1
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Liang JJ, Lv TM, Xu ZY, Huang XX, Song SJ. Aquilaria sinensis (Lour.) Spreng: Phytochemical review and Chemotaxonomic values. BIOCHEM SYST ECOL 2022. [DOI: 10.1016/j.bse.2022.104413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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2
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Yang L, Huang S, Huang R, Hou A, Zhang S, Su H, Ding X, Lin B, Cheng M, Liu Y. Total Syntheses of Aspidospermidine, N-Methylaspidospermidine, N-Acetylaspidospermidine, and Aspidospermine via a Tandem Cyclization of Tryptamine-Ynamide. Org Lett 2021; 23:6471-6476. [PMID: 34339196 DOI: 10.1021/acs.orglett.1c02287] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The total syntheses of aspidospermidine, N-methylaspidospermidine, N-acetylaspidospermidine, and aspidospermine were achieved from a common pentacyclic indoline intermediate. The common pentacyclic indoline intermediate was synthesized on a gram scale through a Stork-enamine alkylation of 1H-pyrrolo[2,3-d]carbazole derivatives, which were prepared through a Brønsted acid-catalyzed tandem cyclization of tryptamine-ynamide. The scalable synthesis of 1H-pyrrolo[2,3-d]carbazole afforded facile access and a practical approach to the Aspidosperma indole alkaloid family.
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Affiliation(s)
- Lu Yang
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China.,Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China.,Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Siwen Huang
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China.,Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Rongkang Huang
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China.,Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China.,Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Anbin Hou
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China.,Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China.,Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Sen Zhang
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China.,Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China.,Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Hongwei Su
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China.,Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Xiaohong Ding
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China.,Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Bin Lin
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China.,Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Maosheng Cheng
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China.,Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
| | - Yongxiang Liu
- Key Laboratory of Structure-Based Drug Design and Discovery of Ministry of Education, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China.,Wuya College of Innovation, Shenyang Pharmaceutical University, Shenyang 110016, P. R. China.,Institute of Drug Research in Medicine Capital of China, Benxi 117000, P. R. China
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3
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Wu SP, Wang DK, Kang QQ, Ge GP, Zheng H, Zhu M, Li T, Zhang JQ, Wei WT. Sulfonyl radical triggered selective iodosulfonylation and bicyclization of 1,6-dienes. Chem Commun (Camb) 2021; 57:8288-8291. [PMID: 34318821 DOI: 10.1039/d1cc03252f] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
A novel sulfonyl radical triggered selective iodosulfonylation and bicyclization of 1,6-dienes has been described for the first time. High selectivity and efficiency, mild reaction conditions, excellent functional group compatibility, and broad substrate scope are the attractive features of this synthetic protocol, which provides a unique platform for precise radical cyclization.
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Affiliation(s)
- Shi-Ping Wu
- Key Laboratory of Advanced Mass Spectrometry and Molecular Analysis of Zhejiang Province, State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, School of Materials Science and Chemical Engineering, Ningbo University, Ningbo, Zhejiang 315211, China.
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4
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Madroñero D, Mujica-Martinez CA, Vázquez A. Consecutive reactions to construct tricarbonyl compounds and synthetic applications thereof. RSC Adv 2021; 11:33235-33244. [PMID: 35497560 PMCID: PMC9042245 DOI: 10.1039/d1ra05187c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 09/28/2021] [Indexed: 11/21/2022] Open
Abstract
A cascade process to construct synthetically valuable β-keto-β′-acylcycloalkanecarboxylic acid esters and their transformation into bicyclic and tricyclic systems through intramolecular condensation reactions.
