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Traxler F, Zhang H, Mahavorasirikul W, Krivanek K, Cai XH, Aiyakool W, Pfeiffer M, Brecker L, Schinnerl J. Two Novel Iboga-Type and an Oxindole Glucuronide Alkaloid from Tabernaemontana peduncularis Disclose Related Biosynthetic Pathways to Tabernaemontana divaricata. Molecules 2023; 28:6664. [PMID: 37764440 PMCID: PMC10535570 DOI: 10.3390/molecules28186664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 09/12/2023] [Accepted: 09/12/2023] [Indexed: 09/29/2023] Open
Abstract
Phytochemical investigation of the two Tabernaemontana species (Apocynaceae) T. peduncularis Wall. and T. divaricata (L.) R.Br. ex Roem. & Schult. indicated closely related biosynthetic pathways leading to lipophilic and hydrophilic alkaloids. In total, 18 specialized metabolites comprising indole-derived alkaloid aglycones, three oxindole-derived alkaloid glycosides, and two iridoid glucosides could be identified in the studied species. Among the alkaloids, the two Iboga-type alkaloids 3,7-coronaridine isoindolenine, coronaridine 3,4-iminium and a javaniside derivative bearing a glucuronic acid, named javanuronic acid, could be described by spectroscopic and spectrometric methods for the first time. A docking experiment using alpha-fold was performed to generate a protein model of the enzyme 7-deoxyloganetic acid glucosyl transferase. Performed bioassays exhibited a growth reduction of neonate Spodoptera littoralis larvae and reduced cell viability of HepG2 cells of the extracts containing Iboga alkaloids, whilst the javaniside derivatives containing hydrophilic fraction did not show any effects. These findings indicate a high flexibility in the formation of bioactive indole alkaloid aglycones by Tabernaemontana species and also evidence similar accumulation trends in both species as well as indicate that biosynthetic routes leading to oxindole alkaloids like javanisides are more widespread than reported. Furthermore, the incorporation of the three novel compounds into potential biosynthetic pathways is discussed.
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Affiliation(s)
- Florian Traxler
- Department of Organic Chemistry, University of Vienna, Währinger Strasse 38, A-1090 Vienna, Austria; (F.T.); (K.K.)
- Vienna Doctoral School in Chemistry, University of Vienna, Währinger Strasse 42, A-1090 Vienna, Austria
| | - Haoqi Zhang
- Department of Organic Chemistry, University of Vienna, Währinger Strasse 38, A-1090 Vienna, Austria; (F.T.); (K.K.)
- Vienna Doctoral School in Chemistry, University of Vienna, Währinger Strasse 42, A-1090 Vienna, Austria
| | - Wiratchanee Mahavorasirikul
- Drug Discovery and Development Center, Advanced Science and Technologies, Thammasat University (Rangsit Campus), Pathumthani 12121, Thailand;
- Thammasat University Research Unit in Cannabis and Herbal Products Innovation, Thammasat University (Rangsit Campus), Pathumthani 12121, Thailand
| | - Katharina Krivanek
- Department of Organic Chemistry, University of Vienna, Währinger Strasse 38, A-1090 Vienna, Austria; (F.T.); (K.K.)
- Department of Botany and Biodiversity Research, University of Vienna, Rennweg 14, A-1030 Vienna, Austria
| | - Xiang-Hai Cai
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China;
| | - Wichai Aiyakool
- Department of Botany, Faculty of Science, Kasetsart University, Bangkok 10900, Thailand;
- Department of Agriculture, Ministry of Agriculture and Cooperatives, Bangkok 10900, Thailand
| | - Martin Pfeiffer
- Institute of Biotechnology and Biochemical Engineering, Graz University of Technology, A-8010 Graz, Austria;
| | - Lothar Brecker
- Department of Organic Chemistry, University of Vienna, Währinger Strasse 38, A-1090 Vienna, Austria; (F.T.); (K.K.)
| | - Johann Schinnerl
- Department of Botany and Biodiversity Research, University of Vienna, Rennweg 14, A-1030 Vienna, Austria
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2
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Tang SY, Tan CH, Sim KS, Yong KT, Lim KH, Low YY, Lim SH. Polyneurines A-H, iboga alkaloids from Tabernaemontana polyneura. PHYTOCHEMISTRY 2023; 208:113587. [PMID: 36646163 DOI: 10.1016/j.phytochem.2023.113587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 01/09/2023] [Accepted: 01/13/2023] [Indexed: 06/17/2023]
Abstract
Eight undescribed iboga alkaloids, polyneurines A-H, were isolated from the bark of Tabernaemontana polyneura. The structures of these alkaloids were established by interpretation of the MS and NMR data, while the configurations were determined using GIAO NMR calculations and DP4+ probability analysis, TDDFT-ECD method, or X-ray diffraction analysis. Polyneurine A possesses a γ-lactone unit embedded within the iboga skeleton, while polyneurines D and E incorporate a formylmethyl moiety at C-3 of the iboga skeleton. Biosynthetic pathways towards the formation of polyneurines A, C, D, and E were proposed.
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Affiliation(s)
- Sin-Yee Tang
- Department of Chemistry, Faculty of Science, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - Chun-Hoe Tan
- Institute of Biological Sciences, Faculty of Science, Universiti Malaya, 50603, Kuala Lumpur, Malaysia; Department of Biotechnology, Faculty of Applied Science, Lincoln University, 47301, Petaling Jaya, Selangor, Malaysia
| | - Kae-Shin Sim
- Institute of Biological Sciences, Faculty of Science, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - Kien-Thai Yong
- Institute of Biological Sciences, Faculty of Science, Universiti Malaya, 50603, Kuala Lumpur, Malaysia
| | - Kuan-Hon Lim
- School of Pharmacy, University of Nottingham Malaysia, Jalan Broga, 43500, Semenyih, Selangor, Malaysia
| | - Yun-Yee Low
- Department of Chemistry, Faculty of Science, Universiti Malaya, 50603, Kuala Lumpur, Malaysia.
| | - Siew-Huah Lim
- Department of Chemistry, Faculty of Science, Universiti Malaya, 50603, Kuala Lumpur, Malaysia.
