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Le Pogam P, Beniddir MA. Structural diversity and chemical logic underlying the assembly of monoterpene indole alkaloids oligomers. Nat Prod Rep 2024; 41:1723-1765. [PMID: 39262398 DOI: 10.1039/d4np00011k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/13/2024]
Abstract
Covering: up to 2024This review aims to draw a parallel between all known oligomers of monoterpene indole alkaloids (MIAs) by illustrating the chemical logic underlying their assembly. For this purpose, oligomeric MIAs were first comprehensively listed and organized according to the names of the backbones of their constitutive monomers and the binding sites. From this extensive list, an oligomer network was generated and unprecedented MIA statistics were mined and shared herein. Subsequently, oligomeric MIAs were categorized according to the number of connections instigated between their monomeric components (single, double, triple, and mixed tethering), then subdivided according to the uniqueness or combination of oligomerization assembly reactions. This effort outlined oligomerization trends in a scaffold-specific manner, and established binding reactivity patterns facilitating the comprehension of the associated biosynthetic processes. At last, this review illustrates a unique initiative in crafting a comprehensive repository of machine-readable metadata for MIA oligomers that could be leveraged for chemoinformatic purposes.
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Affiliation(s)
- Pierre Le Pogam
- Équipe, Chimie des Substances Naturelles, Université Paris-Saclay, CNRS, BioCIS, 17 avenue des Sciences, 91400 Orsay, France.
| | - Mehdi A Beniddir
- Équipe, Chimie des Substances Naturelles, Université Paris-Saclay, CNRS, BioCIS, 17 avenue des Sciences, 91400 Orsay, France.
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2
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jiao W, Zhang G, Tang S, Chunmei Y, Ma X, Xiong G, Cheng Y, Xiang L, Shao H, Zhang F. Synthesis of 2,2‐Disubstituted Perhydrofuro[2,3‐b]‐pyran Derivatives containing Indole via BF3·Et2O. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202100743] [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)
- wei jiao
- Chengdu Institute of Biology Natural Product Research Center No. 93, Keyuan South Road, Wuhou District 610041 Chengdu CHINA
| | - Guoqing Zhang
- North Sichuan Medical University School of Pharmacy CHINA
| | - Senling Tang
- Chengdu Institute of Biology Natural Products Research Center CHINA
| | - Yang Chunmei
- Chengdu Institute of Biology Natural Product Research Center CHINA
| | - Xiaofeng Ma
- Chengdu Institute of Biology Natural Products Research Center CHINA
| | - Guangjun Xiong
- Chengdu Institute of Biology Natural Products Research Center CHINA
| | - Yongjie Cheng
- North Sichuan Medical University School of Pharmacy CHINA
| | - Ling Xiang
- Chengdu Institute of Biology Natural Products Research Center CHINA
| | - Huawu Shao
- Chengdu Institute of Biology Natrual Products Research Center CHINA
| | - Fan Zhang
- North Sichuan Medical University School of Parmachy CHINA
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3
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Nicolaou KC, Pan S, Shelke Y, Ye Q, Das D, Rigol S. A Highly Convergent Total Synthesis of Norhalichondrin B. J Am Chem Soc 2021; 143:20970-20979. [PMID: 34851106 DOI: 10.1021/jacs.1c10539] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A new synthetic strategy for the total synthesis of norhalichondrin B featuring a highly convergent approach and our recently disclosed reverse approach for the synthesis of cyclic ether structural motifs is disclosed. Resulting in the shortest route to norhalichondrin B disclosed thus far, the reported total synthesis was achieved through the synthesis of two almost equally complex fragments whose coupling and short elaboration sequence featured an essential epimerization of the C16 stereocenter occurring concurrently with a simple acid-induced deprotection, a tactic based on a prior study along the synthetic route. This unprecedented strategy within the halichondrin family of natural products could find practical application to the synthesis of other more or less complex natural or designed halichondrin analogues.