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Affiliation(s)
- Diego Madroñero
- Departamento de Química Orgánica, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, Cd. Mx., 04510, Mexico
| | - Cesar A. Mujica-Martinez
- GIFBA, Departamento de Química, Facultad de Ciencias Exactas y Naturales, Centro de Investigación en Materiales CIMA, Universidad de Nariño, San Juan de Pasto, 520002, Colombia
| | - Alfredo Vázquez
- Departamento de Química Orgánica, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, Cd. Mx., 04510, Mexico
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5
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6
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Pitsinos EN, Mavridis I, Tzouma E, Vidali VP. Enantioselective Synthesis of Cassane-Type Furanoditerpenoids: Total Synthesis of Sucutiniranes C and D. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000724] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Emmanuel N. Pitsinos
- Institute of Nanoscience and Nanotechnology; National Centre of Scientific Research “Demokritos”; P.O. Box 60037 15310 Agia Paraskevi Attikis Greece
| | - Ioannis Mavridis
- Institute of Nanoscience and Nanotechnology; National Centre of Scientific Research “Demokritos”; P.O. Box 60037 15310 Agia Paraskevi Attikis Greece
| | - Eirini Tzouma
- Institute of Nanoscience and Nanotechnology; National Centre of Scientific Research “Demokritos”; P.O. Box 60037 15310 Agia Paraskevi Attikis Greece
| | - Veroniki P. Vidali
- Institute of Nanoscience and Nanotechnology; National Centre of Scientific Research “Demokritos”; P.O. Box 60037 15310 Agia Paraskevi Attikis Greece
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7
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Zhao S, Chen K, Zhang L, Yang W, Huang D. Sulfonyl Hydrazides in Organic Synthesis: A Review of Recent Studies. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000466] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Shuangte Zhao
- Department of ChemistryLishui University Lishui City 323000, Zhejiang Province, P. R. People's Republic of China
| | - Kaijun Chen
- Department of ChemistryLishui University Lishui City 323000, Zhejiang Province, P. R. People's Republic of China
| | - Ling Zhang
- Department of ChemistryLishui University Lishui City 323000, Zhejiang Province, P. R. People's Republic of China
| | - Weiguang Yang
- The Marine Biomedical Research InstituteGuangdong Medical University Zhanjiang 524023, Guangdong Province
| | - Dayun Huang
- Department of ChemistryLishui University Lishui City 323000, Zhejiang Province, P. R. People's Republic of China
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8
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Xu HB, Yang TH, Xie P, Tang ZS, Xu HL, Deng C, Liang YN, Zhou R, Liu SJ, Zhang Y. Cyperane-Type and Related (Nor)Sesquiterpenoids from the Root Bark of Acanthopanax gracilistylus and Their Inhibitory Effects on Nitric Oxide Production. JOURNAL OF NATURAL PRODUCTS 2020; 83:1453-1460. [PMID: 32319765 DOI: 10.1021/acs.jnatprod.9b00913] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
An enantiomeric pair of rare cyperane-type sesquiterpenoids, (+)- and (-)-gracilistones C (1a, 1b), together with a novel norsesquiterpenoid, gracilistone D (2), bearing a bicyclic lactone system were isolated from the root bark of Acanthopanax gracilistylus using LC-MS-IT-TOF analyses. The structures and absolute configurations of 1a, 1b, and 2 were elucidated by 1D and 2D NMR spectroscopy, X-ray diffraction, and ECD spectroscopic methods. Intermediate 1b suggests a possible biosynthesis process involving compound 2. The bioassay results showed that compounds 1a, 1b, and 2 exhibited significant inhibitory effects against lipopolysaccharide-induced nitric oxide production in RAW 264.7 cells, with IC50 values of 7.7 ± 0.6, 6.8 ± 1.5, and 2.6 ± 0.4 μM, respectively. Additional docking analyses provided some perspective of this activity in human inducible nitric oxide synthase.
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Affiliation(s)
- Hong-Bo Xu
- Shaanxi Collaborative Innovation Center of Chinese Medicine Resources Industrialization, State Key Laboratory of Research & Development of Characteristic Qin Medicine Resources (Cultivation), Shaanxi Innovative Drug Research Center and College of Pharmacy, Shaanxi University of Chinese Medicine, Xianyang 712046, People's Republic of China
| | - Tong-Hua Yang
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, People's Republic of China
| | - Pei Xie
- Shaanxi Collaborative Innovation Center of Chinese Medicine Resources Industrialization, State Key Laboratory of Research & Development of Characteristic Qin Medicine Resources (Cultivation), Shaanxi Innovative Drug Research Center and College of Pharmacy, Shaanxi University of Chinese Medicine, Xianyang 712046, People's Republic of China
| | - Zhi-Shu Tang
- Shaanxi Collaborative Innovation Center of Chinese Medicine Resources Industrialization, State Key Laboratory of Research & Development of Characteristic Qin Medicine Resources (Cultivation), Shaanxi Innovative Drug Research Center and College of Pharmacy, Shaanxi University of Chinese Medicine, Xianyang 712046, People's Republic of China
| | - Huai-Li Xu
- Shaanxi Collaborative Innovation Center of Chinese Medicine Resources Industrialization, State Key Laboratory of Research & Development of Characteristic Qin Medicine Resources (Cultivation), Shaanxi Innovative Drug Research Center and College of Pharmacy, Shaanxi University of Chinese Medicine, Xianyang 712046, People's Republic of China
| | - Chong Deng
