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Yang H, Zhang J, Zhang S, Xue Z, Hu S, Chen Y, Tang Y. Chiral Bisphosphine-Catalyzed Asymmetric Staudinger/aza-Wittig Reaction: An Enantioselective Desymmetrizing Approach to Crinine-Type Amaryllidaceae Alkaloids. J Am Chem Soc 2024; 146:14136-14148. [PMID: 38642063 DOI: 10.1021/jacs.4c02755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/22/2024]
Abstract
An unprecedented chiral bisphosphine-catalyzed asymmetric Staudinger/aza-Wittig reaction of 2,2-disubstituted cyclohexane-1,3-diones is reported, enabling the facile access of a broad range of cis-3a-arylhydroindoles in high yields with excellent enantioselectivities. The key to the success of this work relies on the first application of chiral bisphosphine DuanPhos to the asymmetric Staudinger/aza-Wittig reaction. An effective reductive system has been established to address the challenging PV═O/PIII redox cycle associated with the chiral bisphosphine catalyst. In addition, comprehensive experimental and computational investigations were carried out to elucidate the mechanism of the asymmetric reaction. Leveraging the newly developed chemistry, the enantioselective total syntheses of several crinine-type Amaryllidaceae alkaloids, including (+)-powelline, (+)-buphanamine, (+)-vittatine, and (+)-crinane, have been accomplished with remarkable conciseness and efficiency.
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Affiliation(s)
- Hongzhi Yang
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China
| | - Jingyang Zhang
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China
| | - Sen Zhang
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China
| | - Zhengwen Xue
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China
| | - Shengkun Hu
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China
| | - Yi Chen
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China
| | - Yefeng Tang
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China
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2
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Yang F, Xie JH, Zhou QL. Highly Efficient Asymmetric Hydrogenation Catalyzed by Iridium Complexes with Tridentate Chiral Spiro Aminophosphine Ligands. Acc Chem Res 2023; 56:332-349. [PMID: 36689780 DOI: 10.1021/acs.accounts.2c00764] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
ConspectusCatalytic asymmetric hydrogenation is one of the most reliable, powerful, and environmentally benign methods for the synthesis of chiral molecules with high atom economy and has been successfully applied in the industrial production of pharmaceuticals, agrochemicals, and fragrances. The key to achieving highly efficient and highly enantioselective hydrogenation reactions is the design and synthesis of chiral catalysts.Our recent studies involving iridium complexes of bidentate chiral spiro aminophosphine ligands (Ir-SpiroAP) have revealed that adding another coordinating group on the nitrogen atom to form a tridentate ligand can provide catalysts with markedly higher stability, enantioselectivity, and efficiency. Specifically, chiral Ir-SpiroAP catalysts bearing an added pyridine group (designated Ir-SpiroPAP) exhibit high activity and excellent enantioselectivity in the asymmetric hydrogenation of a wide range of carbonyl compounds, including aryl ketones, β- and δ-ketoesters, α,β-unsaturated ketones and esters, and racemic α-substituted lactones, as well as highly electron-deficient alkenes such as α,β-unsaturated malonates and analogues. The efficiency of the Ir-SpiroPAP catalysts is extremely high: in the hydrogenation of aryl ketones, turnover numbers reach 4.5 million, which is the highest value reported to date for a molecular catalyst. Moreover, when a thioether or a bulky triarylphosphine group is added to afford tridentate ligands designated SpiroSAP and SpiroPNP, respectively, the resulting iridium catalysts show high efficiency and enantioselectivity for asymmetric hydrogenation of β-alkyl-β-ketoesters and dialkyl ketones, which are challenging substrates. Furthermore, chiral spiro catalysts containing an added oxazoline moiety (Ir-SpiroOAP) show high enantioselectivity for asymmetric hydrogenation of α-keto amides and racemic α-aryloxy lactones. The above-described catalysts have been used for enantioselective synthesis of chiral pharmaceuticals and other bioactive compounds.We have shown that chiral spiro ligands that combine a rigid skeleton with tridentate coordination stabilize iridium catalysts. The careful tailoring of the substituents on the ligand creates a chiral environment around the active metal center of the catalyst that can precisely discriminate between the two faces of a substrate carbonyl group. These factors are key for controlling the activity, enantioselectivity, and turnover numbers of asymmetric hydrogenation catalysts. We expect that catalysts based on iridium, and other transition metals, coordinated by tridentate chiral ligands with a rigid skeleton will find more applications in asymmetric hydrogenation and other asymmetric transformations.
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Affiliation(s)
- Fan Yang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94 Weijin Road, Tianjin300071, China
| | - Jian-Hua Xie
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94 Weijin Road, Tianjin300071, China
| | - Qi-Lin Zhou
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, 94 Weijin Road, Tianjin300071, China
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Chaichompoo W, Rojsitthisak P, Pabuprapap W, Siriwattanasathien Y, Yotmanee P, Suksamrarn A. Alkaloids with cholinesterase inhibitory activities from the bulbs of Crinum × amabile Donn ex Ker Gawl. PHYTOCHEMISTRY 2023; 205:113473. [PMID: 36244402 DOI: 10.1016/j.phytochem.2022.113473] [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: 05/11/2022] [Revised: 09/01/2022] [Accepted: 10/10/2022] [Indexed: 06/16/2023]
Abstract
Seven previously undescribed alkaloids, crinamabilines A-G, two non-alkaloidal compounds, crinamabidiene and 6-phenylpiperonyl alcohol, two first naturally occurring alkaloids, 3-epibuphanisine and (+)-1β,2β-epoxy-epicrinine, together with nineteen known alkaloids, were isolated from the bulbs of Crinum × amabile Donn ex Ker Gawl. Their structures and absolute configurations were elucidated by NMR, MS and ECD spectroscopic techniques. Ungeremine displayed the most potent inhibitory activity against acetylcholinesterase (IC50 0.21 μM), which was about 6-fold more active than the reference drug, galanthamine (IC50 1.23 μM). Ungeremine also exhibited the strongest inhibitory activity against butyrylcholinesterase (IC50 3.57 μM), which was comparable to galanthamine (IC50 3.11 μM). The molecular docking studies were performed and were well in agreement with the experimental results.
