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Symma N, Bütergerds M, Sendker J, Petereit F, Hake A, Düfer M, Hensel A. Novel Piperidine and 3,4-dihydro-2H-pyrrole Alkaloids from Tilia platyphyllos and Tilia cordata Flowers. PLANTA MEDICA 2021; 87:686-700. [PMID: 33434940 DOI: 10.1055/a-1340-0099] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Lime flowers, traditionally used for medical purposes for the treatment of symptoms of the common cold and mental stress, consist of the dried inflorescences including the floral bracts of Tilia cordata, Tilia platyphyllos, Tilia × vulgaris, or mixtures thereof. During phytochemical investigations, 6 different alkaloids - not described until now - were detected in T. cordata and T. platyphyllos flowers. They have been isolated and characterized as alkaloids with a dihydro-pyrrole and a piperidine substructure, respectively. Compounds 1A: and 1B: (tiliines A and B) are characterized as 2 diastereomers containing a 2-methyl-3,4-dihydro-2H-pyrrol-3-ol, connected via a C-10 alkyl chain to a O-glucosylated hydroquinone moiety. Compounds 2A: and 2B: (tiliamines A and B) are diastereomers of a 2-methyl-substituted piperidin-3-ol, coupled via a C-9 alkyl chain again to an O-glucosylated hydroquinone moiety. Compounds 3A: and 3B: (tilacetines A and B) are 3-O-acetylated derivatives of tiliamines. Quantification of the 6 alkaloids by HPLC-ESI-qTOF analysis indicated the presence of all alkaloids in T. cordata flowers and T. platyphyllos flowers, bracts, and leaves, with tiliines A and B and tilacetines A and B being the major compounds. Acetone/water turned out be the best extraction solvent for the alkaloids, but ethanol and ethanol/water mixtures also can be used for effective extraction. Furthermore, the alkaloids are found in hot water extracts, which are typically used in the traditional medicine.
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Affiliation(s)
- Nico Symma
- Institute of Pharmaceutical Biology and Phytochemistry, University of Münster, Münster, Germany
| | - Marek Bütergerds
- Institute of Pharmaceutical Biology and Phytochemistry, University of Münster, Münster, Germany
| | - Jandirk Sendker
- Institute of Pharmaceutical Biology and Phytochemistry, University of Münster, Münster, Germany
| | - Frank Petereit
- Institute of Pharmaceutical Biology and Phytochemistry, University of Münster, Münster, Germany
| | - Alexander Hake
- Institute of Pharmaceutical Biology and Phytochemistry, University of Münster, Münster, Germany
| | - Martina Düfer
- Institute of Pharmaceutical and Medicinal Chemistry-Pharmacology, University of Münster, Münster, Germany
| | - Andreas Hensel
- Institute of Pharmaceutical Biology and Phytochemistry, University of Münster, Münster, Germany
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Srivastava N, Macha L, Ha HJ. Stereoselective synthesis of 2,6-disubstituted piperidine alkaloids. Org Biomol Chem 2020; 18:5493-5512. [PMID: 32478370 DOI: 10.1039/d0ob00918k] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Among the large number of structurally diverse alkaloids, 2,6-disubstituted piperidine and its analogs have often been targeted when exploiting new synthetic techniques perhaps because of their strong pharmacological properties. This review outlines synthetic strategies to build the 2,6-disubstituted piperidine structural motif with a focus on stereochemical control of two substituents at C2 and C6. The key reactions in this process are then classified on the basis of how the piperidine rings were built with specific examples of natural products that control the stereochemical outcomes and their transition states.
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Affiliation(s)
- Nikhil Srivastava
- Department of Chemistry, Hankuk University of Foreign Studies, Yongin 17035, Korea.
