1
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Wang M, Yin L, Cheng L, Yang Y, Li Y. Straightforward Stereoselective Synthesis of Seven-Membered Oxa-Bridged Rings through In Situ Generated Cycloheptenol Derivatives. J Org Chem 2021; 86:12956-12963. [PMID: 34436895 DOI: 10.1021/acs.joc.1c01648] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
An iodine-mediated stereoselective synthesis of seven-membered oxa-bridged rings via in situ generated cycloheptenols was reported. This process was realized through the combination of C-C σ-bond cleavage and C-O bond-forming reactions in a one-pot fashion from simple and easily accessible raw materials. The formation of carbon radicals initiated by I2 was the key to the reaction.
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Affiliation(s)
- Mengdan Wang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Liqiang Yin
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Lu Cheng
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Yajie Yang
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China
| | - Yanzhong Li
- School of Chemistry and Molecular Engineering, East China Normal University, 500 Dongchuan Road, Shanghai 200241, China.,Key Laboratory of Polar Materials and Devices, Ministry of Education, 500 Dongchuan Road, Shanghai 200241, China
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2
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Indu S, Kaliappan KP. Synthetic approaches towards cortistatins: evolution and progress through its ages. Org Biomol Chem 2020; 18:3965-3995. [PMID: 32420567 DOI: 10.1039/d0ob00770f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Cortistatins are a family of steroidal alkaloids with a unique pentacyclic skeleton, having immensely potent anti-angiogenetic activities. Given the scarcity in the natural availability of these compounds, their syntheses became major attractions in organic chemistry. Along with total synthesis of the most potent congeners in the family: cortistatins A and J, the synthesis of two other members have been successfully completed, while various other analogues have also been designed with variable degrees of biological activities. This review is an exhaustive coverage of the significant attempts towards constructing this highly challenging molecule and also aims to highlight the deep understanding of the structure-activity relationships of these compounds, which have been garnered over time.
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Affiliation(s)
- Satrajit Indu
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India.
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3
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Horwitz MA, Robins JG, Johnson JS. De Novo Synthesis of the DEF-Ring Stereotriad Core of the Veratrum Alkaloids. J Org Chem 2020; 85:6808-6814. [PMID: 32352768 PMCID: PMC7246867 DOI: 10.1021/acs.joc.0c00685] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The synthesis of the stereotriad core in the eastern portion of the Veratrum alkaloids jervine (1), cyclopamine (2), and veratramine (3) is reported. Starting from a known β-methyltyrosine derivative (8), the route utilizes a diastereoselective substrate-controlled 1,2-reduction to establish the stereochemistry of the vicinal amino alcohol motif embedded within the targets. Oxidative dearomatization is demonstrated to be a viable approach for the synthesis of the spirocyclic DE ring junction found in jervine and cyclopamine.
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Affiliation(s)
- Matthew A Horwitz
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - Jacob G Robins
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
| | - Jeffrey S Johnson
- Department of Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599-3290, United States
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4
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Indu S, Telore RD, Kaliappan KP. Construction of key building blocks towards the synthesis of cortistatins. Org Biomol Chem 2020; 18:2432-2446. [PMID: 32163085 DOI: 10.1039/d0ob00170h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
This work reports the construction of key building blocks towards the synthesis of cortistatins; a family of steroidal alkaloids. Cortistatin A, being a primary target due to its superior biological properties over other congeners, has been prepared by two different synthetic routes. Synthesis of the precursor to the heavily substituted A-ring starting from d-glucose and construction of the DE-ring junction employing a Hajos-Parrish ketone as a chiral pool have been demonstrated. Efforts are underway to assemble these key fragments and build towards the total synthesis of cortistatin A.
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Affiliation(s)
- Satrajit Indu
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Rahul D Telore
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Krishna P Kaliappan
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
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5
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Hu J, Jia Z, Xu K, Ding H. Total Syntheses of (+)-Stemarin and the Proposed Structures of Stemara-13(14)-en-18-ol and Stemara-13(14)-en-17-acetoxy-18-ol. Org Lett 2020; 22:1426-1430. [DOI: 10.1021/acs.orglett.0c00029] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jialei Hu
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Ziqi Jia
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Kaixiang Xu
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China
| | - Hanfeng Ding
- Department of Chemistry, Zhejiang University, Hangzhou 310058, China
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 311121, China
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6
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Lin M, Cui H, Hua Y, Zhang Y. Domino enyne metathesis en route to skeletally diverse, privileged scaffolds: synthesis of the tricyclic core of pseudolaric acid F. Org Chem Front 2019. [DOI: 10.1039/c9qo00477g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A domino enyne metathesis strategy for the efficient synthesis of skeletally diverse, privileged scaffolds has been developed.