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Affiliation(s)
- Waraluck Chaichompoo
- Department of Food and Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, 10330, Thailand; Center of Excellence in Natural Products for Aging and Chronic Diseases, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Pornchai Rojsitthisak
- Department of Food and Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok, 10330, Thailand; Center of Excellence in Natural Products for Aging and Chronic Diseases, Chulalongkorn University, Bangkok, 10330, Thailand.
| | - Wachirachai Pabuprapap
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Ramkhamhaeng University, Bangkok, 10240, Thailand
| | - Yuttana Siriwattanasathien
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Ramkhamhaeng University, Bangkok, 10240, Thailand
| | - Pathumwadee Yotmanee
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Ramkhamhaeng University, Bangkok, 10240, Thailand
| | - Apichart Suksamrarn
- Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Ramkhamhaeng University, Bangkok, 10240, Thailand
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4
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Bailly C. Naming of new natural products: Standard, pitfalls and tips-and-tricks. PHYTOCHEMISTRY 2022; 200:113250. [PMID: 35598790 DOI: 10.1016/j.phytochem.2022.113250] [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: 04/05/2022] [Revised: 05/13/2022] [Accepted: 05/14/2022] [Indexed: 06/15/2023]
Abstract
Naming a newly discovered natural product (NP) is a pleasant but difficult exercise. In most cases, the NP name will be given with reference to the species of origin, be it a plant, a marine organism, a mammalian or microbial species. For a long time, the use of biologically-based trivial names has been recommended to identify the parental linkage between the product and the originating genus or species. But the recommendation is not always followed and a multiplicity of trivial names have been attributed to NP, based on locations (country, region, city), foods, music, animals, forenames, etc. Tips-and-tricks associated with the naming of NP are underlined here. Usually, NP are differentiated across a homogeneous chemical series with a letter (from the Latin or Greek alphabet), followed or not with a number. In other cases, the change of a single letter distinguishes a series of NP. Common pitfalls associated with the naming of NP are enumerated, including the complexity of names, use of synonyms, duplicated names, confusing names and inappropriate terminology. The difficulties regularly encountered with the naming of NP are discussed. Four essential recommendations are recalled: (i) a thorough analysis of the existing products to avoid duplicated names and confusion, (ii) the use of a biologically-based trivial name to retrace the origin of the product, (iii) the strict adherence to the codes of chemical nomenclature, and (iv) the preference for simple names to facilitate transmission. Naming a new NP is a rewarding task, which shall be performed with all due skill, care and diligence.
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Affiliation(s)
- Christian Bailly
- OncoWitan, Scientific Consulting Office, Lille, Wasquehal, 59290, France.
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5
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Jian K, Li B, Zhu S, Xuan Q, Song Q. Chemoselective reduction of α,β-unsaturated ketones to allylic alcohols under catalyst-free conditions. Org Chem Front 2022. [DOI: 10.1039/d1qo01754c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A strategy of chemoselective reduction of α, β-unsaturated ketones was developed in our group. H3N·BH3 would prefer to coordinate with CO bond, forming six-membered ring, and ketones were hydrogenated via concerted double-hydrogen-transfer process.
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Affiliation(s)
- Kaixia Jian
- Institute of Next Generation Matter Transformation, College of Material Sciences Engineering at Huaqiao University, 668 Jimei Boulevard, Xiamen, Fujian, 361021, China
| | - Bingnan Li
- Institute of Next Generation Matter Transformation, College of Material Sciences Engineering at Huaqiao University, 668 Jimei Boulevard, Xiamen, Fujian, 361021, China
| | - Shuxian Zhu
- Institute of Next Generation Matter Transformation, College of Material Sciences Engineering at Huaqiao University, 668 Jimei Boulevard, Xiamen, Fujian, 361021, China
| | - Qingqing Xuan
- Institute of Next Generation Matter Transformation, College of Material Sciences Engineering at Huaqiao University, 668 Jimei Boulevard, Xiamen, Fujian, 361021, China
| | - Qiuling Song
- Institute of Next Generation Matter Transformation, College of Material Sciences Engineering at Huaqiao University, 668 Jimei Boulevard, Xiamen, Fujian, 361021, China
- Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, Guangdong, China
- State Key Laboratory of Organometallic Chemistry and Key Laboratory of Organo-fluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007
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6
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Affiliation(s)
- Yi‐Ching Lin
- Department of Applied Chemistry National Yang Ming Chiao Tung University Hsinchu Taiwan
| | - Yen‐Ku Wu
- Department of Applied Chemistry National Yang Ming Chiao Tung University Hsinchu Taiwan
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7
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Wang H, Wen J, Zhang X. Chiral Tridentate Ligands in Transition Metal-Catalyzed Asymmetric Hydrogenation. Chem Rev 2021; 121:7530-7567. [PMID: 34014646 DOI: 10.1021/acs.chemrev.1c00075] [Citation(s) in RCA: 79] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Asymmetric hydrogenation (AH) of double bonds has been one of the most effective methods for the preparation of chiral molecules and for the synthesis of important chiral building blocks. In the past 60 years, noble metals with bidentate ligands have shown marvelous reactivity and enantioselectivity in asymmetric hydrogenation of a series of prochiral substrates. In recent years, developing chiral tridentate ligands has played an increasingly important role in AH. With modular frameworks and a variety of functionalities on the side arms, chiral tridentate ligand complexes enable both reactivities and stereoselectivities. Although great achievements have been made for noble metal catalysts with chiral tridentate ligands since the 1990s, the design of chiral tridentate ligands for earth abundant metal catalysts has still been in high demand. This review summarizes the development of chiral tridentate ligands for homogeneous asymmetric hydrogenation. The philosophy of ligand design and the reaction mechanisms are highlighted and discussed as well.