- Shaanxi Collaborative Innovation Center of Chinese Medicine Resources Industrialization, State Key Laboratory of Research & Development of Characteristic Qin Medicine Resources (Cultivation), Shaanxi Innovative Drug Research Center and College of Pharmacy, Shaanxi University of Chinese Medicine, Xianyang 712046, People's Republic of China
| | - Yan-Ni Liang
- Shaanxi Collaborative Innovation Center of Chinese Medicine Resources Industrialization, State Key Laboratory of Research & Development of Characteristic Qin Medicine Resources (Cultivation), Shaanxi Innovative Drug Research Center and College of Pharmacy, Shaanxi University of Chinese Medicine, Xianyang 712046, People's Republic of China
| | - Rui Zhou
- Shaanxi Collaborative Innovation Center of Chinese Medicine Resources Industrialization, State Key Laboratory of Research & Development of Characteristic Qin Medicine Resources (Cultivation), Shaanxi Innovative Drug Research Center and College of Pharmacy, Shaanxi University of Chinese Medicine, Xianyang 712046, People's Republic of China
| | - Shi-Jun Liu
- Shaanxi Collaborative Innovation Center of Chinese Medicine Resources Industrialization, State Key Laboratory of Research & Development of Characteristic Qin Medicine Resources (Cultivation), Shaanxi Innovative Drug Research Center and College of Pharmacy, Shaanxi University of Chinese Medicine, Xianyang 712046, People's Republic of China
| | - Yu Zhang
- Shaanxi Collaborative Innovation Center of Chinese Medicine Resources Industrialization, State Key Laboratory of Research & Development of Characteristic Qin Medicine Resources (Cultivation), Shaanxi Innovative Drug Research Center and College of Pharmacy, Shaanxi University of Chinese Medicine, Xianyang 712046, People's Republic of China
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9
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Tan D, Zhou J, Liu C, Han F. Enantioselective Total Synthesis and Absolute Configuration Assignment of (+)‐Tronocarpine Enabled by an Asymmetric Michael/Aldol Reaction. Angew Chem Int Ed Engl 2020; 59:3834-3839. [DOI: 10.1002/anie.201914868] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Indexed: 01/24/2023]
Affiliation(s)
- Dong‐Xing Tan
- CAS Key Lab of High-Performance Synthetic Rubber and Its Composite Materials Changchun Institute of Applied Chemistry Chinese Academy of Sciences 5625 Renmin Street Changchun Jilin 130022 China
- University of Science and Technology of China Hefei Anhui 230026 China
| | - Jie Zhou
- CAS Key Lab of High-Performance Synthetic Rubber and Its Composite Materials Changchun Institute of Applied Chemistry Chinese Academy of Sciences 5625 Renmin Street Changchun Jilin 130022 China
- The University of Chinese Academy of Sciences Beijing 100864 China
| | - Chao‐You Liu
- CAS Key Lab of High-Performance Synthetic Rubber and Its Composite Materials Changchun Institute of Applied Chemistry Chinese Academy of Sciences 5625 Renmin Street Changchun Jilin 130022 China
| | - Fu‐She Han
- CAS Key Lab of High-Performance Synthetic Rubber and Its Composite Materials Changchun Institute of Applied Chemistry Chinese Academy of Sciences 5625 Renmin Street Changchun Jilin 130022 China
- University of Science and Technology of China Hefei Anhui 230026 China
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10
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Enantioselective Total Synthesis and Absolute Configuration Assignment of (+)‐Tronocarpine Enabled by an Asymmetric Michael/Aldol Reaction. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201914868] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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11
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Yan TH, Ananthan B, Chang SH. A New Entry of Highly Selective and Nucleophilic BrH
2
C‐ and ClH
2
C‐Titanium Complexes for Carbonyl Coupling. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801438] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Tu Hsin Yan
- Department of Chemistry National Chung‐Hsing University 400, Taiwan Taichung Republic of China
| | - Bakthavachalam Ananthan
- Department of Chemistry National Chung‐Hsing University 400, Taiwan Taichung Republic of China
| | - Su Haur Chang
- Department of Chemistry National Chung‐Hsing University 400, Taiwan Taichung Republic of China
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12
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Wu GJ, Zhang YH, Tan DX, Han FS. Total synthesis of cyrneines A-B and glaucopine C. Nat Commun 2018; 9:2148. [PMID: 29858575 PMCID: PMC5984623 DOI: 10.1038/s41467-018-04480-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2018] [Accepted: 04/24/2018] [Indexed: 11/28/2022] Open
Abstract
The cyrneine diterpenoids represent a structurally intriguing subfamily of cyathane diterpenoids and could significantly induce neurite outgrowth. Therefore, the efficient synthesis of these natural products is of great importance. Herein, we present a route for the collective synthesis of cyrneines A, B, and glaucopine C. As the key precursor, the 5-6-6-tricyclic scaffold is efficiently constructed by employing a mild Suzuki coupling of heavily substituted nonactivated cyclopentenyl triflate and a chelation-controlled regiospecific Friedel-Crafts cyclization as key transformations. The stereoselective installation of the all-carbon quaternary center at C6 ring junction of the tricycle is achieved via Birch reductive methylation. Subsequently, a carbenoid-mediated ring expansion furnishes the essential 5-6-7-tricyclic core. Finally, manipulation of this core by several appropriately orchestrated conversions accomplishes a more step-economic synthesis of cyrneine A (20 steps), and the first synthesis of cyrneine B (24 steps) and glaucopine C (23 steps).