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Macha L, Ha HJ. Total Synthesis and Absolute Stereochemical Assignment of Microgrewiapine A and Its Stereoisomers. J Org Chem 2019; 84:94-103. [PMID: 30406652 DOI: 10.1021/acs.joc.8b02342] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Total synthesis of both enantiomers of (-)-(2 S,3 R,6 S)- and (+)-(2 R,3 S,6 R)-microgrewiapine A along with (+)-microcosamine A and (-)-6- epi-microgrewiapine A from chiral 1-(α-methylbenzyl)-aziridine-2-carboxylate was accomplished for the first time. Key steps involved in this synthesis include one-pot reductive ring-opening of aziridine, debenzylation, intramolecular N-alkylation to obtain the key piperidine ring, and Julia-Kociensky olefination. The absolute configuration of natural microgrewiapine A is assigned as (+)-(2 R,3 S,6 R), which is opposite to the originally proposed structure by comparing optical rotation data of both synthetic enantiomers.
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Affiliation(s)
- Lingamurthy Macha
- Department of Chemistry , Hankuk University of Foreign Studies , Yongin 17035 , Korea
| | - Hyun-Joon Ha
- Department of Chemistry , Hankuk University of Foreign Studies , Yongin 17035 , Korea
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Yan P, Ritt DA, Zlotkowski K, Bokesch HR, Reinhold WC, Schneekloth JS, Morrison DK, Gustafson KR. Macrophilones from the Marine Hydroid Macrorhynchia philippina Can Inhibit ERK Cascade Signaling. JOURNAL OF NATURAL PRODUCTS 2018; 81:1666-1672. [PMID: 29979591 PMCID: PMC6319658 DOI: 10.1021/acs.jnatprod.8b00343] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Six new macrophilone-type pyrroloiminoquines were isolated and identified from an extract of the marine hydroid Macrorhynchia philippina. The proton-deficient and heteroatom-rich structures of macrophilones B-G (2-7) were elucidated by spectroscopic analysis and comparison of their data with those of the previously reported metabolite macrophilone A (1). Compounds 1-7 are the first pyrroloiminoquines to be reported from a hydroid. The macrophilones were shown to inhibit the enzymatic conjugation of SUMO to peptide substrates, and macrophilones A (1) and C (3) exhibit potent and selective cytotoxic properties in the NCI-60 anticancer screen. Bioinformatic analysis revealed a close association of the cytotoxicity profiles of 1 and 3 with two known B-Raf kinase inhibitory drugs. While compounds 1 and 3 showed no kinase inhibitory activity, they resulted in a dramatic decrease in cellular protein levels of selected components of the ERK signal cascade. As such, the chemical scaffold of the macrophilones could provide small-molecule therapeutic leads that target the ERK signal transduction pathway.
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Affiliation(s)
- Pengcheng Yan
- Molecular Targets Program, Center for Cancer Research, National Cancer Institute, Frederick, Maryland 21702-1201, United States
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, People’s Republic of China
| | - Daniel A. Ritt
- Laboratory of Cell and Developmental Signaling, Center for Cancer Research, National Cancer Institute, Frederick, Maryland 21702-1201, United States
| | - Katherine Zlotkowski
- Chemical Biology Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, Maryland 21702-1201, United States
| | - Heidi R. Bokesch
- Molecular Targets Program, Center for Cancer Research, National Cancer Institute, Frederick, Maryland 21702-1201, United States
- Basic Science Program, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, Frederick, Maryland 21702-1201, United States
| | - William C. Reinhold
- Developmental Therapeutics Branch, Center for Cancer Research, National Cancer Institute, Bethesda, Maryland 20892, United States