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Affiliation(s)
- Heng Wang
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China.,Department of Chemistry, Temple University, Philadelphia, Pennsylvania 19122, United States
| | - Jialin Wen
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China.,Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen 518055, China
| | - Xumu Zhang
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
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Zhang K, Zhang X, Chen J, Liu Z, Pan C, Zhu Y, Wu S, Fan B. Palladium/Zinc Co-Catalyzed Asymmetric Hydrogenation of γ-Keto Carboxylic Acids. Chem Asian J 2021; 16:1229-1232. [PMID: 33852193 DOI: 10.1002/asia.202100244] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Revised: 04/12/2021] [Indexed: 12/23/2022]
Abstract
A palladium-catalyzed asymmetric hydrogenation of levulinic acid has been successful developed by using Zn(OTf)2 as co-catalyst. The present method not only has provided a strategy in the palladium-catalyzed asymmetric hydrogenation of ketone, but also allowed the preparation of a wide range of chiral γ-valerolactones in good yields with excellent enantioselectivities.
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Affiliation(s)
- Keyang Zhang
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, Yunnan Minzu University), State Ethnic Affairs Commission & Ministry of Education, Kunming, 650500, P. R. China
| | - Xuexin Zhang
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, Yunnan Minzu University), State Ethnic Affairs Commission & Ministry of Education, Kunming, 650500, P. R. China
| | - Jingchao Chen
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, Yunnan Minzu University), State Ethnic Affairs Commission & Ministry of Education, Kunming, 650500, P. R. China
| | - Zixiu Liu
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, Yunnan Minzu University), State Ethnic Affairs Commission & Ministry of Education, Kunming, 650500, P. R. China
| | - Chunxiang Pan
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, Yunnan Minzu University), State Ethnic Affairs Commission & Ministry of Education, Kunming, 650500, P. R. China
| | - Yuanbin Zhu
- Yunnan Tiefeng High Tech Mining Chemicals Co.Ltd, Qingfeng industrial park, Lufeng, 651200, P. R China
| | - Shiyuan Wu
- Yunnan Tiefeng High Tech Mining Chemicals Co.Ltd, Qingfeng industrial park, Lufeng, 651200, P. R China
| | - Baomin Fan
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, Yunnan Minzu University), State Ethnic Affairs Commission & Ministry of Education, Kunming, 650500, P. R. China
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Bin HY, Cheng L, Wu X, Zhu CL, Yang XH, Xie JH, Zhou QL. Asymmetric hydrogenation of exocyclic γ,δ-unsaturated β-ketoesters to functionalized chiral allylic alcohols via dynamic kinetic resolution. Chem Sci 2021; 12:7793-7799. [PMID: 34168833 PMCID: PMC8188505 DOI: 10.1039/d1sc02044g] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 04/28/2021] [Indexed: 12/15/2022] Open
Abstract
An iridium catalyzed asymmetric hydrogenation of racemic exocyclic γ,δ-unsaturated β-ketoesters via dynamic kinetic resolution to functionalized chiral allylic alcohols was developed. With the chiral spiro iridium catalysts Ir-SpiroPAP, a series of racemic exocyclic γ,δ-unsaturated β-ketoesters bearing a five-, six-, or seven-membered ring were hydrogenated to the corresponding functionalized chiral allylic alcohols in high yields with good to excellent enantioselectivities (87 to >99% ee) and cis-selectivities (93 : 7 to >99 : 1). The origin of the excellent stereoselectivity was also rationalized by density functional theory calculations. Furthermore, this protocol could be performed on gram scale and at a lower catalyst loading (0.002 mol%) without the loss of reactivity and enantioselectivity, and has been successfully applied in the enantioselective synthesis of chiral carbocyclic δ-amino esters and the β-galactosidase inhibitor isogalactofagomine.
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Affiliation(s)
- Huai-Yu Bin
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 China
| | - Li Cheng
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 China
| | - Xiong Wu
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 China
| | - Chang-Liang Zhu
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 China
| | - Xiao-Hui Yang
- Advanced Research Institute of Multidisciplinary Science, School of Chemistry and Chemical Engineering, Beijing Institute of Technology Beijing 100081 China
| | - Jian-Hua Xie
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 China
| | - Qi-Lin Zhou
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University Tianjin 300071 China
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Saini G, Kapur M. Palladium-catalyzed functionalizations of acidic and non-acidic C(sp 3)-H bonds - recent advances. Chem Commun (Camb) 2021; 57:1693-1714. [PMID: 33492315 DOI: 10.1039/d0cc06892f] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A tremendous upsurge has been seen in the recent decade for the proximal and remote functionalization of activated and unactivated substrates via palladium redox pathways. This feature article discusses some of the recent reports on direct as well as indirect C(sp3)-H functionalization via cross-coupling reactions under palladium catalysis. Activated substrates (possessing acidic C(sp3)-H) including enones, ketones, aldehydes, silylenol ethers, esters, silyl ketene acetals, amides, cyano, α-amino esters, and O-carbamates, capable of undergoing cross-coupling reactions at the α-, β-, γ-, δ- and ε-positions, will be discussed. To overcome the challenging task of achieving regioselectivity, a variety of innovative modifications have been reported. The reports of C-H activations based on directing group, and as native functionality have been illustrated at the β-, γ- and δ-positions. Substrates such as α-amino esters, carbonyls, carboxylic acids and their derivatives, afford site-selective C(sp3)-H functionalization via varied-sized reactive metallacycles and are a unique class of substrates whose C(sp3)-H functionalizations were earlier considered as very difficult.
