1
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Drummond GJ, Grant PS, Geurts AM, Furkert DP, Brimble MA. Synthesis of the bicyclic butenolide core of pallamolide A: a biomimetic approach. Org Biomol Chem 2024; 22:8032-8036. [PMID: 39259177 DOI: 10.1039/d4ob01380h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2024]
Abstract
Pallamolide A is a 7,8-seco-labdane terpenoid possessing a unique bicyclo[2.2.2]octane core and a spiro-butenolide moiety. A biomimetic synthesis of the bicyclic butenolide core over 10 steps is reported, featuring an unexpected autoxidation ring opening, and a vinylogous Mukaiyama aldol reaction which was spontaneously followed by an unusual intramolecular vinylogous aldol reaction to assemble the spiro-butenolide moiety and bicyclic core of pallamolide A.
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Affiliation(s)
- Grace J Drummond
- School of Chemical Sciences, The University of Auckland, 23 Symonds Street, Auckland, 1010, New Zealand.
| | - Phillip S Grant
- School of Chemical Sciences, The University of Auckland, 23 Symonds Street, Auckland, 1010, New Zealand.
| | - Alisha M Geurts
- School of Chemical Sciences, The University of Auckland, 23 Symonds Street, Auckland, 1010, New Zealand.
| | - Daniel P Furkert
- School of Chemical Sciences, The University of Auckland, 23 Symonds Street, Auckland, 1010, New Zealand.
- Maurice Wilkins Centre for Molecular Biodiversity, The University of Auckland, 3A Symonds Street, Auckland, 1010, New Zealand
| | - Margaret A Brimble
- School of Chemical Sciences, The University of Auckland, 23 Symonds Street, Auckland, 1010, New Zealand.
- Maurice Wilkins Centre for Molecular Biodiversity, The University of Auckland, 3A Symonds Street, Auckland, 1010, New Zealand
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2
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Zhang Y, Chen L, Jia Y. Total Synthesis of Pallamolides A-E. Angew Chem Int Ed Engl 2024; 63:e202319127. [PMID: 38504637 DOI: 10.1002/anie.202319127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 03/12/2024] [Accepted: 03/19/2024] [Indexed: 03/21/2024]
Abstract
We have achieved the first total synthesis of pallamolides A-E. Of these compounds, pallamolides B-E possess intriguing tetracyclic skeletons with novel intramolecular transesterifications. Key transformations include highly diastereoselective sequential Michael addition reactions to construct the bicyclo[2.2.2]octane core with the simultaneous generation of two quaternary carbon centers, a one-pot SmI2-mediated intramolecular ketyl-enoate cyclization/ketone reduction to generate the key oxabicyclo[3.3.1]nonane moiety, and an acid-mediated deprotection/oxa-Michael addition/β-hydroxy elimination cascade sequence to assemble the tetracyclic pallamolide skeleton. Kinetic resolution of ketone 14 through Corey-Bakshi-Shibata reduction enabled the asymmetric synthesis of pallamolides A-E.
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Affiliation(s)
- Yu Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, 38 Xueyuan Road, Beijing, 100191, P. R. China
| | - Lijun Chen
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, 38 Xueyuan Road, Beijing, 100191, P. R. China
| | - Yanxing Jia
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Chemical Biology Center, Peking University, 38 Xueyuan Road, Beijing, 100191, P. R. China
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3
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Zhang C, Li Y, Chu Z, Yuan S, Qiao Y, Zhang J, Li L, Zhang Y, Tian R, Tang Y, Lou H. Rearranged 19-nor-7,8-seco-labdane diterpenoids and Diels−Alder cycloadducts from the Chinese liverwort Pallavicinia ambigua: Structural elucidation, photoinduced rearrangement, and cytotoxic activity. CHINESE CHEM LETT 2023. [DOI: 10.1016/j.cclet.2023.108206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2023]
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4
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Liu SG, Zhang CY, Zhou JC, Han JJ, Zhu MZ, Zhang JZ, Li Y, Xu ZJ, Meng H, Wang X, Zong Y, Yuan SZ, Qiao YN, Tang YJ, Lou HX. Diels–Alder adducts of a labdane diterpenoid from the Chinese liverwort Pallavicinia subciliata. Org Chem Front 2022. [DOI: 10.1039/d1qo01891d] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A 7,8-seco-2,8-cyclolabdane diterpenoid, pallasubcin A (1), and three pallasubcin A-derived dimers, pallasubcins B–D (2–4), formed via a Diels–Alder reaction, were isolated from the Chinese liverwort Pallavicinia subciliata.