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Affiliation(s)
- K C Nicolaou
- Department of Chemistry, BioScience Research Collaborative, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Saiyong Pan
- Department of Chemistry, BioScience Research Collaborative, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Yogesh Shelke
- Department of Chemistry, BioScience Research Collaborative, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Qiuji Ye
- Department of Chemistry, BioScience Research Collaborative, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Dipendu Das
- Department of Chemistry, BioScience Research Collaborative, Rice University, 6100 Main Street, Houston, Texas 77005, United States
| | - Stephan Rigol
- Department of Chemistry, BioScience Research Collaborative, Rice University, 6100 Main Street, Houston, Texas 77005, United States
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4
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Total synthesis of alstofonidine via its putative biosynthetic congener. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.131930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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5
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Gold(I)-Catalyzed Domino Reaction for Furopyrans Synthesis. Molecules 2020; 25:molecules25214976. [PMID: 33121149 PMCID: PMC7663467 DOI: 10.3390/molecules25214976] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 10/23/2020] [Accepted: 10/23/2020] [Indexed: 12/04/2022] Open
Abstract
We report herein an efficient synthesis of furopyran derivatives through a gold(I)-catalyzed domino reaction. The cascade reaction starts with two regioselective cyclizations, a 5-endo-dig and a 8-endo-dig, followed with a Grob-type fragmentation and a hetero Diels–Alder. The obtained furopyran derivatives contain fused and spiro-heterocycles. During this one-pot process, four bonds and four controlled stereogenic centers including a quaternary center are formed.
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6
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Yeap JSY, Tan CH, Yong KT, Lim KH, Lim SH, Low YY, Kam TS. Macroline, talpinine, and sarpagine alkaloids from Alstonia penangiana. An NMR-based method for differentiating between A. penangiana and A. macrophylla. PHYTOCHEMISTRY 2020; 176:112391. [PMID: 32387883 DOI: 10.1016/j.phytochem.2020.112391] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 04/13/2020] [Accepted: 04/15/2020] [Indexed: 06/11/2023]
Abstract
Fourteen previously undescribed alkaloids comprising two N-1-hydroxymethylmacroline alkaloids, one talpinine-type oxindole acetal, a pair of equilibrating talpinine-type oxindole hemiacetals, eight oxidized derivatives of sarpagine- and akuammiline-type indole alkaloids, in addition to alstochalotine a diastereomer of gelsochalotine recently isolated from Gelsemium elegans, were isolated from the leaf and stem-bark extracts of Alstonia penangiana. The structures and relative configurations of these alkaloids were established using NMR, MS, and in one instance, confirmed by X-ray diffraction analysis. An NMR-based method is described as a useful chemotaxonomic tool for differentiating between A. penangiana and A. macrophylla. Several of the alkaloids isolated showed appreciable growth inhibitory effects when tested against a number of human cancer cell lines.
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Affiliation(s)
- Joanne Soon-Yee Yeap
- Department of Chemistry, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Chun-Hoe Tan
- Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Kien-Thai Yong
- Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Kuan-Hon Lim
- School of Pharmacy, University of Nottingham Malaysia Campus, Jalan Broga, 43500, Semenyih, Selangor, Malaysia
| | - Siew-Huah Lim
- Department of Chemistry, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia
| | - Yun-Yee Low
- Department of Chemistry, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia.
| | - Toh-Seok Kam
- Department of Chemistry, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia.
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7
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Yeap JSY, Saad HM, Tan CH, Sim KS, Lim SH, Low YY, Kam TS. Macroline-Sarpagine Bisindole Alkaloids with Antiproliferative Activity from Alstonia penangiana. JOURNAL OF NATURAL PRODUCTS 2019; 82:3121-3132. [PMID: 31642315 DOI: 10.1021/acs.jnatprod.9b00712] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
A methanol extract of the stem bark of the Malayan Alstonia penangiana provided seven new bisindole alkaloids, comprising six macroline-sarpagine alkaloids (angustilongines E-K, 1-6) and one macroline-pleiocarpamine bisindole alkaloid (angustilongine L, 7). Analysis of the spectroscopic data (NMR and MS) of these compounds led to the proposed structures of these alkaloids. The macroline-sarpagine alkaloids (1-6) showed in vitro growth inhibitory activity against a panel of human cancer cell lines, inclusive of KB, vincristine-resistant KB, PC-3, LNCaP, MCF7, MDA-MB-231, HT-29, HCT 116, and A549 cells (IC50 values: 0.02-9.0 μM).