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Affiliation(s)
- Gaurav Saini
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, MP, India.
| | - Manmohan Kapur
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, MP, India.
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Hu N, White LV, Lan P, Banwell MG. The Chemical Synthesis of the Crinine and Haemanthamine Alkaloids: Biologically Active and Enantiomerically-Related Systems that Serve as Vehicles for Showcasing New Methodologies for Molecular Assembly. Molecules 2021; 26:molecules26030765. [PMID: 33540725 PMCID: PMC7867252 DOI: 10.3390/molecules26030765] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 01/14/2021] [Accepted: 01/15/2021] [Indexed: 11/16/2022] Open
Abstract
The title alkaloids, often referred to collectively as crinines, are a prominent group of structurally distinct natural products with additional members being reported on a regular basis. As such, and because of their often notable biological properties, they have attracted attention as synthetic targets since the mid-1950s. Such efforts continue unabated and more recent studies on these alkaloids have focused on using them as vehicles for showcasing the utility of new synthetic methods. This review provides a comprehensive survey of the nearly seventy-year history of these synthetic endeavors.
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Wang W, Dai J, Yang Q, Deng YH, Peng F, Shao Z. Palladium-Catalyzed Asymmetric Direct Intermolecular Allylation of α-Aryl Cyclic Vinylogous Esters: Divergent Synthesis of (+)-Oxomaritidine and (−)-Mesembrine. Org Lett 2021; 23:920-924. [DOI: 10.1021/acs.orglett.0c04125] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Wei Wang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, and School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Jun Dai
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, and School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Qiqiong Yang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, and School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Yu-Hua Deng
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, and School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Fangzhi Peng
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, and School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
| | - Zhihui Shao
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education, Yunnan Provincial Center for Research & Development of Natural Products, and School of Chemical Science and Technology, Yunnan University, Kunming 650091, China
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14
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Bin H, Cheng L, Yang X, Xie J, Zhou Q. Enantioselective Construction of the Pyridine-Fused Chiral Bicyclo- [3.3.1]nonane Skeleton of Huperzine A and Its Analogues. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202105059] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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15
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Development of unique dianionic Ir(III) CCC pincer complexes with a favourable spirocyclic NHC framework. Sci China Chem 2020. [DOI: 10.1007/s11426-020-9875-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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16
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Pu LY, Yang F, Chen JQ, Xiong Y, Bin HY, Xie JH, Zhou QL. Enantioselective Total Syntheses of Pentacyclic Homoproaporphine Alkaloids. Org Lett 2020; 22:7526-7530. [PMID: 32937077 DOI: 10.1021/acs.orglett.0c02720] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Herein we report the first enantioselective total syntheses of pentacyclic homoproaporphine alkaloids by means of a route, which includes a tandem retro-oxa-Michael addition and nucleophilic substitution to generate the oxa-benzobicyclco[3.3.1]nonane core structure, a Pictet-Spengler cyclization to construct the fused B and C rings, and sequential Baeyer-Villiger oxidation and pinacol-type cyclization to install the hydroxyl-lactol moiety of D ring. With this unified route, six pentacyclic homoproaporphine alkaloids have been synthesized enantioselectively.
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Affiliation(s)
- Liu-Yang Pu
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Fan Yang
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Ji-Qiang Chen
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Ying Xiong
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Huai-Yu Bin
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Jian-Hua Xie
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Qi-Lin Zhou
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
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Zhang H, Chen P, Yang H, Ma S, Wang Z, Xie X, Wang X, Li H, She X. A Strategy to Construct cis-Hydrocarbazole via Nickel/Lewis Acid Dual-Catalyzed Arylcyanation. J Org Chem 2020; 85:3954-3962. [DOI: 10.1021/acs.joc.9b03243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hao Zhang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, 222 TianShui South Road, Lanzhou 730000, China
| | - Peiqi Chen
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, 222 TianShui South Road, Lanzhou 730000, China
| | - Hesi Yang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, 222 TianShui South Road, Lanzhou 730000, China
| | - Shiqiang Ma
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, 222 TianShui South Road, Lanzhou 730000, China
| | - Zemin Wang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, 222 TianShui South Road, Lanzhou 730000, China
| | - Xingang Xie
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, 222 TianShui South Road, Lanzhou 730000, China
| | - Xiaolei Wang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, 222 TianShui South Road, Lanzhou 730000, China
| | - Huilin Li
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, 222 TianShui South Road, Lanzhou 730000, China
| | - Xuegong She
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, 222 TianShui South Road, Lanzhou 730000, China
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18
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Hua YY, Bin HY, Wei T, Cheng HA, Lin ZP, Fu XF, Li YQ, Xie JH, Yan PC, Zhou QL. Iridium-Catalyzed Asymmetric Hydrogenation of γ- and δ-Ketoacids for Enantioselective Synthesis of γ- and δ-Lactones. Org Lett 2020; 22:818-822. [PMID: 31961159 DOI: 10.1021/acs.orglett.9b04253] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A highly efficient asymmetric hydrogenation of γ- and δ-ketoacids was developed by using a chiral spiro iridium catalyst (S)-1a, affording the optically active γ- and δ-hydroxy acids/lactones in high yields with excellent enantioselectivities (up to >99% ee) and turnover numbers (TON up to 100000). This protocol provides an efficient and practical method for enantioselective synthesis of Ezetimibe.