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3
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Otogo N'Nang E, Gallard JF, Champy P, Le Pogam P, Beniddir MA. Density functional theory-nuclear magnetic resonance-validated full structure elucidation of theionbrunonine C, an unstable N-oxide theionbrunonine from Mostuea brunonis. MAGNETIC RESONANCE IN CHEMISTRY : MRC 2022; 60:1178-1184. [PMID: 35368097 DOI: 10.1002/mrc.5271] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Revised: 03/23/2022] [Accepted: 03/30/2022] [Indexed: 06/14/2023]
Abstract
The structure elucidation of theionbrunonine C, a thioether-bridged dimeric monoterpene indole alkaloid (MIA), and more generally, one of the very few sulfur-containing MIA, is reported after its isolation from Mostuea brunonis (Gelsemiaceae). This unstable structure had already been targeted for isolation in our former, molecular network-guided, investigation of this plant, but this compound had degraded before sufficient spectroscopic data could have been acquired for a complete structure assignment. With this constraint in mind, the rapid acquisition of nuclear magnetic resonance (NMR) data enabled retrieving sufficient spectroscopic information for full structure elucidation, although from a partial set of spectroscopic information (1 H and 13 C NMR; COSY, HSQC, and HMBC). In conjunction with biosynthetic considerations, the cursory examination of 13 C NMR data unambiguously defined the complete stereostructure of 1, as further supported by density functional theory (DFT)-NMR calculations and subsequent DP4 probability score.
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Affiliation(s)
- Elvis Otogo N'Nang
- Équipe "Chimie des substances naturelles" BioCIS, CNRS, Université Paris-Saclay, Châtenay-Malabry, France
- Laboratoire de chimie des substances naturelles, Département Science Fondamentale de l'Ingénieur (INSAB), Université des Sciences et Techniques de Masuku, Franceville, Gabon
| | - Jean-François Gallard
- Institut de Chimie des Substances Naturelles, CNRS, ICSN UPR 2301, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Pierre Champy
- Équipe "Chimie des substances naturelles" BioCIS, CNRS, Université Paris-Saclay, Châtenay-Malabry, France
| | - Pierre Le Pogam
- Équipe "Chimie des substances naturelles" BioCIS, CNRS, Université Paris-Saclay, Châtenay-Malabry, France
| | - Mehdi A Beniddir
- Équipe "Chimie des substances naturelles" BioCIS, CNRS, Université Paris-Saclay, Châtenay-Malabry, France
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Tan CH, Sim DSY, Lim SH, Mohd Mohidin TB, Mohan G, Low YY, Kam TS, Sim KS. Antiproliferative and Microtubule-stabilizing Activities of Two Iboga-vobasine Bisindoles Alkaloids from Tabernaemontana corymbosa in Colorectal Adenocarcinoma HT-29 Cells. PLANTA MEDICA 2022; 88:1325-1340. [PMID: 35100653 DOI: 10.1055/a-1755-5605] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Two iboga-vobasine bisindoles, 16'-decarbomethoxyvoacamine (1: ) and its 19,20-dihydro derivative, 16'-decarbomethoxydihydrovoacamine (2: ) from Tabernaemontana corymbosa exhibited potent cytotoxicity against the human colorectal adenocarcinoma HT-29 cells in our previous studies. Bisindoles 1: and 2: selectively inhibited the growth of HT-29 cells without significant cytotoxicity to normal human colon fibroblasts CCD-18Co. Treatment with bisindoles 1: and 2: suppressed the formation of HT-29 colonies via G0/G1 cell cycle arrest and induction of mitochondrial apoptosis. Owing to its higher antiproliferative activity, bisindole 2: was chosen for the subsequent studies. Bisindole 2: inhibited the formation of HT-29 spheroids (tumor-like cell aggregates) in 3D experiments in a dose-dependent manner, while an in vitro tubulin polymerization assay and molecular docking analysis showed that bisindole 2: is a microtubule-stabilizing agent which is predicted to bind at the β-tubulin subunit at the taxol-binding site. The binding resulted in the generation of ROS, which consequently activated the oxidative stress-related cell cycle arrest and apoptotic pathways, viz., JNK/p38, p21Cip1/Chk1, and p21Cip1/Rb/E2F, as shown by microarray profiling.
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Affiliation(s)
- Chun Hoe Tan
- Institute of Biological Sciences, Faculty of Science, Universiti Malaya, Jalan Profesor Diraja Ungku Aziz, Kuala Lumpur, Wilayah Persekutuan Kuala Lumpur, Malaysia
| | - Dawn Su Yin Sim
- Department of Chemistry, Faculty of Science, Universiti Malaya, Jalan Profesor Diraja Ungku Aziz, Kuala Lumpur, Wilayah Persekutuan Kuala Lumpur, Malaysia
| | - Siew Huah Lim
- Department of Chemistry, Faculty of Science, Universiti Malaya, Jalan Profesor Diraja Ungku Aziz, Kuala Lumpur, Wilayah Persekutuan Kuala Lumpur, Malaysia
| | - Taznim Begam Mohd Mohidin
- Institute of Biological Sciences, Faculty of Science, Universiti Malaya, Jalan Profesor Diraja Ungku Aziz, Kuala Lumpur, Wilayah Persekutuan Kuala Lumpur, Malaysia
| | - Gokula Mohan
- Institute of Biological Sciences, Faculty of Science, Universiti Malaya, Jalan Profesor Diraja Ungku Aziz, Kuala Lumpur, Wilayah Persekutuan Kuala Lumpur, Malaysia
| | - Yun Yee Low
- Department of Chemistry, Faculty of Science, Universiti Malaya, Jalan Profesor Diraja Ungku Aziz, Kuala Lumpur, Wilayah Persekutuan Kuala Lumpur, Malaysia
| | - Toh Seok Kam
- Department of Chemistry, Faculty of Science, Universiti Malaya, Jalan Profesor Diraja Ungku Aziz, Kuala Lumpur, Wilayah Persekutuan Kuala Lumpur, Malaysia
| | - Kae Shin Sim
- Institute of Biological Sciences, Faculty of Science, Universiti Malaya, Jalan Profesor Diraja Ungku Aziz, Kuala Lumpur, Wilayah Persekutuan Kuala Lumpur, Malaysia
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Sim DSY, Tang SY, Low YY, Lim SH, Kam TS. Vobasine, vincamine, voaphylline, tacaman, and iboga alkaloids from Tabernaemontana corymbosa. PHYTOCHEMISTRY 2022; 203:113384. [PMID: 36007666 DOI: 10.1016/j.phytochem.2022.113384] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 08/12/2022] [Accepted: 08/14/2022] [Indexed: 06/15/2023]
Abstract
Thirteen indole alkaloids comprising six vobasine/sarpagine, one vincamine, two voaphylline, two tacaman, one iboga, and one corynantheine alkaloid, were isolated from the leaf extract of Tabernaemontana corymbosa (sample from Taiping, Perak, Malaysia). The structures of these alkaloids were determined based on analysis of the spectroscopic data (NMR and MS), and in the case of vincarudine, the absolute configuration was established by ECD and X-ray diffraction analysis. Vobasidine E represents the first vobasine-type alkaloid characterized by a contracted ring C and loss of the ethylidene/ethyl side chain. A possible biogenetic pathway from a perivine precursor, which was also present in the leaf extract, is presented. Differences in the new alkaloid content between the present and previous sample of the same plant (occurring in a different location) are discussed.