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Affiliation(s)
- Shu-Gong Liu
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmacy, Shandong University, 44 West Wenhua Road, Jinan, Shandong 250012, P.R. China
| | - Chun-Yang Zhang
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmacy, Shandong University, 44 West Wenhua Road, Jinan, Shandong 250012, P.R. China
| | - Jin-Chuan Zhou
- School of Pharmacy, Linyi University, Linyi 276000, P. R. China
| | - Jing-Jing Han
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmacy, Shandong University, 44 West Wenhua Road, Jinan, Shandong 250012, P.R. China
| | - Ming-Zhu Zhu
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmacy, Shandong University, 44 West Wenhua Road, Jinan, Shandong 250012, P.R. China
| | - Jiao-Zhen Zhang
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmacy, Shandong University, 44 West Wenhua Road, Jinan, Shandong 250012, P.R. China
| | - Yi Li
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmacy, Shandong University, 44 West Wenhua Road, Jinan, Shandong 250012, P.R. China
| | - Ze-Jun Xu
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmacy, Shandong University, 44 West Wenhua Road, Jinan, Shandong 250012, P.R. China
| | - Hui Meng
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmacy, Shandong University, 44 West Wenhua Road, Jinan, Shandong 250012, P.R. China
| | - Xue Wang
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmacy, Shandong University, 44 West Wenhua Road, Jinan, Shandong 250012, P.R. China
| | - Yan Zong
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmacy, Shandong University, 44 West Wenhua Road, Jinan, Shandong 250012, P.R. China
| | - Shuang-Zhi Yuan
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmacy, Shandong University, 44 West Wenhua Road, Jinan, Shandong 250012, P.R. China
| | - Ya-Nan Qiao
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmacy, Shandong University, 44 West Wenhua Road, Jinan, Shandong 250012, P.R. China
| | - Ya-Jie Tang
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao 266237, P. R. China
| | - Hong-Xiang Lou
- Key Laboratory of Chemical Biology (Ministry of Education), School of Pharmacy, Shandong University, 44 West Wenhua Road, Jinan, Shandong 250012, P.R. China
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5
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Zhang X, Wang Y, Chen P, Cai X, Jia Y. Protecting‐Group‐Free
Total Synthesis of (–)‐Pallambins A—D. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202100001] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Xiwu Zhang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University 38 Xueyuan Road Beijing 100191 China
| | - Yuan Wang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University 38 Xueyuan Road Beijing 100191 China
| | - Peng Chen
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University 38 Xueyuan Road Beijing 100191 China
| | - Xinxian Cai
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University 38 Xueyuan Road Beijing 100191 China
| | - Yanxing Jia
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University 38 Xueyuan Road Beijing 100191 China
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6
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Li H, Zhang J, She X. The Total Synthesis of Diquinane-Containing Natural Products. Chemistry 2021; 27:4839-4858. [PMID: 32955141 DOI: 10.1002/chem.202003741] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 09/15/2020] [Indexed: 12/18/2022]
Abstract
Diquinane or bicyclo[3.3.0]octane is a conspicuous structural unit existing in the carbo-frameworks of a wide range of natural products such as alkaloids and terpenoids. These diquinane-containing molecules not merely exhibit intriguing architectures, but also showcase a broad spectrum of significant bioactivities, which draw widespread attention from the global synthetic community. During the past decade, with an aim to accomplish the total syntheses of such specified cornucopias of natural products, a variety of elegant strategies for construction of the diquinane ring system have been disclosed. In this Minireview, the achievements on this subject in the timeline from 2010 to June 2020 are demonstrated and it is discussed how the diquinane unit is strategically forged in the context of the specific target structure. In addition, impacts of the selected works to the field of natural product total synthesis is highlighted and the particular outlook of diquinane-containing natural product synthesis is provided.