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Affiliation(s)
- Guo-Jie Wu
- Key Lab of Synthetic Rubber, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin, 130022, China
| | - Yuan-He Zhang
- Key Lab of Synthetic Rubber, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin, 130022, China
- University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Dong-Xing Tan
- Key Lab of Synthetic Rubber, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin, 130022, China
- University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Fu-She Han
- Key Lab of Synthetic Rubber, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, Jilin, 130022, China.
- State Key Lab of Fine Chemicals, Dalian University of Technology, Dalian, 116024, China.
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13
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Holzschneider K, Kirsch SF. [1, 2]-Migration Reactions Catalyzed by Gold Complexes and their Applications in Total Synthesis. Isr J Chem 2018. [DOI: 10.1002/ijch.201700081] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
| | - Stefan F. Kirsch
- Organic Chemistry; Bergische Universität Wuppertal; Gaußstr. 20 42119 Wuppertal Germany
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14
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Yang J, Xu W, Cui Q, Fan X, Wang LN, Yu ZX. Asymmetric Total Synthesis of (−)-Clovan-2,9-dione Using Rh(I)-Catalyzed [3 + 2 + 1] Cycloaddition of 1-Yne-vinylcyclopropane and CO. Org Lett 2017; 19:6040-6043. [DOI: 10.1021/acs.orglett.7b02656] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jun Yang
- Beijing National Laboratory
for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry
and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Wenbo Xu
- Beijing National Laboratory
for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry
and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Qi Cui
- Beijing National Laboratory
for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry
and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Xing Fan
- Beijing National Laboratory
for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry
and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Lu-Ning Wang
- Beijing National Laboratory
for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry
and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Zhi-Xiang Yu
- Beijing National Laboratory
for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry
and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
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15
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Yu S, Cho E, Kim J, Lee S. Palladium-Catalyzed Decarboxylative Coupling of Alkynyl Carboxylic Acids and Alkenyl Tosylates for the Synthesis of Enynones. J Org Chem 2017; 82:11150-11156. [DOI: 10.1021/acs.joc.7b02175] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Subeen Yu
- Department of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Eunjeong Cho
- Department of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Jimin Kim
- Department of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Sunwoo Lee
- Department of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea
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16
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Demertzidou VP, Zografos AL. Platinum-catalyzed cycloisomerizations of a common enyne: a divergent entry to cyclopropane sesquiterpenoids. Formal synthesis of sarcandralactone A. Org Biomol Chem 2016; 14:6942-6. [PMID: 27353206 DOI: 10.1039/c6ob01226d] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
A common enyne scaffold, resembling the structures of natural elemanes was found to be an excellent substrate for highly regioselective cycloisomerizations to produce diverse cyclopropane sesquiterpenoids. Platinum-catalysis was utilized to produce either lindenane or myliol cores, found in natural products, starting from enyne acetate 10 and its corresponding allene 12 respectively. Based on this concept, a second generation strategy allows the formal synthesis of sarcandralactone A.
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Affiliation(s)
- Vera P Demertzidou
- Department of Chemistry, Laboratory of Organic Chemistry, Aristotle University of Thessaloniki, University Campus, 54124, Thessaloniki, Greece.