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Affiliation(s)
- Joanne Soon-Yee Yeap
- Department of Chemistry, Faculty of Science , University of Malaya , 50603 Kuala Lumpur , Malaysia
| | - Hazwani Mat Saad
- Institute of Biological Sciences, Faculty of Science , University of Malaya , 50603 Kuala Lumpur , Malaysia
| | - Chun-Hoe Tan
- Institute of Biological Sciences, Faculty of Science , University of Malaya , 50603 Kuala Lumpur , Malaysia
| | - Kae-Shin Sim
- Institute of Biological Sciences, Faculty of Science , University of Malaya , 50603 Kuala Lumpur , Malaysia
| | - Siew-Huah Lim
- Department of Chemistry, Faculty of Science , University of Malaya , 50603 Kuala Lumpur , Malaysia
| | - Yun-Yee Low
- Department of Chemistry, Faculty of Science , University of Malaya , 50603 Kuala Lumpur , Malaysia
| | - Toh-Seok Kam
- Department of Chemistry, Faculty of Science , University of Malaya , 50603 Kuala Lumpur , Malaysia
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9
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Kadam VD, Rao B SS, Mahesh SK, Chakraborty M, Vemulapalli SPB, Dayaka SN, Sudhakar G. Stereoselective Access to the Core Structure of Macroline-Type Indole Alkaloids: Total Synthesis of Macroline and Alstomicine. Org Lett 2018; 20:4782-4786. [PMID: 30067369 DOI: 10.1021/acs.orglett.8b01921] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Rapid synthesis of the pentacyclic core structure of macroline-type indole alkaloids, and its application in the total synthesis of macroline and alstomicine is described. The core structure was accomplished in a highly stereocontrolled manner via two key steps, Ireland-Claisen rearrangement and Pictet-Spengler cyclization, commencing from a readily available starting material l-tryptophan, which obviated the need of a particular chiral source as an external catalyst, reagent, or internal auxiliary.
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Affiliation(s)
- Vilas D Kadam
- Academy of Scientific & Innovative Research (AcSIR) , New Delhi , India
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10
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Yan TL, Han DX, Hu J, Huang XY, Wang HK. Monoterpenoid indole alkaloids from Alstonia mairei and their cytotoxicity. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2017; 19:550-556. [PMID: 28393571 DOI: 10.1080/10286020.2017.1313242] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/02/2017] [Accepted: 03/27/2017] [Indexed: 06/07/2023]
Abstract
Phytochemical investigation on the 70% ethanol extract of the leaves of Alstonia mairei resulted in the isolation of three new monoterpenoid indole alkaloids, alstomairines A-C (1-3), along with one known compound, alpneumine A (4). Structural elucidation of all the compounds was accomplished by spectral methods such as 1D and 2D NMR, IR, UV, and HRESIMS. The isolated compounds were tested in vitro for cytotoxic activities against four osteosarcoma cell lines. Consequently, alkaloids 2 and 3 exhibited cytotoxic activities for all tested tumor cell lines with IC50 values from 9.2 to 13.0 μM.
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Affiliation(s)
- Ting-Liang Yan
- a Department of Basic Medicine , Qujing Medical College , Qujing 655000 , China
| | - Dun-Xin Han
- b Department of Spine Surgery , 107th Hospital of People's Liberation Army , Yantai , China
| | - Jiang Hu
- c College of Biological Resources and Environment Science , Qujing Normal University , Qujing 655011 , China
| | - Xiao-Yun Huang
- a Department of Basic Medicine , Qujing Medical College , Qujing 655000 , China
| | - Hong-Kun Wang
- d Department of Plastic and Burns Surgery , Fujian Dongfang Hospital, Xiamen University , Fuzhou 350025 , China
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11
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Subba Reddy BV, Hanuman Reddy V, Durgaprasad M, Gopal Reddy S, Lakshmi JK, Aneesh PV, Rami Reddy YV. Sequential oxonium–olefin–alkyne cyclization for the stereoselective synthesis of (octahydro-1H-pyrano[3,4-c]pyridin-5-yl)methanone derivatives. Org Biomol Chem 2016; 14:11396-11401. [DOI: 10.1039/c6ob01641c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A broad range of aldehydes undergo a smooth cascade cyclization with (E)-5-(3-phenylprop-2-ynylamino)pent-3-en-1-ol in the presence of BF3·OEt2 at room temperature.