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Affiliation(s)
- Huilin Li
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, 222 South Tianshui Road, Lanzhou, 730000, Gansu, P. R. China
| | - Jing Zhang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, 222 South Tianshui Road, Lanzhou, 730000, Gansu, P. R. China
| | - Xuegong She
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, 222 South Tianshui Road, Lanzhou, 730000, Gansu, P. R. China
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7
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Grant PS, Brimble MA. seco-Labdanes: A Study of Terpenoid Structural Diversity Resulting from Biosynthetic C-C Bond Cleavage. Chemistry 2021; 27:6367-6389. [PMID: 33289161 DOI: 10.1002/chem.202004574] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Indexed: 11/08/2022]
Abstract
The cleavage of a C-C bond is a complexity generating process, which complements oxidation and cyclisation events in the biosynthesis of terpenoids. This process leads to increased structural diversity in a cluster of related secondary metabolites by modification of the parent carbocyclic core. In this review, we highlight the diversifying effect of C-C bond cleavage by examining the literature related to seco-labdanes-a class of diterpenoids arising from such C-C bond cleavage events.
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Affiliation(s)
- Phillip S Grant
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland, 1010, New Zealand.,Maurice Wilkins Centre for Molecular Biodiscovery, University of Auckland, 23 Symonds Street, Auckland, 1010, New Zealand
| | - Margaret A Brimble
- School of Chemical Sciences, University of Auckland, 23 Symonds Street, Auckland, 1010, New Zealand.,Maurice Wilkins Centre for Molecular Biodiscovery, University of Auckland, 23 Symonds Street, Auckland, 1010, New Zealand
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8
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Fernandes RA, Kumar P, Choudhary P. Advances in catalytic and protecting-group-free total synthesis of natural products: a recent update. Chem Commun (Camb) 2020; 56:8569-8590. [PMID: 32537619 DOI: 10.1039/d0cc02659j] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Catalytic processes in protecting-group-free syntheses of natural products are fast emerging towards achieving the goal of efficiency and economy in total synthesis. Present day sustainable development in synthesis of natural products does not permit the luxury of using stoichiometric reagents and protecting groups. Catalysis and step-economy can contribute significantly toward economy and efficiency of synthesis. This feature article details the ingenious efforts by many researchers in the last couple of years toward concise total syntheses, based on catalytic steps and protecting-group-free-strategies. These would again serve as guidelines in future development of reagents and catalysts aimed at achieving higher efficiency and chemoselectivity to the point that catalysis and protecting-group-free synthesis will be an accepted common practice.
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Affiliation(s)
- Rodney A Fernandes
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400 076, Maharashtra, India.