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17
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Zhong X, Qi S, Li Y, Zhang J, Han FS. A study in indol-2-yl carbinol chemistry and the application for the total synthesis of mersicarpine. Tetrahedron 2015. [DOI: 10.1016/j.tet.2014.07.095] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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18
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Wegener M, Kirsch SF. The Reactivity of 4-Hydroxy- and 4-Silyloxy-1,5-allenynes with Homogeneous Gold(I) Catalysts. Org Lett 2015; 17:1465-8. [DOI: 10.1021/acs.orglett.5b00348] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Michael Wegener
- Organic
Chemistry, Bergische Universität Wuppertal, Gaußstr.
20, 42119 Wuppertal, Germany
| | - Stefan F. Kirsch
- Organic
Chemistry, Bergische Universität Wuppertal, Gaußstr.
20, 42119 Wuppertal, Germany
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19
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Nagarajan M, Kuruvilla GR, Kumar KS, Venkatasubramanian P. Abhava pratinidhi dravya: A comparative phytochemistry of Ativisha, Musta and related species. J Ayurveda Integr Med 2015; 6:53-63. [PMID: 25878466 PMCID: PMC4395931 DOI: 10.4103/0975-9476.146550] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Revised: 06/02/2014] [Accepted: 08/05/2014] [Indexed: 11/27/2022] Open
Abstract
Authentic Ativisha (Aconitum heterophyllum) is a rare, endangered Himalayan species. Ayurveda classical texts of c. 15(th)-16(th) century, introduced "abhava-pratinidhi dravya" concept, wherein Ativisha was categorized as an abhava dravya (unavailable drug) and Musta (Cyperus rotundus) was suggested as a pratinidhi dravya (substitute) for it. C. rotundus is a weed, abundantly available pan-India. Cryptocoryne spiralis (Naattu Athividayam) and Cyperus scariosus (Nagarmotha) are also traded as Ativisha and Musta, respectively. Yet, there are no scientific studies to validate the use of substitutes. A. heterophyllum bears no similarity in terms of botanical classification with the other candidates. This article reviews published literature with an emphasis to look for similar phytochemicals or groups of phytochemicals in the species that could contribute to similar pharmacological activities, thereby supporting the drug substitution from a bio-medical perspective. Alkaloids like atisine were found to be the main focus of studies on A. heterophyllum, whereas for the Cyperus spp., it was terpenoids like cyperene. Although alkaloids and terpenoids were reported from both species, alkaloids in C. rotundus and terpenoids in A. heterophyllum were minor constituents. Reports on phytochemicals on Cryptocoryne spiralis and C. scariosus were very limited. Despite no significant similarities in chemical profiles reported, the dravyaguna (Ayurvedic drug classification) of Ativisha and Musta was quite similar warranting further exploration into the bio-functional aspects of the drug materials.
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Affiliation(s)
- M. Nagarajan
- Centre for Pharmacognosy, Pharmaceutics and Pharmacology, Institute of Trans-Disciplinary Health Sciences and Technology, Foundation for Revitalisation of Local Health Traditions, Bengaluru, Karnataka, India
| | - Gina R. Kuruvilla
- Centre for Pharmacognosy, Pharmaceutics and Pharmacology, Institute of Trans-Disciplinary Health Sciences and Technology, Foundation for Revitalisation of Local Health Traditions, Bengaluru, Karnataka, India
| | | | - Padma Venkatasubramanian
- Centre for Pharmacognosy, Pharmaceutics and Pharmacology, Institute of Trans-Disciplinary Health Sciences and Technology, Foundation for Revitalisation of Local Health Traditions, Bengaluru, Karnataka, India
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20
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Alves LDC, Desiderá AL, de Oliveira KT, Newton S, Ley SV, Brocksom TJ. A practical deca-gram scale ring expansion of (R)-(−)-carvone to (R)-(+)-3-methyl-6-isopropenyl-cyclohept-3-enone-1. Org Biomol Chem 2015; 13:7633-42. [DOI: 10.1039/c5ob00525f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A route to enantiopure (R)-(+)-3-methyl-6-isopropenyl-cyclohept-3-enone-1, an intermediate for terpenoids, has been developed and includes a highly chemo- and regioselective Tiffeneau–Demjanov reaction.