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Affiliation(s)
- Dawn Su-Yin Sim
- Department of Chemistry, Faculty of Science, Universiti Malaya, Kuala Lumpur, 50603, Malaysia
| | - Sin-Yee Tang
- Department of Chemistry, Faculty of Science, Universiti Malaya, Kuala Lumpur, 50603, Malaysia
| | - Yun-Yee Low
- Department of Chemistry, Faculty of Science, Universiti Malaya, Kuala Lumpur, 50603, Malaysia
| | - Siew-Huah Lim
- Department of Chemistry, Faculty of Science, Universiti Malaya, Kuala Lumpur, 50603, Malaysia.
| | - Toh-Seok Kam
- Department of Chemistry, Faculty of Science, Universiti Malaya, Kuala Lumpur, 50603, Malaysia.
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6
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Xu M, Peng R, Min Q, Hui S, Chen X, Yang G, Qin S. Bisindole natural products: A vital source for the development of new anticancer drugs. Eur J Med Chem 2022; 243:114748. [PMID: 36170798 DOI: 10.1016/j.ejmech.2022.114748] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 09/02/2022] [Accepted: 09/03/2022] [Indexed: 11/18/2022]
Abstract
Currently, the number of new cancer cases and deaths worldwide is increasing year on year. In addition to the requirement for cancer prevention, the top priority is still to seek the effective cure of cancer. In over a half century of constant exploration, increasing attention has been paid to the excellent anticancer activity of natural products, with more and more natural products isolated, identified and detected. For this study, the focus lies the natural products of bisindole, where two indole molecules are indirectly linked or directly polymerized, developing the diversity of structure and mechanism, accompanied with the better anticancer activity than monomers. There has been a long history of applying indirubin and vincristine in cancer treatment, verifying the anticancer effect of bisindoles. Vincribine, midostaurin and other anticancer drugs have also been developed and commercialized. In this paper, a review regarding the potential therapeutic effect of bisindole alkaloids extracted from various natural products was carried out, in which the progress made in research of 242 bisindole alkaloids for cancer treatment was introduced. These compounds may be applicable as medicinal products for clinical research in the future.
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Affiliation(s)
- Mengwei Xu
- School of Pharmacy, Xianning Medical College, Hubei University of Science and Technology, Xianning, PR China; Hubei Engineering Research Center of Traditional Chinese Medicine of South Hubei Province, Xianning Medical College, Hubei University of Science and Technology, Xianning, PR China
| | - Rui Peng
- School of Pharmacy, Xianning Medical College, Hubei University of Science and Technology, Xianning, PR China; Hubei Engineering Research Center of Traditional Chinese Medicine of South Hubei Province, Xianning Medical College, Hubei University of Science and Technology, Xianning, PR China
| | - Qing Min
- School of Pharmacy, Xianning Medical College, Hubei University of Science and Technology, Xianning, PR China; Hubei Engineering Research Center of Traditional Chinese Medicine of South Hubei Province, Xianning Medical College, Hubei University of Science and Technology, Xianning, PR China
| | - Siwen Hui
- School of Pharmacy, Xianning Medical College, Hubei University of Science and Technology, Xianning, PR China; Hubei Engineering Research Center of Traditional Chinese Medicine of South Hubei Province, Xianning Medical College, Hubei University of Science and Technology, Xianning, PR China; Department of Hepatology, China Military Institute of Chinese Materia, The Fifth Medical Center of PLA General Hospital, PR China
| | - Xin Chen
- School of Pharmacy, Xianning Medical College, Hubei University of Science and Technology, Xianning, PR China; Hubei Engineering Research Center of Traditional Chinese Medicine of South Hubei Province, Xianning Medical College, Hubei University of Science and Technology, Xianning, PR China
| | - Guang Yang
- The State Key Laboratory of Medicinal Chemical Biology, College of Pharmacy, Nankai University, Tianjin, PR China.
| | - Shuanglin Qin
- School of Pharmacy, Xianning Medical College, Hubei University of Science and Technology, Xianning, PR China; Hubei Engineering Research Center of Traditional Chinese Medicine of South Hubei Province, Xianning Medical College, Hubei University of Science and Technology, Xianning, PR China; Department of Hepatology, China Military Institute of Chinese Materia, The Fifth Medical Center of PLA General Hospital, PR China.
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7
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Chen SQ, Jia J, Hu JY, Wu J, Sun WT, Zheng M, Wang X, Zhu KK, Jiang CS, Yang SP, Zhang J, Wang SB, Cai YS. Iboga-type alkaloids with Indolizidino[8,7-b]Indole scaffold and bisindole alkaloids from Tabernaemontana bufalina Lour. PHYTOCHEMISTRY 2022; 196:113089. [PMID: 35074605 DOI: 10.1016/j.phytochem.2022.113089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Revised: 01/08/2022] [Accepted: 01/09/2022] [Indexed: 06/14/2023]
Abstract
Phytochemical investigation on the aerial parts of Tabernaemontana bufalina Lour. (Apocynaceae) led to the identification of four undescribed monoterpenoid indole alkaloids named taberbufamines A-D, an undescribed natural product, and fourteen known indole alkaloids. The structures of the undescribed alkaloids were established by spectroscopic and computational methods, and their absolute configurations were further determined by quantum chemical TDDFT calculations and the experimental ECD spectra. Taberbufamines A and B possessed an uncommon skeleton incorporating an indolizidino [8,7-b]indole motif with a 2-hydroxymethyl-butyl group attached at the pyrrolidine ring. Biosynthetically, Taberbufamines A and B might be derived from iboga-type alkaloid through rearrangement. Vobatensine C showed significant bioactivity against A-549, Bel-7402, and HCT-116 cells with IC50 values of 2.61, 1.19, and 1.74 μM, respectively. Ervahanine A showed antimicrobial activity against Bacillus subtilis, Mycobacterium smegmatis, and Helicobacter pylori with MIC values of 4, 8, and 16 μg/mL, respectively. 19(S)-hydroxyibogamine was shown as butyrylcholinesterase inhibitor (IC50 of 20.06 μM) and α-glycosidase inhibitor (IC50 of 17.18 μM), while tabernamine, ervahanine B, and ervadivaricatine B only showed α-glycosidase inhibitory activities with IC50 values in the range of 0.95-4.61 μM.