| | - John S. Schneekloth
- Chemical Biology Laboratory, Center for Cancer Research, National Cancer Institute, Frederick, Maryland 21702-1201, United States
| | - Deborah K. Morrison
- Laboratory of Cell and Developmental Signaling, Center for Cancer Research, National Cancer Institute, Frederick, Maryland 21702-1201, United States
| | - Kirk R. Gustafson
- Molecular Targets Program, Center for Cancer Research, National Cancer Institute, Frederick, Maryland 21702-1201, United States
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Gonnard L, Guérinot A, Cossy J. Iron-Catalyzed Synthesis of α-Dienyl Five- and Six-Membered N-Heterocycles. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700977] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Laurine Gonnard
- Laboratoire de Chimie Organique; Institute of Chemistry, Biology and Innovation (CBI)-UMR 8231; ESPCI Paris, CNRS, PSL Research University; 10 rue Vauquelin 75231 Paris Cedex 05 France
| | - Amandine Guérinot
- Laboratoire de Chimie Organique; Institute of Chemistry, Biology and Innovation (CBI)-UMR 8231; ESPCI Paris, CNRS, PSL Research University; 10 rue Vauquelin 75231 Paris Cedex 05 France
| | - Janine Cossy
- Laboratoire de Chimie Organique; Institute of Chemistry, Biology and Innovation (CBI)-UMR 8231; ESPCI Paris, CNRS, PSL Research University; 10 rue Vauquelin 75231 Paris Cedex 05 France
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Raji Reddy C, Latha B, Warudikar K, Singarapu KK. Total synthesis of a piperidine alkaloid, microcosamine A. Org Biomol Chem 2016; 14:251-8. [PMID: 26565783 DOI: 10.1039/c5ob02085a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
The first asymmetric total synthesis of a new natural piperidine alkaloid, microcosamine A, has been accomplished from d-serine and d-methyl lactate as chiral pool starting materials. Key features of the strategy include the utility of Horner-Wadsworth-Emmons reaction, Luche reduction, intramolecular carbamate N-alkylation to form the piperidine framework and Julia-Kocienski olefination to install the triene side-chain.
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Affiliation(s)
- Chada Raji Reddy
- Division of Natural Products Chemistry, CSIR-Indian Institute of Chemical Technology, Hyderabad, India 500 007.
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Still PC, Yi B, González-Cestari TF, Pan L, Pavlovicz RE, Chai HB, Ninh TN, Li C, Soejarto DD, McKay DB, Kinghorn AD. Alkaloids from Microcos paniculata with cytotoxic and nicotinic receptor antagonistic activities. JOURNAL OF NATURAL PRODUCTS 2013; 76:243-9. [PMID: 23327794 PMCID: PMC3580017 DOI: 10.1021/np3007414] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Microcos paniculata is a large shrub or small tree that grows in several countries in South and Southeast Asia. In the present study, three new piperidine alkaloids, microgrewiapines A-C (1-3), as well as three known compounds, inclusive of microcosamine A (4), 7'-(3',4'-dihydroxyphenyl)-N-[4-methoxyphenyl)ethyl]propenamide (5), and liriodenine (6), were isolated from cytotoxic fractions of the separate chloroform-soluble extracts of the stem bark, branches, and leaves of M. paniculata. Compounds 1-6 and 1a (microgrewiapine A 3-acetate) showed a range of cytotoxicity values against the HT-29 human colon cancer cell line. When evaluated for their effects on human α3β4 or α4β2 nicotinic acetylcholine receptors (nAChRs), several of these compounds were shown to be active as nAChR antagonists. As a result of this study, microgrewiapine A (1) was found to be a selective cytotoxic agent for colon cancer cells over normal colon cells and to exhibit nicotinic receptor antagonistic activity for both the hα3β4 and hα4β2 receptor subtypes.