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Affiliation(s)
- Leandro de C. Alves
- Departamento de Química
- Universidade Federal de São Carlos
- São Carlos – SP
- Brazil
| | - André L. Desiderá
- Departamento de Química
- Universidade Federal de São Carlos
- São Carlos – SP
- Brazil
| | | | - Sean Newton
- Department of Chemistry
- University of Cambridge
- Cambridge
- UK
| | - Steven V. Ley
- Department of Chemistry
- University of Cambridge
- Cambridge
- UK
| | - Timothy J. Brocksom
- Departamento de Química
- Universidade Federal de São Carlos
- São Carlos – SP
- Brazil
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Gold(I)-catalyzed heterocyclization of β-alkynyl hydroxamic acids: synthesis of isoxazolidin-3-ones. MONATSHEFTE FUR CHEMIE 2014. [DOI: 10.1007/s00706-014-1319-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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22
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Ni Z, Giordano L, Tenaglia A. Cyclobutene Formation in PtCl2-Catalyzed Cycloisomerizations of Heteroatom-Tethered 1,6-Enynes. Chemistry 2014; 20:11703-6. [DOI: 10.1002/chem.201403643] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2014] [Indexed: 11/10/2022]
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23
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Herndon JW. The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2012. Coord Chem Rev 2014. [DOI: 10.1016/j.ccr.2014.02.026] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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24
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Pace V, Castoldi L, Holzer W. Chemoselective Additions of Chloromethyllithium Carbenoid to Cyclic Enones: A Direct Access to Chloromethyl Allylic Alcohols. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201301042] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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25
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Hale KJ. Terpenoid- and shikimate-derived natural product total synthesis: a personal analysis and commentary on the importance of the papers that appear in this virtual issue. Org Lett 2014; 15:3181-98. [PMID: 23826672 DOI: 10.1021/ol401788y] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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26
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Abstract
This review covers the isolation, structural determination, synthesis and chemical and microbiological transformations of natural sesquiterpenoids. The literature from January to December 2012 is reviewed, and 471 references are cited.
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Affiliation(s)
- Braulio M Fraga
- Instituto de Productos Naturales y Agrobiología, CSIC, 38206-La Laguna, Tenerife, Canary Islands, Spain
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27
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Weimar M, Correa da Costa R, Lee FH, Fuchter MJ. A Scalable and Expedient Route to 1-Aza[6]helicene Derivatives and Its Subsequent Application to a Chiral-Relay Asymmetric Strategy. Org Lett 2013; 15:1706-9. [DOI: 10.1021/ol400493x] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Marko Weimar
- Department of Chemistry, Imperial College London, London SW7 2AZ, United Kingdom
| | | | - Fu-Howe Lee
- Department of Chemistry, Imperial College London, London SW7 2AZ, United Kingdom
| | - Matthew J. Fuchter
- Department of Chemistry, Imperial College London, London SW7 2AZ, United Kingdom
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28
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Huber F, Kirsch SF. NIS-Mediated Electrophilic Cyclization of 3-Silyloxy-1,n-enynes. J Org Chem 2013; 78:2780-5. [DOI: 10.1021/jo302751p] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Florian Huber
- Organic Chemistry, Bergische Universität Wuppertal, Gaußstr. 20, 42119 Wuppertal, Germany
| | - Stefan F. Kirsch
- Organic Chemistry, Bergische Universität Wuppertal, Gaußstr. 20, 42119 Wuppertal, Germany
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29
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Canham SM, France DJ, Overman LE. Total synthesis of (+)-sieboldine a: evolution of a pinacol-terminated cyclization strategy. J Org Chem 2013; 78:9-34. [PMID: 22734821 PMCID: PMC3825683 DOI: 10.1021/jo300872y] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
This article describes synthetic studies that culminated in the first total synthesis of the Lycopodium alkaloid sieboldine A. During this study, a number of pinacol-terminated cationic cyclizations were examined to form the cis-hydrindanone core of sieboldine A. Of these, a mild Au(I)-promoted 1,6-enyne cyclization that was terminated by a semipinacol rearrangement proved to be most efficient. Fashioning the unprecedented N-hydroxyazacyclononane ring embedded within the bicyclo[5.2.1]decane-N,O-acetal moiety of sieboldine A was a formidable challenge. Ultimately, the enantioselective total synthesis of (+)-sieboldine A was completed by forming this ring in good yield by cyclization of a protected-hydroxylamine thioglycoside precursor.
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Affiliation(s)
| | | | - Larry E. Overman
- Department of Chemistry, 1102 Natural Sciences II, University of California, Irvine, California 92697-2025
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31
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Zhong X, Li Y, Han FS. Al-Catalyzed Facile Construction of Quaternary CC Bonds by the Allylic Substitution of Tertiary Alcohols: A Concise and Formal Synthesis of (±)-Mersicarpine. Chemistry 2012; 18:9784-8. [DOI: 10.1002/chem.201201344] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2012] [Indexed: 11/06/2022]
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