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Affiliation(s)
- Shun-Qing Chen
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education and School of Pharmaceutical Sciences, Wuhan University, Wuhan, 430071, People's Republic of China
| | - Jia Jia
- Department of Pathogen Biology & Jiangsu Key Laboratory of Pathogen Biology & Helicobacter Pylori Research Centre, Nanjing Medical University, Nanjing, 211166, People's Republic of China
| | - Jing-Yao Hu
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education and School of Pharmaceutical Sciences, Wuhan University, Wuhan, 430071, People's Republic of China
| | - Jun Wu
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education and School of Pharmaceutical Sciences, Wuhan University, Wuhan, 430071, People's Republic of China
| | - Wen-Ting Sun
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education and School of Pharmaceutical Sciences, Wuhan University, Wuhan, 430071, People's Republic of China
| | - Mingxin Zheng
- Department of Pathogen Biology & Jiangsu Key Laboratory of Pathogen Biology & Helicobacter Pylori Research Centre, Nanjing Medical University, Nanjing, 211166, People's Republic of China
| | - Xi Wang
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education and School of Pharmaceutical Sciences, Wuhan University, Wuhan, 430071, People's Republic of China
| | - Kong-Kai Zhu
- College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao, 266042, People's Republic of China
| | - Cheng-Shi Jiang
- School of Biological Science and Technology, University of Jinan, Jinan, 250022, People's Republic of China
| | - Sheng-Ping Yang
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education and School of Pharmaceutical Sciences, Wuhan University, Wuhan, 430071, People's Republic of China
| | - Juan Zhang
- School of Biological Science and Technology, University of Jinan, Jinan, 250022, People's Republic of China.
| | - Shou-Bao Wang
- Beijing Key Laboratory of Drug Targets Identification and Drug Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, 100050, People's Republic of China.
| | - You-Sheng Cai
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education and School of Pharmaceutical Sciences, Wuhan University, Wuhan, 430071, People's Republic of China.
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Yi W, Adelakun TA, Bai X, Zhang Y, Hao X. Tabernaesine J, a Novel
Vincamine‐Type
Indole Alkaloid with 6/5/6/6/6/5/5
Heptacyclic‐Ring
System Scaffold from
Tabernaemontana pachysiphon. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202100634] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Wen‐Fang Yi
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences Kunming Yunnan 650201 China
| | - Tiwalade A. Adelakun
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences Kunming Yunnan 650201 China
| | - Xue Bai
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences Kunming Yunnan 650201 China
| | - Yu Zhang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences Kunming Yunnan 650201 China
| | - Xiao‐Jiang Hao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences Kunming Yunnan 650201 China
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Babiaka SB, Simoben CV, Abuga KO, Mbah JA, Karpoormath R, Ongarora D, Mugo H, Monya E, Cho-Ngwa F, Sippl W, Loveridge EJ, Ntie-Kang F. Alkaloids with Anti-Onchocercal Activity from Voacanga africana Stapf (Apocynaceae): Identification and Molecular Modeling. Molecules 2020; 26:E70. [PMID: 33375687 PMCID: PMC7795662 DOI: 10.3390/molecules26010070] [Citation(s) in RCA: 4] [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: 11/16/2020] [Revised: 12/16/2020] [Accepted: 12/22/2020] [Indexed: 12/13/2022] Open
Abstract
A new iboga-vobasine-type isomeric bisindole alkaloid named voacamine A (1), along with eight known compounds-voacangine (2), voacristine (3), coronaridine (4), tabernanthine (5), iboxygaine (6), voacamine (7), voacorine (8) and conoduramine (9)-were isolated from the stem bark of Voacangaafricana. The structures of the compounds were determined by comprehensive spectroscopic analyses. Compounds 1, 2, 3, 4, 6, 7 and 8 were found to inhibit the motility of both the microfilariae (Mf) and adult male worms of Onchocerca ochengi, in a dose-dependent manner, but were only moderately active on the adult female worms upon biochemical assessment at 30 μM drug concentrations. The IC50 values of the isolates are 2.49-5.49 µM for microfilariae and 3.45-17.87 µM for adult males. Homology modeling was used to generate a 3D model of the O. ochengi thioredoxin reductase target and docking simulation, followed by molecular dynamics and binding free energy calculations attempted to offer an explanation of the anti-onchocercal structure-activity relationship (SAR) of the isolated compounds. These alkaloids are new potential leads for the development of antifilarial drugs. The results of this study validate the traditional use of V. africana in the treatment of human onchocerciasis.
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Affiliation(s)
- Smith B. Babiaka
- Department of Chemistry, Faculty of Science, University of Buea, P.O. Box 63, Buea CM-00237, Cameroon;
- AgroEco Health Platform, International Institute of Tropical Agriculture, Cotonou, Abomey-Calavi BEN-00229, Benin
| | - Conrad V. Simoben
- Institute for Pharmacy, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Str. 3, 06120 Halle, Germany; (C.V.S.); (W.S.)
| | - Kennedy O. Abuga
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of Nairobi, Nairobi P.O. Box 19676–00202, Kenya; (K.O.A.); (D.O.); (H.M.)
| | - James A. Mbah
- Department of Chemistry, Faculty of Science, University of Buea, P.O. Box 63, Buea CM-00237, Cameroon;
| | - Rajshekhar Karpoormath
- Department of Pharmaceutical Chemistry, School of Chemistry, University of KwaZulu-Natal, Durban 4001, South Africa;
| | - Dennis Ongarora
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of Nairobi, Nairobi P.O. Box 19676–00202, Kenya; (K.O.A.); (D.O.); (H.M.)
| | - Hannington Mugo
- Department of Pharmaceutical Chemistry, School of Pharmacy, University of Nairobi, Nairobi P.O. Box 19676–00202, Kenya; (K.O.A.); (D.O.); (H.M.)