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9
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Li Y, Xu Z, Zhu R, Zhou J, Zong Y, Zhang J, Zhu M, Jin X, Qiao Y, Zheng H, Lou H. Probing the Interconversion of Labdane Lactones from the Chinese Liverwort Pallavicinia ambigua. Org Lett 2019; 22:510-514. [DOI: 10.1021/acs.orglett.9b04270] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Yi Li
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China
| | - Zejun Xu
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China
| | - Rongxiu Zhu
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
| | - Jinchuan Zhou
- School of Pharmacy, Linyi University, Linyi 276000, China
| | - Yan Zong
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China
| | - Jiaozhen Zhang
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China
| | - Mingzhu Zhu
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China
| | - Xueyang Jin
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China
| | - Yanan Qiao
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China
| | - Hongbo Zheng
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China
| | - Hongxiang Lou
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences, Shandong University, Jinan 250012, China
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10
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Zhang X, Cai X, Huang B, Guo L, Gao Z, Jia Y. Enantioselective Total Syntheses of Pallambins A–D. Angew Chem Int Ed Engl 2019; 58:13380-13384. [DOI: 10.1002/anie.201907523] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Indexed: 01/25/2023]
Affiliation(s)
- Xiwu Zhang
- State Key Laboratory of Natural and Biomimetic DrugsSchool of Pharmaceutical SciencesPeking University Xue Yuan Rd. 38 Beijing 100191 China
| | - Xinxian Cai
- State Key Laboratory of Natural and Biomimetic DrugsSchool of Pharmaceutical SciencesPeking University Xue Yuan Rd. 38 Beijing 100191 China
| | - Bin Huang
- State Key Laboratory of Natural and Biomimetic DrugsSchool of Pharmaceutical SciencesPeking University Xue Yuan Rd. 38 Beijing 100191 China
| | - Lei Guo
- State Key Laboratory of Natural and Biomimetic DrugsSchool of Pharmaceutical SciencesPeking University Xue Yuan Rd. 38 Beijing 100191 China
| | - Zhongrun Gao
- State Key Laboratory of Natural and Biomimetic DrugsSchool of Pharmaceutical SciencesPeking University Xue Yuan Rd. 38 Beijing 100191 China
| | - Yanxing Jia
- State Key Laboratory of Natural and Biomimetic DrugsSchool of Pharmaceutical SciencesPeking University Xue Yuan Rd. 38 Beijing 100191 China
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11
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Zhang X, Cai X, Huang B, Guo L, Gao Z, Jia Y. Enantioselective Total Syntheses of Pallambins A–D. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201907523] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Xiwu Zhang
- State Key Laboratory of Natural and Biomimetic DrugsSchool of Pharmaceutical SciencesPeking University Xue Yuan Rd. 38 Beijing 100191 China
| | - Xinxian Cai
- State Key Laboratory of Natural and Biomimetic DrugsSchool of Pharmaceutical SciencesPeking University Xue Yuan Rd. 38 Beijing 100191 China
| | - Bin Huang
- State Key Laboratory of Natural and Biomimetic DrugsSchool of Pharmaceutical SciencesPeking University Xue Yuan Rd. 38 Beijing 100191 China
| | - Lei Guo
- State Key Laboratory of Natural and Biomimetic DrugsSchool of Pharmaceutical SciencesPeking University Xue Yuan Rd. 38 Beijing 100191 China
| | - Zhongrun Gao
- State Key Laboratory of Natural and Biomimetic DrugsSchool of Pharmaceutical SciencesPeking University Xue Yuan Rd. 38 Beijing 100191 China
| | - Yanxing Jia
- State Key Laboratory of Natural and Biomimetic DrugsSchool of Pharmaceutical SciencesPeking University Xue Yuan Rd. 38 Beijing 100191 China
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12
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Berlinck RGS, Monteiro AF, Bertonha AF, Bernardi DI, Gubiani JR, Slivinski J, Michaliski LF, Tonon LAC, Venancio VA, Freire VF. Approaches for the isolation and identification of hydrophilic, light-sensitive, volatile and minor natural products. Nat Prod Rep 2019; 36:981-1004. [DOI: 10.1039/c9np00009g] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Water-soluble, volatile, minor and photosensitive natural products are yet poorly known, and this review discusses the literature reporting the isolation strategies for some of these metabolites.