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Affiliation(s)
- B. V. Subba Reddy
- Centre for Semiochemicals
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
| | - V. Hanuman Reddy
- Centre for Semiochemicals
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
- Department of Chemistry
| | - M. Durgaprasad
- Centre for Semiochemicals
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
| | - S. Gopal Reddy
- Centre for Semiochemicals
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
| | - J. K. Lakshmi
- Centre for Nuclear Magnetic Resonance
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
| | - P. V. Aneesh
- Centre for Nuclear Magnetic Resonance
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
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12
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Abstract
The sarpagine-related macroline and ajmaline alkaloids share a common biosynthetic origin, and bear important structural similarities, as expected. These indole alkaloids are widely dispersed in 25 plant genera, principally in the family Apocynaceae. Very diverse and interesting biological properties have been reported for this group of natural products. Isolation of new sarpagine-related alkaloids and the asymmetric synthesis of these structurally complex molecules are of paramount importance to the synthetic and medicinal chemists. A total of 115 newly isolated sarpagine-related macroline and ajmaline alkaloids, along with their physicochemical properties have been included in this chapter. A general and efficient strategy for the synthesis of these monomeric alkaloids, as well as bisindoles, has been presented, which involves application of the asymmetric Pictet-Spengler reaction (>98% ee) as a key step because of the ease of scale up of the tetracyclic template. Also included in this chapter are the syntheses of the sarpagine-related alkaloids, published since 2000.
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Affiliation(s)
- Ojas A. Namjoshi
- RTI International, Center for Drug Design and Discovery, 3040 E. Cornwallis Road, Research Triangle Park, NC 27709, USA
| | - James M. Cook
- University of Wisconsin-Milwaukee, Chemistry Department, 3210 E. Cramer Street, Milwaukee, WI 53211, USA
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13
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Pan L, Terrazas C, Muñoz Acuña U, Ninh TN, Chai H, Carcache de Blanco EJ, Soejarto DD, Satoskar AR, Kinghorn AD. Bioactive indole alkaloids isolated from Alstonia angustifolia. PHYTOCHEMISTRY LETTERS 2014; 10:54-59. [PMID: 25584095 PMCID: PMC4287998 DOI: 10.1016/j.phytol.2014.06.010] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Bioassay-guided fractionation was conducted on a CHCl3-soluble extract of the stem bark of Alstonia angustifolia (Apocynaceae) collected in Vietnam using the HT-29 human colon cancer cell line, and led to the isolation of a new sarpagine-type indole alkaloid (1), together with nine known alkaloids, including four macroline-derived alkaloids (2-5), a sarpagine-type alkaloid (6), and four macroline-pleiocarpamine bisindole alkaloids (7-10). The structure of the new compound (1) was determined on the basis of spectroscopic data interpretation. Compounds 1-10 were evaluated in vitro for their NF-κB (p65) inhibitory activity against the Hela cells in an ELISA assay. The new sarpagine alkaloid, N(4)-methyltalpinine (1), was found to show significant NF-κB inhibitory activity (ED50 = 1.2 µM). Furthermore, all the isolates (1-10) were evaluated in vitro for their antileishmanial activity, and compounds (1-4, 6 and 8-10) exhibited leishmaniacidal activity against promastigotes of Leishmania mexicana.
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Affiliation(s)
- Li Pan
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, OH 43210, United States
| | - César Terrazas
- Department of Pathology, College of Medicine, The Ohio State University, Columbus, OH 43210, United States
| | - Ulyana Muñoz Acuña
- Division of Pharmacy Practice and Administration, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
| | - Tran Ngoc Ninh
- Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Heebyung Chai
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, OH 43210, United States
| | - Esperanza J Carcache de Blanco
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, OH 43210, United States ; Division of Pharmacy Practice and Administration, College of Pharmacy, The Ohio State University, Columbus, OH 43210, United States
| | - Djaja D Soejarto
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60612, United States ; Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology, Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Abhay R Satoskar
- Department of Pathology, College of Medicine, The Ohio State University, Columbus, OH 43210, United States
| | - A Douglas Kinghorn
- Division of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, The Ohio State University, OH 43210, United States
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14
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Tan SJ, Lim JL, Low YY, Sim KS, Lim SH, Kam TS. Oxidized derivatives of macroline, sarpagine, and pleiocarpamine alkaloids from Alstonia angustifolia. JOURNAL OF NATURAL PRODUCTS 2014; 77:2068-2080. [PMID: 25211145 DOI: 10.1021/np500439u] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A total of 20 new indole alkaloids comprising mainly oxidized derivatives of macroline- (including alstofonidine, a macroline indole incorporating a butyrolactone ring-F), pleiocarpamine-, and sarpagine-type alkaloids were isolated from the bark and leaf extracts of Alstonia angustifolia. The structures and relative configurations of these alkaloids were determined using NMR and MS analyses and in some instances confirmed by X-ray diffraction analyses. Alkaloids 3, 7, 35, and 41 showed moderate to weak activity, while 21 showed strong activity in reversing multidrug resistance in vincristine-resistant KB cells.