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Affiliation(s)
- Yun-Yu Hua
- Zhejiang Raybow Pharmaceutical Co., Ltd. , No. 18 Nanyangsan Road , Linhai, Taizhou City , Zhejiang Province 318000 , People's Republic of China
| | - Huai-Yu Bin
- State Key Laboratory and Institute of Elemento-organic Chemistry, College of Chemistry , Nankai University , Tianjin 300071 , People's Republic of China
| | - Tao Wei
- State Key Laboratory and Institute of Elemento-organic Chemistry, College of Chemistry , Nankai University , Tianjin 300071 , People's Republic of China
| | - Hou-An Cheng
- Zhejiang Raybow Pharmaceutical Co., Ltd. , No. 18 Nanyangsan Road , Linhai, Taizhou City , Zhejiang Province 318000 , People's Republic of China
| | - Zu-Peng Lin
- Zhejiang Raybow Pharmaceutical Co., Ltd. , No. 18 Nanyangsan Road , Linhai, Taizhou City , Zhejiang Province 318000 , People's Republic of China
| | - Xing-Feng Fu
- Zhejiang Raybow Pharmaceutical Co., Ltd. , No. 18 Nanyangsan Road , Linhai, Taizhou City , Zhejiang Province 318000 , People's Republic of China
| | - Yuan-Qiang Li
- Zhejiang Raybow Pharmaceutical Co., Ltd. , No. 18 Nanyangsan Road , Linhai, Taizhou City , Zhejiang Province 318000 , People's Republic of China
| | - Jian-Hua Xie
- State Key Laboratory and Institute of Elemento-organic Chemistry, College of Chemistry , Nankai University , Tianjin 300071 , People's Republic of China
| | - Pu-Cha Yan
- Zhejiang Raybow Pharmaceutical Co., Ltd. , No. 18 Nanyangsan Road , Linhai, Taizhou City , Zhejiang Province 318000 , People's Republic of China
| | - Qi-Lin Zhou
- State Key Laboratory and Institute of Elemento-organic Chemistry, College of Chemistry , Nankai University , Tianjin 300071 , People's Republic of China
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19
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Iridium-Catalyzed Asymmetric Hydrogenation. TOP ORGANOMETAL CHEM 2020. [DOI: 10.1007/3418_2020_64] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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20
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Saini G, Mondal A, Kapur M. Palladium-Mediated Remote Functionalization in γ- and ε-Arylations and Alkenylations of Unblocked Cyclic Enones. Org Lett 2019; 21:9071-9075. [PMID: 31680525 DOI: 10.1021/acs.orglett.9b03462] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
We report herein an extensive investigation of simple and regioselective endo- as well as exo-γ-arylations of silyl-dienol ethers of unblocked cyclic enones with the utilization of palladium-catalyzed, modified Kuwajima-Urabe conditions. We have also successfully explored a new exo-ε-arylation of silyl-trienol ethers of π-extended cyclic enones. In addition, we also report, herein, exclusive γ- and ε-alkenylation of silyl-dienol and silyl-trienol ethers of cyclic enones.
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Affiliation(s)
- Gaurav Saini
- Department of Chemistry , Indian Institute of Science Education and Research Bhopal , Bhopal Bypass Road , Bhauri, Bhopal 462066 , MP , India
| | - Arpan Mondal
- Department of Chemistry , Indian Institute of Science Education and Research Bhopal , Bhopal Bypass Road , Bhauri, Bhopal 462066 , MP , India
| | - Manmohan Kapur
- Department of Chemistry , Indian Institute of Science Education and Research Bhopal , Bhopal Bypass Road , Bhauri, Bhopal 462066 , MP , India
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21
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Zhao Z, Bagdi PR, Yang S, Liu J, Xu W, Fang X. Stereodivergent Access to Enantioenriched Epoxy Alcohols with Three Stereogenic Centers via Ruthenium-Catalyzed Transfer Hydrogenation. Org Lett 2019; 21:5491-5494. [PMID: 31264880 DOI: 10.1021/acs.orglett.9b01789] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The resolution technique of stereodivergent reaction on racemic mixtures (stereodivergent RRM) was employed for the first time in ruthenium complex catalyzed transfer hydrogenation of racemic epoxy ketones, providing a new and very simple method that allows access to enantioenriched epoxy alcohols with three stereogenic centers in a one-step fashion. The protocol features simple reaction conditions, practical operation, ability to scale up, and broad group tolerance.
