugster CH. Strukturen von 13 Diterpenen (Coleonen) aus Blattdrüsen vonSolenostemon sylvaticusundColeus garckeanus (Labiatae). Helv Chim Acta 2004. [DOI: 10.1002/hlca.19790620734] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Zhu ZY, Nayeshiro H, Prewo R, Rüedi P, Eugster CH. Fredericone, neue hochfunktionalisierte Abietanoide aus Blattdrüsen vonColeus fredericiiG. TAYL. Helv Chim Acta 2004. [DOI: 10.1002/hlca.19880710310] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Bhat S, Bajqwa B, Dornauer H, do Scusa N, Fehlhaber HW. Structures and stereochemistry of new labdane diterpiniods from coleus forskohlii briq. Tetrahedron Lett 1977. [DOI: 10.1016/s0040-4039(01)93245-9] [Citation(s) in RCA: 213] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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