| | - Elvis Monya
- ANDI Centre of Excellence for Onchocerciasis Drug Research, Biotechnology Unit, Faculty of Science, University of Buea, P.O. Box 63, Buea CM-00237, Cameroon; (E.M.); (F.C.-N.)
| | - Fidelis Cho-Ngwa
- ANDI Centre of Excellence for Onchocerciasis Drug Research, Biotechnology Unit, Faculty of Science, University of Buea, P.O. Box 63, Buea CM-00237, Cameroon; (E.M.); (F.C.-N.)
| | - Wolfgang Sippl
- Institute for Pharmacy, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Str. 3, 06120 Halle, Germany; (C.V.S.); (W.S.)
| | - Edric Joel Loveridge
- Department of Chemistry, Swansea University, Singleton Park, Swansea SA2 8PP, UK
| | - Fidele Ntie-Kang
- Department of Chemistry, Faculty of Science, University of Buea, P.O. Box 63, Buea CM-00237, Cameroon;
- Institute for Pharmacy, Martin-Luther-Universität Halle-Wittenberg, Kurt-Mothes-Str. 3, 06120 Halle, Germany; (C.V.S.); (W.S.)
- Institute of Botany, Technical University of Dresden, 01217 Dresden, Germany
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10
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Tan CH, Sim DSY, Heng MP, Lim SH, Low YY, Kam TS, Sim KS. Evaluation of DNA Binding and Topoisomerase I Inhibitory Activities of 16’‐Decarbomethoxydihydrovoacamine from
Tabernaemontana corymbosa. ChemistrySelect 2020. [DOI: 10.1002/slct.202004153] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Chun Hoe Tan
- Institute of Biological Sciences Faculty of Science University of Malaya 50603 Kuala Lumpur Malaysia
| | - Dawn Su Yin Sim
- Department of Chemistry Faculty of Science University of Malaya 50603 Kuala Lumpur Malaysia
| | - Mok Piew Heng
- 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
| | - Kae Shin Sim
- Institute of Biological Sciences Faculty of Science University of Malaya 50603 Kuala Lumpur Malaysia
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11
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Yi WF, Ding X, Chen YZ, Adelakun TA, Zhang Y, Hao XJ. Tabernaesines A-I, Cytotoxic Aspidosperma-Aspidosperma-Type Bisindole Alkaloids from Tabernaemontana pachysiphon. JOURNAL OF NATURAL PRODUCTS 2020; 83:3215-3222. [PMID: 33112136 DOI: 10.1021/acs.jnatprod.9b00768] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Twenty-one aspidosperma-aspidosperma alkaloids, including the new tabernaesines A-J (1-9), were obtained from Tabernaemontana pachysiphon. The structures and absolute configurations were elucidated using HRMS and NMR experiments. Compounds 1-9 possessed a rare spiro heterocycle moiety between the monomeric units, while compounds 4 and 5 were characterized by an indole ring fused with an (N,N-diethyl)methyl amino group. Compounds 1, 5-7, 15, and 16 exhibited moderate cytotoxic potency against various human cancer cell lines at IC50 2.5-9.8 μM.
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Affiliation(s)
- Wen-Fang Yi
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - Xiao Ding
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - Yuan-Zhi Chen
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - Tiwalade A Adelakun
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - Yu Zhang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - Xiao-Jiang Hao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
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12
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Xu D, Xu Z. Indole Alkaloids with Potential Anticancer Activity. Curr Top Med Chem 2020; 20:1938-1949. [DOI: 10.2174/1568026620666200622150325] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 05/06/2020] [Accepted: 05/12/2020] [Indexed: 02/05/2023]
Abstract
Indole alkaloids, which are abundant in nature, are a significant source of pharmacologically
active compounds. Indole alkaloids have the potential to exert anticancer activity via various antiproliferative
mechanisms, and some of them, such as Vinblastine and Vincristinem, have already used in clinics
or under clinical evaluations for the treatment of cancers. Therefore, indole alkaloids occupy an important
position in the discovery of novel anticancer agents. This review emphasizes the recent development
of indole alkaloids as potential anticancer agents, their structure-activity relationship, and
mechanisms of action covering the articles published from 2015 to 2020.
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Affiliation(s)
- Dan Xu
- College of Pharmaceutical Sciences, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, China
| | - Zhi Xu
- College of Pharmaceutical Sciences, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, China
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13
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Zhang Y, Hu C. Anticancer activity of bisindole alkaloids derived from natural sources and synthetic bisindole hybrids. Arch Pharm (Weinheim) 2020; 353:e2000092. [PMID: 32468606 DOI: 10.1002/ardp.202000092] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 05/03/2020] [Accepted: 05/06/2020] [Indexed: 12/18/2022]
Abstract
The bisindole moiety, as a versatile pharmacophore, is one of the widespread heterocycles in naturally occurring and synthetic bioactive compounds. The bisindole alkaloids derived from natural sources possess structural and mechanistic diversity, and they were found to be generally more active than monoindole alkaloids against various cancer cell lines. Moreover, some bisindole alkaloids such as the tubulin inhibitors, vinorelbine and vinblastine, have already been approved for cancer therapy, suggesting that bisindole alkaloids are a significant source of anticancer agents and lead hits. Bisindole hybrids have the potential to overcome drug resistance, enhance efficiency, and reduce severe side effects. The bisindole-lactam hybrid midostaurin has already been approved for the treatment of adult patients with newly diagnosed acute myeloid leukemia who are FLT3 mutation-positive, highlighting the importance of bisindole hybrids in the development of novel anticancer agents. In this review, we present a brief account of the bisindole alkaloids derived from nature and of synthetic hybrids with potential anticancer activity developed in the recent 10 years.
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Affiliation(s)
- Yue Zhang
- Department of Oncology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Chunhong Hu
- Department of Oncology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
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14
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Zhang Y, Ding X, Yuan YX, Guo LL, Hao XJ. Cytotoxic Monoterpenoid Indole Alkaloids from Tabernaemontana corymbosa as Potent Autophagy Inhibitors by the Attenuation of Lysosomal Acidification. JOURNAL OF NATURAL PRODUCTS 2020; 83:1432-1439. [PMID: 32356659 DOI: 10.1021/acs.jnatprod.9b00856] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Twenty-six alkaloids, including the new taberines A-I (1-9), were obtained from Tabernaemontana corymbosa. The structures and absolute configurations were elucidated via MS, NMR, and ECD spectroscopic data analyses. Alkaloids 1-4 are new vobasinyl-ibogan alkaloids, and 1 is characterized by an unusual 1,3-oxazinane moiety. Alkaloids 4 and 16 exhibited moderate cytotoxic potency against various human cancer cell lines, while 4, 10, 11, 13, 14, and 16 showed attenuation of lysosomal acidification activity (EC50: 12.9-29.8 μM), thereby inhibiting autophagic flux.