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Affiliation(s)
- Zhifei Zhao
- State Key Laboratory of Structural Chemistry , Fujian Institute of Research on the Structure of Matter, Center for Excellence in Molecular Synthesis, University of Chinese Academy of Sciences , Fuzhou 350100 , China
| | - Prasanta Ray Bagdi
- State Key Laboratory of Structural Chemistry , Fujian Institute of Research on the Structure of Matter, Center for Excellence in Molecular Synthesis, University of Chinese Academy of Sciences , Fuzhou 350100 , China
| | - Shuang Yang
- State Key Laboratory of Structural Chemistry , Fujian Institute of Research on the Structure of Matter, Center for Excellence in Molecular Synthesis, University of Chinese Academy of Sciences , Fuzhou 350100 , China.,Key Laboratory of Synthetic Chemistry of Natural Substances , Shanghai Institute of Organic Chemistry , Shanghai 200032 China
| | - Jinggong Liu
- Orthopedics Department , Guangdong Provincial Hospital of Traditional Chinese Medicine , No. 111 Dade Road , Guangzhou 510120 , China
| | - Weici Xu
- State Key Laboratory of Structural Chemistry , Fujian Institute of Research on the Structure of Matter, Center for Excellence in Molecular Synthesis, University of Chinese Academy of Sciences , Fuzhou 350100 , China
| | - Xinqiang Fang
- State Key Laboratory of Structural Chemistry , Fujian Institute of Research on the Structure of Matter, Center for Excellence in Molecular Synthesis, University of Chinese Academy of Sciences , Fuzhou 350100 , China.,Key Laboratory of Synthetic Chemistry of Natural Substances , Shanghai Institute of Organic Chemistry , Shanghai 200032 China
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22
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Lan P, Banwell MG, Willis AC. Application of Electrocyclic Ring-Opening and Desymmetrizing Nucleophilic Trappings of meso-6,6-Dibromobicyclo[3.1.0]hexanes to Total Syntheses of Crinine and Haemanthamine Alkaloids. J Org Chem 2019; 84:3431-3466. [PMID: 30726669 DOI: 10.1021/acs.joc.9b00018] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The thermally induced electrocyclic ring-opening of C2-symmetric ( meso) 6,6-dibromobicyclo[3.1.0]hexanes such as 10 in the presence of the chiral, nonracemic 1°-amine 28 afforded a ca. 1:1 mixture of the diastereoisomeric and chromatographically separable 1-amino-2-bromo-2-cyclohexenes 37 (42%) and 38 (45%). Each of these was elaborated over 13 steps, including Suzuki-Miyaura cross-coupling, radical cyclization, and Pictet-Spengler reactions, into (-)- or (+)-crinane (1 or ent-1, respectively). Variations on these protocols were applied to the total syntheses of (+)- and (-)-11-hydroxyvattitine [(+)- and (-)-3], (+)- and (-)-bulbispermine [(+)- and (-)-4], (+)- and (-)-haemanthamine [(+)- and (-)-5], (+)- and (-)-pretazettine [(+)- and (-)-6], and (+)- and (-)-tazettine [(+)- and (-)-7] as well as (±)-hamayne [(±)-8] and (±)-apohaemanthamine [(±)-9]. A number of these alkaloids were synthesized for the first time.
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Affiliation(s)
- Ping Lan
- Institute for Advanced and Applied Chemical Synthesis , Jinan University , Zhuhai 519070 , China.,Department of Food Science and Engineering , Jinan University , Guangzhou 510632 , China
| | - Martin G Banwell
- Institute for Advanced and Applied Chemical Synthesis , Jinan University , Zhuhai 519070 , China.,Research School of Chemistry, Institute of Advanced Studies , The Australian National University , Canberra , ACT 2601 , Australia
| | - Anthony C Willis
- Research School of Chemistry, Institute of Advanced Studies , The Australian National University , Canberra , ACT 2601 , Australia
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23
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Bin H, Wang K, Yang D, Yang X, Xie J, Zhou Q. Scalable Enantioselective Total Synthesis of (−)‐Goniomitine. Angew Chem Int Ed Engl 2019; 58:1174-1177. [DOI: 10.1002/anie.201812822] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Huai‐Yu Bin
- State Key Laboratory and Institute of Elemento-organic ChemistryCollege of Chemistry, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Nankai University Tianjin 300071 China
| | - Ke Wang
- State Key Laboratory and Institute of Elemento-organic ChemistryCollege of Chemistry, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Nankai University Tianjin 300071 China
| | - Dan Yang
- State Key Laboratory and Institute of Elemento-organic ChemistryCollege of Chemistry, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Nankai University Tianjin 300071 China
| | - Xiao‐Hui Yang
- State Key Laboratory and Institute of Elemento-organic ChemistryCollege of Chemistry, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Nankai University Tianjin 300071 China
| | - Jian‐Hua Xie
- State Key Laboratory and Institute of Elemento-organic ChemistryCollege of Chemistry, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Nankai University Tianjin 300071 China
| | - Qi‐Lin Zhou
- State Key Laboratory and Institute of Elemento-organic ChemistryCollege of Chemistry, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Nankai University Tianjin 300071 China
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24
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Abstract
Recent progress on the isolation, identification, biological activity and synthetic studies of Amaryllidaceae alkaloids, as well as the structurally close alkaloids from theSceletiumgenus, published from July 2015 to June 2017 are reviewed.
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Affiliation(s)
- Zhong Jin
- State Key Laboratory and Institute of Elemento-Organic Chemistry
- College of Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Guangmin Yao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation
- School of Pharmacy
- Tongji Medical College
- Huazhong University of Science and Technology
- Wuhan 430030
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25
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Bin H, Wang K, Yang D, Yang X, Xie J, Zhou Q. Scalable Enantioselective Total Synthesis of (−)‐Goniomitine. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201812822] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Huai‐Yu Bin
- State Key Laboratory and Institute of Elemento-organic ChemistryCollege of Chemistry, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Nankai University Tianjin 300071 China
| | - Ke Wang
- State Key Laboratory and Institute of Elemento-organic ChemistryCollege of Chemistry, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Nankai University Tianjin 300071 China
| | - Dan Yang
- State Key Laboratory and Institute of Elemento-organic ChemistryCollege of Chemistry, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Nankai University Tianjin 300071 China
| | - Xiao‐Hui Yang
- State Key Laboratory and Institute of Elemento-organic ChemistryCollege of Chemistry, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Nankai University Tianjin 300071 China
| | - Jian‐Hua Xie
- State Key Laboratory and Institute of Elemento-organic ChemistryCollege of Chemistry, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Nankai University Tianjin 300071 China
| | - Qi‐Lin Zhou
- State Key Laboratory and Institute of Elemento-organic ChemistryCollege of Chemistry, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Nankai University Tianjin 300071 China
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26
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Verma P, Chandra A, Pandey G. Diversity-Oriented Approach Toward the Syntheses of Amaryllidaceae Alkaloids via a Common Chiral Synthon. J Org Chem 2018; 83:9968-9977. [PMID: 30005155 DOI: 10.1021/acs.joc.8b01368] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Functionalized hydroindole (1), a common chiral synthon, for versatile transformations to synthesize a broad range of Amaryllidaceae alkaloids (AAs) including (-)-crinine, (-)-crinane, (-)-amabiline, (+)-mesembrine, (-)-maritidine, (-)-oxomaritidine, and (+)-mesembrane is reported. Scaffold 1 is found as a prime structural motif in a wide variety of the AAs and is a novel synthon toward designing a divergent route for the synthesis of these natural products. This is established in a few steps, starting from a chiral aza-bicyclo-heptene sulfone scaffold (2) via conjugate addition and concomitant stereoselective ring opening with allylmagnesium bromide, a key step that generates a crucial quaternary stereocenter, fixing the stereochemistry of the rest of the molecule at an early stage. One carbon truncation followed by intramolecular reductive amination led to the desired core 1 in a multigram scale.