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Affiliation(s)
- Shin-Jowl Tan
- Department of Chemistry and ‡Institute of Biological Sciences, University of Malaya , 50603 Kuala Lumpur, Malaysia
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Lim SH, Low YY, Sinniah SK, Yong KT, Sim KS, Kam TS. Macroline, akuammiline, sarpagine, and ajmaline alkaloids from Alstonia macrophylla. PHYTOCHEMISTRY 2014; 98:204-215. [PMID: 24342109 DOI: 10.1016/j.phytochem.2013.11.014] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2013] [Revised: 11/04/2013] [Accepted: 11/21/2013] [Indexed: 06/03/2023]
Abstract
A total of seventeen alkaloids, comprising six macroline (including alstofolinine A, a macroline indole incorporating a butyrolactone ring-E), two ajmaline, one sarpagine, and eight akuammiline alkaloids, were isolated from the stem-bark and leaf extracts of the Malayan Alstonia macrophylla. The structure and relative configurations of these alkaloids were established using NMR, MS and in several instances, confirmed by X-ray diffraction analysis. Six of these alkaloids were effective in reversing multidrug-resistance (MDR) in vincristine-resistant KB cells.
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Affiliation(s)
- Siew-Huah Lim
- Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Yun-Yee Low
- Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | | | - Kien-Thai Yong
- Institute of Biological Sciences, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Kae-Shin Sim
- Institute of Biological Sciences, University of Malaya, 50603 Kuala Lumpur, Malaysia
| | - Toh-Seok Kam
- Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia.
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Ma X, Tang Q, Ke J, Zhang J, Yang X, Shen X, Shao H. A neighboring group participation strategy: direct and highly diastereoselective synthesis of 2-substituted and 2,2-bisubstituted perhydrofuro[2,3-b]pyran derivatives. Org Biomol Chem 2014; 12:7381-8. [DOI: 10.1039/c4ob00642a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A highly diastereoselective synthesis method for 2-substituted and 2,2-bisubstituted perhydrofuro[2,3-b]pyran derivatives from 2-C-branched sugars via a neighboring group participation strategy was developed.
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Affiliation(s)
- Xiaofeng Ma
- Natural Products Research Center
- Chengdu Institute of Biology
- Chinese Academy of Sciences
- Chengdu 610041, China
- The University of Chinese Academy of Sciences
| | - Qin Tang
- Natural Products Research Center
- Chengdu Institute of Biology
- Chinese Academy of Sciences
- Chengdu 610041, China
- The University of Chinese Academy of Sciences
| | - Jun Ke
- Natural Products Research Center
- Chengdu Institute of Biology
- Chinese Academy of Sciences
- Chengdu 610041, China
- The University of Chinese Academy of Sciences
| | - Jichao Zhang
- Natural Products Research Center
- Chengdu Institute of Biology
- Chinese Academy of Sciences
- Chengdu 610041, China
- The University of Chinese Academy of Sciences
| | - Xinglong Yang
- Natural Products Research Center
- Chengdu Institute of Biology
- Chinese Academy of Sciences
- Chengdu 610041, China
- The University of Chinese Academy of Sciences
| | - Xudong Shen
- Natural Products Research Center
- Chengdu Institute of Biology
- Chinese Academy of Sciences
- Chengdu 610041, China
- The University of Chinese Academy of Sciences
| | - Huawu Shao
- Natural Products Research Center
- Chengdu Institute of Biology
- Chinese Academy of Sciences
- Chengdu 610041, China
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17
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Hirasawa Y, Arai H, Rahman A, Kusumawati I, Zaini NC, Shirota O, Morita H. Voacalgines A–E, new indole alkaloids from Voacanga grandifolia. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.10.097] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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18
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Tan SJ, Lim KH, Subramaniam G, Kam TS. Macroline-sarpagine and macroline-pleiocarpamine bisindole alkaloids from Alstonia angustifolia. PHYTOCHEMISTRY 2013; 85:194-202. [PMID: 22995929 DOI: 10.1016/j.phytochem.2012.08.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2012] [Revised: 06/28/2012] [Accepted: 08/22/2012] [Indexed: 06/01/2023]
Abstract
Nine bisindole alkaloids, comprising four belonging to the macroline-sarpagine group, and five belonging to the macroline-pleiocarpamine group, were isolated from the stem-bark extracts of Alstonia angustifolia (Apocynacea). Their structures were established using NMR and MS analyses.