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Affiliation(s)
- Yu Zhang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - Xiao Ding
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - Yu-Xi Yuan
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - Ling-Li Guo
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - Xiao-Jiang Hao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
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15
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Jia Y, Wen X, Gong Y, Wang X. Current scenario of indole derivatives with potential anti-drug-resistant cancer activity. Eur J Med Chem 2020; 200:112359. [PMID: 32531682 DOI: 10.1016/j.ejmech.2020.112359] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2020] [Revised: 04/09/2020] [Accepted: 04/16/2020] [Indexed: 02/07/2023]
Abstract
Cancer chemotherapy is frequently hampered by drug resistance, so the resistance to anticancer agents represents one of the major obstacles for the effective cancer treatment. Indole derivatives have the potential to act on diverse targets in cancer cells and exhibit promising activity against drug-resistant cancers. Moreover, some indole-containing compounds such as Semaxanib, Sunitinib, Vinorelbine, and Vinblastine have already been applied in clinics for various kinds of cancer even drug-resistant cancer therapy. Thus, indole derivatives are one of significant resources for the development of novel anti-drug-resistant cancer agents. This review focuses on the recent development of indole derivatives with potential therapeutic application for drug-resistant cancers, and the mechanisms of action, the critical aspects of design as well as structure-activity relationships, covering articles published from 2010 to 2020.
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Affiliation(s)
- Yanshu Jia
- Chongqing Institute of Engineering, Chongqing, 400056, China
| | - Xiaoyue Wen
- The Institute of Infection and Inflammation, China Three Gorges University, Yichang, Hubei, 443000, China
| | - Yufeng Gong
- The Second Affiliated Hospital of Mudanjiang Medical University, Mudanjiang, 157000, China
| | - Xuefeng Wang
- Department of Surgery, Zhuji Affiliated Hospital of Shaoxing University, Zhejiang Province, 311800, China.
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16
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Sim DSY, Navanesan S, Sim KS, Gurusamy S, Lim SH, Low YY, Kam TS. Conolodinines A-D, Aspidosperma- Aspidosperma Bisindole Alkaloids with Antiproliferative Activity from Tabernaemontana corymbosa. JOURNAL OF NATURAL PRODUCTS 2019; 82:850-858. [PMID: 30869890 DOI: 10.1021/acs.jnatprod.8b00919] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Examination of the EtOH extract of the leaves of the Malayan Tabernaemontana corymbosa resulted in the isolation of four new (1-4) and two known bisindole alkaloids (5, 6) of the Aspidosperma- Aspidosperma type. The structures of these alkaloids were determined based on analysis of the spectroscopic data (NMR and HRESIMS). X-ray diffraction analyses of the related bisindole alkaloids conophylline (5) and conophyllinine (6) established the absolute configurations. Treatment of the bisindole alkaloid conophylline (5) with benzeneselenic anhydride gave, in addition to the known bisindole polyervinine (7) previously isolated from another Malayan Tabernaemontana, another bisindole product, 8, an isolable tautomer of 7. X-ray diffraction analyses yielded the absolute configurations of both bisindoles and in addition showed that polyervinine (7) exists primarily as the neutral dione structure. The bisindoles (1-8) and the related conophylline-type bisindoles (9-13) showed pronounced in vitro growth inhibitory activity against an array of human cancer cell lines, including KB, vincristine-resistant KB, PC-3, LNCaP, MCF7, MDA-MB-231, A549, HT-29, and HCT 116 cells, with IC50 values for the active compounds in the 0.01-5 μM range.
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Affiliation(s)
- Dawn Su-Yin Sim
- Department of Chemistry, Faculty of Science , University of Malaya , 50603 Kuala Lumpur , Malaysia
| | - Suerialoasan Navanesan
- 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
| | - Subramaniam Gurusamy
- School of Chemical and Life Sciences , Nanyang Polytechnic , Singapore 569830 , Singapore
| | - 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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17
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Seong S, Lim H, Han S. Biosynthetically Inspired Transformation of Iboga to Monomeric Post-iboga Alkaloids. Chem 2019. [DOI: 10.1016/j.chempr.2018.10.009] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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18
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Cai YS, Sarotti AM, Zhou TL, Huang R, Qiu G, Tian C, Miao ZH, Mándi A, Kurtán T, Cao S, Yang SP. Flabellipparicine, a Flabelliformide-Apparicine-Type Bisindole Alkaloid from Tabernaemontana divaricata. JOURNAL OF NATURAL PRODUCTS 2018; 81:1976-1983. [PMID: 30169038 DOI: 10.1021/acs.jnatprod.8b00191] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Four new monoterpenoid bisindole alkaloids, flabellipparicine (1), 19,20-dihydrovobparicine (2), 10'-demethoxy-19,20-dihydrovobatensine D (3), and 3'-(2-oxopropyl)ervahanine A (4), and 10 known monoterpenoid indole alkaloids were isolated from the stems of Tabernaemontana divaricata. All structures were elucidated based on spectroscopic methods, and the absolute configuration of 1 was established using conformational analysis and TDDFT-ECD calculation of selected stereoisomers. Compound 1 represents the first flabelliformide-apparicine-type bisindole alkaloid, in which the flabelliformide-like unit connects to the apparicine-like unit with a C-3-C-22' bond and an N-1-C-16' bond to form an uncommon five-membered ring between the two monomers. All alkaloids were evaluated for their cytotoxicity against two human cancer cell lines, MCF-7 and A-549. Compounds 2, 4, and 14 exhibited cytotoxicity against MCF-7 and A-549 with IC50 values in the range of 2 nM to 8 μM.