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Affiliation(s)
- Patrick C. Still
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - Bitna Yi
- Division of Pharmacology, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - Tatiana F. González-Cestari
- Division of Pharmacology, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - Li Pan
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - Ryan E. Pavlovicz
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
- Biophysics Graduate Program, The Ohio State University, Columbus, Ohio 43210, United States
| | - Hee-Byung Chai
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - Tran Ngoc Ninh
- Institute of Ecology and Biological Resources, Vietnamese Academy of Science and Technology, Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Chenglong Li
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - Djaja Djendoel Soejarto
- Program for Collaborative Research in the Pharmaceutical Sciences and Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois 60612, United States
- Department of Botany, Field Museum of Natural History, 1400 S. Lake Shore Drive, Chicago, Illinois 60605, United States
| | - Dennis B. McKay
- Division of Pharmacology, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
| | - A. Douglas Kinghorn
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, Columbus, Ohio 43210, United States
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McCrea-Hendrick M, Nichols CJ. Synthesis of a Model Compound of Corydendramine A via a Julia Coupling. SYNTHETIC COMMUN 2009. [DOI: 10.1080/00397910902788208] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Feng SX, Lin LD, Xu HH, Wei XY. Two new piperidine alkaloids from the leaves of Microcos paniculata. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2008; 10:1155-1158. [PMID: 19031262 DOI: 10.1080/10286020802361289] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Two new piperidine alkaloids, microcosamines A (1) and B (2), were isolated from the leaves of Microcos paniculata. Their structures were elucidated by spectroscopic analysis. Both new compounds showed significant larvicidal activity against Culex quinquefasciatus.
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Affiliation(s)
- Shi-Xiu Feng
- South China Botanical Garden, The Chinese Academy of Sciences, Guangzhou, China
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Williams I, Reeves K, Kariuki BM, Cox LR. Stereoselective synthesis of 2-dienyl-substituted piperidines using an η4-dienetricarbonyliron complex as the stereocontrolling element in a double reductive amination cascade. Org Biomol Chem 2007; 5:3325-9. [PMID: 17912386 DOI: 10.1039/b710898b] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In the presence of NaBH(OAc)(3), a 1,5-keto-aldehyde, contained within a side-chain of an eta(4)-dienetricarbonyliron complex, undergoes a double reductive amination sequence with a series of primary amines, to provide the corresponding piperidine products in good to excellent yield. The dienetricarbonyliron complex functions as a powerful chiral auxiliary in this cascade process, exerting complete control over the stereoselectivity of the reaction, with the formation of a single diastereoisomeric product. The sense of stereoinduction has been confirmed by X-ray crystallography. Removal of the tricarbonyliron moiety can be effected with CuCl(2) to afford the corresponding 2-dienyl-substituted piperidine in excellent yield. Attempted extension of this cyclisation strategy to the corresponding azepane ring system using a 1,6-keto-aldehyde as the cyclisation precursor was unsuccessful; in this case, the reaction stopped after a single reductive amination on the aldehyde to provide an acyclic keto-amine product.
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Affiliation(s)
- Iwan Williams
- School of Chemistry, University of Birmingham, Edgbaston, Birmingham, UKB15 2TT
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Milanowski DJ, Gustafson KR, Rashid MA, Pannell LK, McMahon JB, Boyd MR. Gymnangiamide, a Cytotoxic Pentapeptide from the Marine Hydroid Gymnangium regae. J Org Chem 2004; 69:3036-42. [PMID: 15104441 DOI: 10.1021/jo0303113] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A cytotoxic aqueous extract from the marine hydroid Gymnangium regae provided a novel linear pentapeptide, designated gymnangiamide (1). The planar structure of 1 was elucidated by interpretation of spectral data as well as chemical degradation and derivatization studies. In addition to the amino acids isoleucine and phenylserine, this peptide contained N-desmethyldolaisoleuine, O-desmethyldolaproine, and alpha-guanidino serine, three residues that have not previously been reported in a natural product. The absolute configurations of the constituent amino/guanidino acids were determined by chemical degradation and derivatization, followed by HPLC and LC-MS comparison with authentic standards. Gymnangiamide (1) was moderately cytotoxic against a number of human tumor cell lines in vitro.
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Affiliation(s)
- Dennis J Milanowski
- Molecular Targets Development Program, Center for Cancer Research, National Cancer Institute, Building 1052, Room 121, Frederick, Maryland 21702-1201, USA
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