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Affiliation(s)
| | - Afif F. Monteiro
- Instituto de Química de São Carlos
- Universidade de São Paulo
- São Carlos
- Brazil
| | - Ariane F. Bertonha
- Instituto de Química de São Carlos
- Universidade de São Paulo
- São Carlos
- Brazil
| | - Darlon I. Bernardi
- Instituto de Química de São Carlos
- Universidade de São Paulo
- São Carlos
- Brazil
| | - Juliana R. Gubiani
- Instituto de Química de São Carlos
- Universidade de São Paulo
- São Carlos
- Brazil
| | - Juliano Slivinski
- Instituto de Química de São Carlos
- Universidade de São Paulo
- São Carlos
- Brazil
| | | | | | - Victor A. Venancio
- Instituto de Química de São Carlos
- Universidade de São Paulo
- São Carlos
- Brazil
| | - Vitor F. Freire
- Instituto de Química de São Carlos
- Universidade de São Paulo
- São Carlos
- Brazil
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13
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Li G, Lou HX. Strategies to diversify natural products for drug discovery. Med Res Rev 2017; 38:1255-1294. [PMID: 29064108 DOI: 10.1002/med.21474] [Citation(s) in RCA: 164] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Revised: 09/18/2017] [Accepted: 09/28/2017] [Indexed: 12/11/2022]
Abstract
Natural product libraries contain specialized metabolites derived from plants, animals, and microorganisms that play a pivotal role in drug discovery due to their immense structural diversity and wide variety of biological activities. The strategies to greatly extend natural product scaffolds through available biological and chemical approaches offer unique opportunities to access a new series of natural product analogues, enabling the construction of diverse natural product-like libraries. The affordability of these structurally diverse molecules has been a crucial step in accelerating drug discovery. This review provides an overview of various approaches to exploit the diversity of compounds for natural product-based drug development, drawing upon a series of examples to illustrate each strategy.
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Affiliation(s)
- Gang Li
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao, China
| | - Hong-Xiang Lou
- Department of Natural Medicine and Pharmacognosy, School of Pharmacy, Qingdao University, Qingdao, China.,Department of Natural Products Chemistry, Key Lab of Chemical Biology of Ministry of Education, School of Pharmaceutical Sciences, Shandong University, Jinan, China
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14
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15
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Li RJ, Wang S, Li G, Zhou JC, Zhang JZ, Zhang YM, Shi GS, Lou HX. Four New Kaurane Diterpenoids from the Chinese Liverwort Jungermannia comata
Nees. Chem Biodivers 2016; 13:1685-1690. [PMID: 27448440 DOI: 10.1002/cbdv.201600123] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2016] [Accepted: 06/20/2016] [Indexed: 11/05/2022]
Affiliation(s)
- Rui-Juan Li
- State Key Laboratory of Microbial Technology; Shandong University-Helmholtz Institute of Biotechnology; School of Life Sciences; Shandong University; Shanda Nanlu 27 Jinan 250100 P. R. China
- Key Lab of Chemical Biology of Ministry of Education; Department of Natural Products Chemistry; School of Pharmaceutical Science; Shandong University; No. 44 West Wenhua Road Jinan 250012 P. R. China
| | - Song Wang
- Key Lab of Chemical Biology of Ministry of Education; Department of Natural Products Chemistry; School of Pharmaceutical Science; Shandong University; No. 44 West Wenhua Road Jinan 250012 P. R. China
- Shandong Institute for Food and Drug Control; No. 2749 Xinluo Road, New and High-tech Developing Zone Jinan 250101 P. R. China
| | - Gang Li
- Key Lab of Chemical Biology of Ministry of Education; Department of Natural Products Chemistry; School of Pharmaceutical Science; Shandong University; No. 44 West Wenhua Road Jinan 250012 P. R. China
| | - Jin-Chuan Zhou
- Key Lab of Chemical Biology of Ministry of Education; Department of Natural Products Chemistry; School of Pharmaceutical Science; Shandong University; No. 44 West Wenhua Road Jinan 250012 P. R. China
| | - Jiao-Zhen Zhang
- Key Lab of Chemical Biology of Ministry of Education; Department of Natural Products Chemistry; School of Pharmaceutical Science; Shandong University; No. 44 West Wenhua Road Jinan 250012 P. R. China
| | - You-Ming Zhang
- State Key Laboratory of Microbial Technology; Shandong University-Helmholtz Institute of Biotechnology; School of Life Sciences; Shandong University; Shanda Nanlu 27 Jinan 250100 P. R. China
| | - Guo-Sheng Shi
- Shandong Institute for Food and Drug Control; No. 2749 Xinluo Road, New and High-tech Developing Zone Jinan 250101 P. R. China
| | - Hong-Xiang Lou
- Key Lab of Chemical Biology of Ministry of Education; Department of Natural Products Chemistry; School of Pharmaceutical Science; Shandong University; No. 44 West Wenhua Road Jinan 250012 P. R. China
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16
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Zhou J, Zhang J, Li R, Liu J, Fan P, Li Y, Ji M, Dong Y, Yuan H, Lou H. Hapmnioides A-C, Rearranged Labdane-Type Diterpenoids from the Chinese Liverwort Haplomitrium mnioides. Org Lett 2016; 18:4274-6. [PMID: 27513610 DOI: 10.1021/acs.orglett.6b01854] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Many exceptional labdane-type diterpenoids have been exclusively found in liverworts, which serve as taxonomic molecules or play important ecological roles in interactions among organisms. Three unprecedented labdane-type diterpenoids hapmnioides A (1), B (2), and C (3) formed through cascade rearrangement from the Chinese liverwort Haplomitrium mnioides are reported. Their structures were established by comprehensive spectroscopic analysis coupled with single-crystal X-ray diffraction, and their anti-inflammatory activities were also preliminarily tested.