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Affiliation(s)
- You-Sheng Cai
- Institute of TCM and Natural Products, School of Pharmaceutical Sciences , Wuhan University , 185 Donghu Road , Wuhan 430071 , People's Republic of China
- Department of Pharmaceutical Sciences, Daniel K. Inouye College of Pharmacy , University of Hawai'i at Hilo , 200 West Kawili Street , Hilo , Hawaii 96720 , United States
| | - Ariel M Sarotti
- Instituto de Química Rosario (CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas , Universidad Nacional de Rosario , Suipacha 531 , Rosario 2000 , Argentina
| | - Ting-Lan Zhou
- Institute of TCM and Natural Products, School of Pharmaceutical Sciences , Wuhan University , 185 Donghu Road , Wuhan 430071 , People's Republic of China
| | - Rong Huang
- Institute of TCM and Natural Products, School of Pharmaceutical Sciences , Wuhan University , 185 Donghu Road , Wuhan 430071 , People's Republic of China
| | - Guofu Qiu
- Institute of TCM and Natural Products, School of Pharmaceutical Sciences , Wuhan University , 185 Donghu Road , Wuhan 430071 , People's Republic of China
| | - Congkui Tian
- Wuling Mountain Institute of Natural Medicine, Hubei University for Nationalities, Key Laboratory of Biological Resources Protection and Utilization of Hubei Province , 39 Xueyuan Road , Enshi 445000 , People's Republic of China
| | - Ze-Hong Miao
- State Key Laboratory of Drug Research Institute of Materia Medica, Chinese Academy of Sciences , Zu Chong Zhi Road 555 Zhangjiang Hi-Tech Park , Shanghai 201203 , People's Republic of China
| | - Attila Mándi
- Department of Organic Chemistry , University of Debrecen , POB 400, H-4002 Debrecen , Hungary
| | - Tibor Kurtán
- Department of Organic Chemistry , University of Debrecen , POB 400, H-4002 Debrecen , Hungary
| | - Shugeng Cao
- Department of Pharmaceutical Sciences, Daniel K. Inouye College of Pharmacy , University of Hawai'i at Hilo , 200 West Kawili Street , Hilo , Hawaii 96720 , United States
| | - Sheng-Ping Yang
- Institute of TCM and Natural Products, School of Pharmaceutical Sciences , Wuhan University , 185 Donghu Road , Wuhan 430071 , People's Republic of China
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19
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Zhang Y, Yuan YX, Goto M, Guo LL, Li XN, Morris-Natschke SL, Lee KH, Hao XJ. Taburnaemines A-I, Cytotoxic Vobasinyl-Iboga-Type Bisindole Alkaloids from Tabernaemontana corymbosa. JOURNAL OF NATURAL PRODUCTS 2018; 81:562-571. [PMID: 29319316 PMCID: PMC7446768 DOI: 10.1021/acs.jnatprod.7b00949] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Nineteen vobasinyl-ibogan-type bisindole alkaloids, including nine new compounds, taburnaemines A-I (1-9), were isolated from the twigs and leaves of Tabernaemontana corymbosa. The structures and absolute configurations of the new alkaloids were determined by a combination of MS, NMR, and ECD analyses. Alkaloids 1-5 contain a rare 1,3-oxazinane moiety in the vobasinyl unit, while 6 has an uncommon 1,3-oxazolidine moiety in the iboga unit. The absolute configurations of alkaloid 1 and the known alkaloid tabernaecorymbosine A (10) were confirmed by single-crystal X-ray diffraction analysis. All of the bisindole alkaloids, except 2 and 16'-decarbomethoxytabernaecorymbosine A (14), showed antiproliferative activity (IC50 2.6-9.8 μM) against several human cancer cell lines, including A-549, MDA-MB-231, MCF-7, KB, and P-glycoprotein-overexpressing multidrug-resistant KB cells. The preliminary structure-activity relationship correlations are also discussed.
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Affiliation(s)
- Yu Zhang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, People’s Republic of China
| | - Yu-Xi Yuan
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, People’s Republic of China
| | - Masuo Goto
- Natural Product Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599-7568, United States
| | - Ling-Li Guo
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, People’s Republic of China
| | - Xiao-Nian Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, People’s Republic of China
| | - Susan L. Morris-Natschke
- Natural Product Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599-7568, United States
| | - Kuo-Hsiung Lee
- Natural Product Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, North Carolina 27599-7568, United States
- Chinese Medicine Research and Development Center, China Medical University and Hospital, 2 Yuh-Der Road, Taichung, 40447, Taiwan
| | - Xiao-Jiang Hao
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, People’s Republic of China
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20
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Yuan YX, Zhang Y, Guo LL, Wang YH, Goto M, Morris-Natschke SL, Lee KH, Hao XJ. Tabercorymines A and B, Two Vobasinyl-Ibogan-Type Bisindole Alkaloids from Tabernaemontana corymbosa. Org Lett 2017; 19:4964-4967. [PMID: 28876071 DOI: 10.1021/acs.orglett.7b02445] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Tabercorymines A (1) and B (2), two new vobasinyl-ibogan-type bisindole alkaloids with an unprecedented skeleton, were isolated from Tabernaemontana corymbosa. Their structures were established by a combination of spectroscopic data, chemical transformation, single-crystal X-ray diffraction, and ECD calculation. Compound 1 represents a novel bisindole alkaloid, characterized by a caged heteropentacyclic ring system incorporating an unprecedented C-7/C-20 bond in the vobasinyl unit. Alkaloids 1 and 2 showed potent antiproliferative activity against several human cancer cell lines, including vincristine-resistant KB.
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Affiliation(s)
- Yu-Xi Yuan
- Yunnan University of Traditional Chinese Medicine , Kunming 650500, China
| | | | | | | | - Masuo Goto
- Natural Product Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina , Chapel Hill, North Carolina 27599-7568, United States
| | - Susan L Morris-Natschke
- Natural Product Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina , Chapel Hill, North Carolina 27599-7568, United States
| | - Kuo-Hsiung Lee
- Natural Product Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina , Chapel Hill, North Carolina 27599-7568, United States.,Chinese Medicine Research and Development Center, China Medical University and Hospital , 2 Yuh-Der Road, Taichung 40447, Taiwan
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21
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Yan YM, Rao Y, Ding MW. One-Pot Synthesis of Indoles by a Sequential Ugi-3CR/Wittig Reaction Starting from Odorless Isocyanide-Substituted Phosphonium Salts. J Org Chem 2017; 82:2772-2776. [DOI: 10.1021/acs.joc.7b00004] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yan-Mei Yan
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Central China Normal University, Wuhan 430079, People’s Republic of China
| | - Yong Rao
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Central China Normal University, Wuhan 430079, People’s Republic of China
| | - Ming-Wu Ding
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, Central China Normal University, Wuhan 430079, People’s Republic of China
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22
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Suh YG, Lim C, Sim J, Lee JK, Surh YJ, Paek SM. Construction of the Azacyclic Core of Tabernaemontanine-Related Alkaloids via Tandem Reformatsky-Aza-Claisen Rearrangement. J Org Chem 2017; 82:1464-1470. [PMID: 28051867 DOI: 10.1021/acs.joc.6b02648] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
A divergent synthetic methodology for a tabernaemontanine-related alkaloid was developed. The synthetic route features practical improvements in the Pictet-Spengler cyclization for the tetrahydro-β-carboline intermediate and an unprecedented tandem Reformatsky-aza-Claisen rearrangement to create the core carbon skeleton and stereochemistries of tabernaemontanine-related alkaloids.