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Affiliation(s)
- Shin-Jowl Tan
- Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
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19
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Ishikura M, Abe T, Choshi T, Hibino S. Simple indole alkaloids and those with a non-rearranged monoterpenoid unit. Nat Prod Rep 2013; 30:694-752. [DOI: 10.1039/c3np20118j] [Citation(s) in RCA: 269] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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20
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Taha HA, Richards MR, Lowary TL. Conformational Analysis of Furanoside-Containing Mono- and Oligosaccharides. Chem Rev 2012; 113:1851-76. [DOI: 10.1021/cr300249c] [Citation(s) in RCA: 107] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Hashem A. Taha
- Alberta Glycomics Centre and Department of Chemistry, Gunning−Lemieux Chemistry Centre, University of Alberta, Edmonton, AB, Canada T6G 2G2
| | - Michele R. Richards
- Alberta Glycomics Centre and Department of Chemistry, Gunning−Lemieux Chemistry Centre, University of Alberta, Edmonton, AB, Canada T6G 2G2
| | - Todd L. Lowary
- Alberta Glycomics Centre and Department of Chemistry, Gunning−Lemieux Chemistry Centre, University of Alberta, Edmonton, AB, Canada T6G 2G2
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Analysis of alkaloids from different chemical groups by different liquid chromatography methods. OPEN CHEM 2012. [DOI: 10.2478/s11532-012-0037-y] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
AbstractAlkaloids are biologically active compounds widely used as pharmaceuticals and synthesised as secondary methabolites in plants. Many of these compounds are strongly toxic. Therefore, they are often subject of scientific interests and analysis. Since alkaloids — basic compounds appear in aqueous solutions as ionized and unionized forms, they are difficult for chromatographic separation for peak tailing, poor systems efficiency, poor separation and poor column-to-column reproducibility. For this reason it is necessity searching of more suitable chromatographic systems for analysis of the compounds. In this article we present an overview on the separation of selected alkaloids from different chemical groups by liquid chromatography thus indicating the range of useful methods now available for alkaloid analysis. Different selectivity, system efficiency and peaks shape may be achieved in different LC methods separations by use of alternative stationary phases: silica, alumina, chemically bonded stationary phases, cation exchange phases, or by varying nonaqueous or aqueous mobile phase (containing different modifier, different buffers at different pH, ion-pairing or silanol blocker reagents). Developments in TLC (NP and RP systems), HPLC (NP, RP, HILIC, ion-exchange) are presented and the advantages of each method for alkaloids analysis are discussed.
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Lim SH, Low YY, Tan SJ, Lim KH, Thomas NF, Kam TS. Perhentidines A-C: macroline-macroline bisindoles from Alstonia and the absolute configuration of perhentinine and macralstonine. JOURNAL OF NATURAL PRODUCTS 2012; 75:942-950. [PMID: 22559995 DOI: 10.1021/np300120p] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Three new bisindole alkaloids of the macroline-macroline type, perhentidines A-C (1-3), were isolated from the stem-bark extract of Alstonia macrophylla and Alstonia angustifolia. The structures of these alkaloids were established on the basis of NMR and MS analyses. The absolute configurations of perhentinine (4) and macralstonine (5) were established by X-ray diffraction analyses, which facilitated assignment of the configuration at C-20 in the regioisomeric bisindole alkaloids perhentidines A-C (1-3). A potentially useful method for the determination of the configuration at C-20 based on comparison of the NMR chemical shifts of the bisindoles and their acetate derivatives, in these and related bisindoles with similar constitution and branching of the monomeric units, is also presented.
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Affiliation(s)
- Siew-Huah Lim
- Department of Chemistry, University of Malaya , 50603 Kuala Lumpur, Malaysia
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Lim SH, Tan SJ, Low YY, Kam TS. Lumutinines A-D, linearly fused macroline-macroline and macroline-sarpagine bisindoles from Alstonia macrophylla. JOURNAL OF NATURAL PRODUCTS 2011; 74:2556-2562. [PMID: 22148233 DOI: 10.1021/np200730j] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Four new linearly fused bisindole alkaloids, lumutinines A-D (1-4), were isolated from the stem-bark extract of Alstonia macrophylla. Lumutinines A (1) and B (2) represent the first examples of linear, ring A/F-fused macroline-macroline-type bisindoles, while lumutinines C (3) and D (4) were constituted from the union of macroline and sarpagine moieties. A reinvestigation of the stereochemical assignment of alstoumerine (8) by NMR and X-ray diffraction analyses indicated that the configuration at C-16 and C-19 required revision.
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Affiliation(s)
- Siew-Huah Lim
- Department of Chemistry, University of Malaya, 50603 Kuala Lumpur, Malaysia
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