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Affiliation(s)
- Jinchuan Zhou
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences and ‡Department of Biochemistry and Molecular Biology, School of Medicine, Shandong University , No. 44 West Wenhua Road, Jinan 250012, P. R. China
| | - Jiaozhen Zhang
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences and ‡Department of Biochemistry and Molecular Biology, School of Medicine, Shandong University , No. 44 West Wenhua Road, Jinan 250012, P. R. China
| | - Ruijuan Li
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences and ‡Department of Biochemistry and Molecular Biology, School of Medicine, Shandong University , No. 44 West Wenhua Road, Jinan 250012, P. R. China
| | - Jun Liu
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences and ‡Department of Biochemistry and Molecular Biology, School of Medicine, Shandong University , No. 44 West Wenhua Road, Jinan 250012, P. R. China
| | - Peihong Fan
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences and ‡Department of Biochemistry and Molecular Biology, School of Medicine, Shandong University , No. 44 West Wenhua Road, Jinan 250012, P. R. China
| | - Yi Li
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences and ‡Department of Biochemistry and Molecular Biology, School of Medicine, Shandong University , No. 44 West Wenhua Road, Jinan 250012, P. R. China
| | - Mei Ji
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences and ‡Department of Biochemistry and Molecular Biology, School of Medicine, Shandong University , No. 44 West Wenhua Road, Jinan 250012, P. R. China
| | - Yiwen Dong
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences and ‡Department of Biochemistry and Molecular Biology, School of Medicine, Shandong University , No. 44 West Wenhua Road, Jinan 250012, P. R. China
| | - Huiqing Yuan
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences and ‡Department of Biochemistry and Molecular Biology, School of Medicine, Shandong University , No. 44 West Wenhua Road, Jinan 250012, P. R. China
| | - Hongxiang Lou
- Department of Natural Products Chemistry, Key Lab of Chemical Biology (MOE), School of Pharmaceutical Sciences and ‡Department of Biochemistry and Molecular Biology, School of Medicine, Shandong University , No. 44 West Wenhua Road, Jinan 250012, P. R. China
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Martinez L, Umemiya S, Wengryniuk SE, Baran PS. 11-Step Total Synthesis of Pallambins C and D. J Am Chem Soc 2016; 138:7536-9. [PMID: 27284962 PMCID: PMC4919752 DOI: 10.1021/jacs.6b04816] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2016] [Indexed: 11/30/2022]
Abstract
The structurally intriguing terpenes pallambins C and D have been assembled in only 11 steps from a cheap commodity chemical: furfuryl alcohol. This synthesis, which features a redox-economic approach free of protecting-group manipulations, assembles all four-ring systems via a sequential cyclization strategy. Of these four-ring constructing operations, two are classical (Robinson annulation and Mukaiyama aldol) and two are newly devised. During the course of this work a method for the difunctionalization of enol ethers was developed, and the scope of this transformation was explored.
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Affiliation(s)
| | | | | | - Phil S. Baran
- Department
of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
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