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Affiliation(s)
- Young-Ger Suh
- College of Pharmacy, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 151-742, Republic of Korea
| | - Changjin Lim
- College of Pharmacy, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 151-742, Republic of Korea
| | - Jaehoon Sim
- College of Pharmacy, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 151-742, Republic of Korea
| | - Jae Kyun Lee
- Neuro-Medicine Center, Korea Institute of Science and Technology , P.O. Box 131, Seoul 130-650, Republic of Korea
| | - Young-Joon Surh
- Tumor Microenvironment Global Core Research Center, College of Pharmacy, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 151-742, Republic of Korea
| | - Seung-Mann Paek
- College of Pharmacy, Research Institute of Pharmaceutical Science, Gyeongsang National University , Jinju daero, Jinju 660-751, Republic of Korea
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23
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Lavaud C, Massiot G. The Iboga Alkaloids. PROGRESS IN THE CHEMISTRY OF ORGANIC NATURAL PRODUCTS 2017; 105:89-136. [PMID: 28194562 DOI: 10.1007/978-3-319-49712-9_2] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Abstract
Iboga alkaloids are a particular class of indolomonoterpenes most often characterized by an isoquinuclidine nucleus. Their first occurrence was detected in the roots of Tabernanthe iboga, a sacred plant to the people of Gabon, which made it cult object. Ibogaine is the main representative of this class of alkaloids and its psychoactive properties are well documented. It has been proposed as a drug cessation treatment and has a wide range of activities in targeting opioids, cocaine, and alcohol. The purpose of this chapter is to provide a background on this molecule and related compounds and to update knowledge on the most recent advances made. Difficulties linked to the status of ibogaine as a drug in several countries have hampered its development, but 18-methoxycoronaridine is currently under evaluation for the same purposes and for the treatment of leishmaniasis. The chapter is divided into six parts: an introduction aiming at defining what is called an iboga alkaloid, and this is followed by current knowledge on their biosynthesis, which unfortunately remains a "black box" as far as the key construction step is concerned. Many of these alkaloids are still being discovered and the third and fourth parts of the chapter discuss the analytical tools in use for this purpose and give lists of new monomeric and dimeric alkaloids belonging to this class. When necessary, the structures are discussed especially with regard to absolute configuration determinations, which remain a point of weakness in their assignments. Part V gives an account of progress made in the synthesis, partial and total, which the authors believe is key to providing solid solutions to the industrial development of the most promising molecules. The last part of the chapter is devoted to the biological properties of iboga alkaloids, with particular emphasis on ibogaine and 18-methoxycoronaridine.
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Affiliation(s)
- Catherine Lavaud
- Faculty of Pharmacy, Université de Reims Champagne-Ardenne, Institut de Chimie Moléculaire de Reims, UMR CNRS 7312, Case postale 44, UFR des Sciences Exactes et Naturelles, BP 1039, 51687, Reims, Cedex 2, France.
| | - Georges Massiot
- Université de Reims Champagne-Ardenne, Institut de Chimie Moléculaire de Reims, UMR CNRS 7312, Case postale 44, UFR des Sciences Exactes et Naturelles, BP 1039, 51687, Reims, Cedex 2, France
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Nge CE, Sim KS, Lim SH, Thomas NF, Low YY, Kam TS. A Hexacyclic, Iboga-Derived Monoterpenoid Indole with a Contracted Tetrahydroazepine C-Ring and Incorporation of an Isoxazolidine Moiety, a Seco-Corynanthean, an Aspidosperma-Aspidosperma Bisindole with Anticancer Properties, and the Absolute Configuration of the Pyridopyrimidine Indole Alkaloid, Vernavosine. JOURNAL OF NATURAL PRODUCTS 2016; 79:2709-2717. [PMID: 27759387 DOI: 10.1021/acs.jnatprod.6b00674] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Examination of the EtOH extract of the Malayan Tabernaemontana corymbosa resulted in the isolation of three new alkaloids, viz., cononuridine (1), an unusual hexacyclic, iboga-derived, monoterpenoid indole characterized by contraction of the tetrahydroazepine C-ring and incorporation of an additional isoxazolidine ring, taberisidine (2), a seco-corynanthean alkaloid, and conofolidine (3), an Aspidosperma-Aspidosperma bisindole that showed pronounced in vitro growth inhibitory activity against an array of human cancer cell lines, including KB, vincristine-resistant KB, PC-3, LNCaP, MCF7, MDA-MB-231, HT-29, and HCT 116 cells. The structures and absolute configurations of 1 and 3 and the absolute configuration of the novel pyridopyrimidine indole alkaloid vernavosine (4) were confirmed by X-ray diffraction analysis. A reasonable biosynthesis route to cononuridine starting from an iboga precursor is presented.
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Affiliation(s)
- Choy-Eng Nge
- Department of Chemistry and ‡Institute of Biological Sciences, University of Malaya , 50603 Kuala Lumpur, Malaysia
| | - Kae-Shin Sim
- Department of Chemistry and ‡Institute of Biological Sciences, University of Malaya , 50603 Kuala Lumpur, Malaysia
| | - Siew-Huah Lim
- Department of Chemistry and ‡Institute of Biological Sciences, University of Malaya , 50603 Kuala Lumpur, Malaysia
| | - Noel F Thomas
- Department of Chemistry and ‡Institute of Biological Sciences, University of Malaya , 50603 Kuala Lumpur, Malaysia
| | - Yun-Yee Low
- Department of Chemistry and ‡Institute of Biological Sciences, University of Malaya , 50603 Kuala Lumpur, Malaysia
| | - Toh-Seok Kam
- Department of Chemistry and ‡Institute of Biological Sciences, University of Malaya , 50603 Kuala Lumpur, Malaysia
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