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Affiliation(s)
- Prachi Verma
- Molecular Synthesis and Drug Discovery Lab , Centre of Biomedical Research, SGPGI Campus , Raibarely Road , Lucknow , Uttar Pradesh 226014 , India
| | - Atish Chandra
- Molecular Synthesis and Drug Discovery Lab , Centre of Biomedical Research, SGPGI Campus , Raibarely Road , Lucknow , Uttar Pradesh 226014 , India
| | - Ganesh Pandey
- Molecular Synthesis and Drug Discovery Lab , Centre of Biomedical Research, SGPGI Campus , Raibarely Road , Lucknow , Uttar Pradesh 226014 , India
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27
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Das MK, Kumar N, Bisai A. Catalytic Asymmetric Total Syntheses of Naturally Occurring Amarylidaceae Alkaloids, (−)-Crinine, (−)-epi-Crinine, (−)-Oxocrinine, (+)-epi-Elwesine, (+)-Vittatine, and (+)-epi-Vittatine*. Org Lett 2018; 20:4421-4424. [DOI: 10.1021/acs.orglett.8b01703] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mrinal K. Das
- Department of Chemistry, IISER Bhopal, Bhopal Bypass Road, Bhauri, Bhopal - 462 066, Madhya Pradesh, India
| | - Nivesh Kumar
- Department of Chemistry, IISER Bhopal, Bhopal Bypass Road, Bhauri, Bhopal - 462 066, Madhya Pradesh, India
| | - Alakesh Bisai
- Department of Chemistry, IISER Bhopal, Bhopal Bypass Road, Bhauri, Bhopal - 462 066, Madhya Pradesh, India
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28
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Jian‐Hua Xie. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/anie.201712466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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29
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van Otterlo WAL, Green IR. A Review on Recent Syntheses of Amaryllidaceae Alkaloids and Isocarbostyrils (Time period mid-2016 to 2017). Nat Prod Commun 2018. [DOI: 10.1177/1934578x1801300305] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Alkaloids from the Amaryllidaceae have become valuable targets for synthetic organic chemists, mainly due to their wide variety of bioactivities and potential for utilization in medicinal chemistry ventures. In addition, the structural complexity of a number of these alkaloids has also been a reason for the interest in these compounds. In this review, the last 18 months of literature was perused and synthetic highlights have been presented here, with the hope to further focus attention on this interesting class of compounds and to encourage others to synthesize these compounds and their derivatives and/or analogues. The review contains examples of syntheses from most of the important alkaloid scaffold classes previously isolated from the Amaryllidaceae, namely: lycorine, crinine, galanthamine, tazettine, montanine, phenanthridone, phenanthridine, plicamine, mesembrine and some minor scaffolds (like gracilamine).
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Affiliation(s)
- Willem A. L. van Otterlo
- Department of Chemistry and Polymer Science, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
| | - Ivan R. Green
- Department of Chemistry and Polymer Science, Stellenbosch University, Private Bag X1, Matieland 7602, South Africa
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30
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Bao X, Wang Q, Zhu J. Palladium-Catalyzed Enantioselective Desymmetrizing Aza-Wacker Reaction: Development and Application to the Total Synthesis of (−)-Mesembrane and (+)-Crinane. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201712521] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Xu Bao
- Laboratory of Synthesis and Natural Products; Institute of Chemical Sciences and Engineering; Ecole Polytechnique Fédérale de Lausanne; EPFL-SB-ISIC-LSPN, BCH 5304 1015 Lausanne Switzerland
| | - Qian Wang
- Laboratory of Synthesis and Natural Products; Institute of Chemical Sciences and Engineering; Ecole Polytechnique Fédérale de Lausanne; EPFL-SB-ISIC-LSPN, BCH 5304 1015 Lausanne Switzerland
| | - Jieping Zhu
- Laboratory of Synthesis and Natural Products; Institute of Chemical Sciences and Engineering; Ecole Polytechnique Fédérale de Lausanne; EPFL-SB-ISIC-LSPN, BCH 5304 1015 Lausanne Switzerland
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31
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Bao X, Wang Q, Zhu J. Palladium-Catalyzed Enantioselective Desymmetrizing Aza-Wacker Reaction: Development and Application to the Total Synthesis of (-)-Mesembrane and (+)-Crinane. Angew Chem Int Ed Engl 2018; 57:1995-1999. [PMID: 29314546 DOI: 10.1002/anie.201712521] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Indexed: 12/23/2022]
Abstract
Reported is an unprecedented catalytic enantioselective desymmetrizing aza-Wacker reaction. In the presence of a catalytic amount of a newly developed Pd(CPA)2 (MeCN)2 catalyst (CPA=chiral phosphoric acid), a pyrox ligand, and molecular oxygen, cyclization of properly functionalized prochiral 3,3-disubstituted cyclohexa-1,4-dienes afforded enantioenriched cis-3a-substituted tetrahydroindoles in good yields with excellent enantioselectivities. A cooperative effect between the phosphoric acid and the pyrox ligand ensured efficient transformation. This reaction was tailor-made for Amaryllidaceae and Sceletium alkaloids as illustrated by its application in the development of the concise and divergent total synthesis of (-)-mesembrane and (+)-crinane.
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Affiliation(s)
- Xu Bao
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH 5304, 1015, Lausanne, Switzerland
| | - Qian Wang
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH 5304, 1015, Lausanne, Switzerland
| | - Jieping Zhu
- Laboratory of Synthesis and Natural Products, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL-SB-ISIC-LSPN, BCH 5304, 1015, Lausanne, Switzerland
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32
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Chen P, Wu Y, Zhu S, Jiang H, Ma Z. Ir-Catalyzed reactions in natural product synthesis. Org Chem Front 2018. [DOI: 10.1039/c7qo00665a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
This review highlights the recent applications of Ir-catalyzed reactions in the total synthesis of natural products.
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Affiliation(s)
- Pengquan Chen
- Key Lab of Functional Molecular Engineering of Guangdong Province
- School of Chemistry & Chemical Engineering
- South China University of Technology
- Guangzhou 510641
- People's Republic of China
| | - Yuecheng Wu
- Key Lab of Functional Molecular Engineering of Guangdong Province
- School of Chemistry & Chemical Engineering
- South China University of Technology
- Guangzhou 510641
- People's Republic of China
| | - Shifa Zhu
- Key Lab of Functional Molecular Engineering of Guangdong Province
- School of Chemistry & Chemical Engineering
- South China University of Technology
- Guangzhou 510641
- People's Republic of China
| | - Huanfeng Jiang
- Key Lab of Functional Molecular Engineering of Guangdong Province
- School of Chemistry & Chemical Engineering
- South China University of Technology
- Guangzhou 510641
- People's Republic of China
| | - Zhiqiang Ma
- Key Lab of Functional Molecular Engineering of Guangdong Province
- School of Chemistry & Chemical Engineering
- South China University of Technology
- Guangzhou 510641
- People's Republic of China
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33
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Jian‐Hua Xie. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201712466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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34
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Zuo XD, Guo SM, Yang R, Xie JH, Zhou QL. Asymmetric Total Synthesis of Gracilamine and Determination of Its Absolute Configuration. Org Lett 2017; 19:5240-5243. [PMID: 28956613 DOI: 10.1021/acs.orglett.7b02517] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
(+)-Gracilamine, a biologically attractive and structurally unique pentacyclic Amaryllidaceae alkaloid, was biomimetically synthesized in 11 linear steps in 9.9% overall yield from the known racemic oxocrinine. The synthesis features an asymmetric hydrogenation, a ring-opening/benzylic oxidation/cyclization sequence, and a biomimetic intramolecular cycloaddition. This total synthesis not only allows the assignment of its absolute configuration, but also provides experimental support for the hypothesis that naturally occurring (+)-gracilamine is biogenetically derived from the crinine-type alkaloid (+)-epivittatine.
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Affiliation(s)
- Xiao-Dong Zuo
- State Key Laboratory and Institute of Elemento-organic Chemistry, College of Chemistry, Nankai University , Tianjin 300071, China
| | - Shu-Min Guo
- State Key Laboratory and Institute of Elemento-organic Chemistry, College of Chemistry, Nankai University , Tianjin 300071, China
| | - Rui Yang
- State Key Laboratory and Institute of Elemento-organic Chemistry, College of Chemistry, Nankai University , Tianjin 300071, China
| | - Jian-Hua Xie
- State Key Laboratory and Institute of Elemento-organic Chemistry, College of Chemistry, Nankai University , Tianjin 300071, China
| | - Qi-Lin Zhou
- State Key Laboratory and Institute of Elemento-organic Chemistry, College of Chemistry, Nankai University , Tianjin 300071, China.,Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University , Tianjin 300071, China
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35
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Liu Y, Li L, Xie J, Zhou Q. Divergent Asymmetric Total Synthesis of Mulinane Diterpenoids. Angew Chem Int Ed Engl 2017; 56:12708-12711. [DOI: 10.1002/anie.201706994] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Yun‐Ting Liu
- State Key Laboratory and Institute of Elemento-organic Chemistry College of Chemistry, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Nankai University Tianjin 300071 China
| | - Lin‐Ping Li
- State Key Laboratory and Institute of Elemento-organic Chemistry College of Chemistry, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Nankai University Tianjin 300071 China
| | - Jian‐Hua Xie
- State Key Laboratory and Institute of Elemento-organic Chemistry College of Chemistry, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Nankai University Tianjin 300071 China
| | - Qi‐Lin Zhou
- State Key Laboratory and Institute of Elemento-organic Chemistry College of Chemistry, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Nankai University Tianjin 300071 China
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36
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Liu Y, Li L, Xie J, Zhou Q. Divergent Asymmetric Total Synthesis of Mulinane Diterpenoids. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201706994] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Yun‐Ting Liu
- State Key Laboratory and Institute of Elemento-organic Chemistry College of Chemistry, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Nankai University Tianjin 300071 China
| | - Lin‐Ping Li
- State Key Laboratory and Institute of Elemento-organic Chemistry College of Chemistry, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Nankai University Tianjin 300071 China
| | - Jian‐Hua Xie
- State Key Laboratory and Institute of Elemento-organic Chemistry College of Chemistry, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Nankai University Tianjin 300071 China
| | - Qi‐Lin Zhou
- State Key Laboratory and Institute of Elemento-organic Chemistry College of Chemistry, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Nankai University Tianjin 300071 China
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