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Affiliation(s)
- Minggui Lin
- Department of Chemistry and Key Laboratory of Chemical Biology of Fujian Province
- iChEM
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen
| | - Hao Cui
- Department of Chemistry and Key Laboratory of Chemical Biology of Fujian Province
- iChEM
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen
| | - Yuhui Hua
- Department of Chemistry and Key Laboratory of Chemical Biology of Fujian Province
- iChEM
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen
| | - Yandong Zhang
- Department of Chemistry and Key Laboratory of Chemical Biology of Fujian Province
- iChEM
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen
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7
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Bao W, Tao Y, Cheng J, Huang J, Cao J, Zhang M, Ye W, Wang B, Li Y, Zhu L, Lee CS. In(OTf) 3-Catalyzed Cascade Cyclization for Construction of Oxatricyclic Compounds. Org Lett 2018; 20:7912-7915. [PMID: 30543298 DOI: 10.1021/acs.orglett.8b03461] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A highly diastereoselective cascade cyclization reaction has been developed for establishing a series of oxatricyclic compounds using Chan's diene and simple keto alkynal substrates with only 1 mol % of In(OTf)3 as the catalyst in 82-92% yields. The potential utility of this synthetic strategy has been demonstrated in model studies for the construction the core structures of 1α,8α:4α,5α-diepoxy-4,5-dihydroosmitopsin and cortistatin A.
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Affiliation(s)
- Wenli Bao
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology , Peking University Shenzhen Graduate School , Shenzhen University Town, Xili, Shenzhen 518055 , China
| | - Yezi Tao
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology , Peking University Shenzhen Graduate School , Shenzhen University Town, Xili, Shenzhen 518055 , China
| | - Jiangqun Cheng
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology , Peking University Shenzhen Graduate School , Shenzhen University Town, Xili, Shenzhen 518055 , China
| | - Junrong Huang
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology , Peking University Shenzhen Graduate School , Shenzhen University Town, Xili, Shenzhen 518055 , China
| | - Jingming Cao
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology , Peking University Shenzhen Graduate School , Shenzhen University Town, Xili, Shenzhen 518055 , China
| | - Mengxun Zhang
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology , Peking University Shenzhen Graduate School , Shenzhen University Town, Xili, Shenzhen 518055 , China
| | - Weijian Ye
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology , Peking University Shenzhen Graduate School , Shenzhen University Town, Xili, Shenzhen 518055 , China
| | - Bo Wang
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology , Peking University Shenzhen Graduate School , Shenzhen University Town, Xili, Shenzhen 518055 , China
| | - Yang Li
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology , Peking University Shenzhen Graduate School , Shenzhen University Town, Xili, Shenzhen 518055 , China
| | - Lizhi Zhu
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology , Peking University Shenzhen Graduate School , Shenzhen University Town, Xili, Shenzhen 518055 , China.,Institute of Translational Medicine, Shenzhen Second People's Hospital , The First Affiliated Hospital of Shenzhen University, Health Science Center , Shenzhen 518035 , China
| | - Chi-Sing Lee
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology , Peking University Shenzhen Graduate School , Shenzhen University Town, Xili, Shenzhen 518055 , China.,Institute of Research and Continuing Edition (Shenzhen) , Hong Kong Baptist University , Industrialization Complex Building, Shenzhen Virtual University Park, Shenzhen 518000 , China.,Department of Chemistry , Hong Kong Baptist University , Kowloon Tong , Hong Kong SAR
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8
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Liu L, Cheng HL, Ma WQ, Hou SH, Tu YQ, Zhang FM, Zhang XM, Wang SH. Improved synthesis of 8-oxabicyclo[3.2.1]octanes via tandem C-H oxidation/oxa-[3,3] Cope rearrangement/aldol cyclization. Chem Commun (Camb) 2018; 54:196-199. [PMID: 29226934 DOI: 10.1039/c7cc08511g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A tandem C-H oxidation/oxa-[3,3] Cope rearrangement/aldol reaction of allylic silylethers promoted by T+BF4-(tempo oxoammonium tetrafluoroborate)/ZnBr2 has been successfully developed allowing the efficient construction of 8-oxabicyclo[3.2.1]octanes and their analogs with a wide substrate scope.
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Affiliation(s)
- Lin Liu
- State Key Laboratory of Applied Organic Chemistry & School of Pharmacy, Lanzhou University, Lanzhou 730000, P. R. China.
| | - Hai-Long Cheng
- State Key Laboratory of Applied Organic Chemistry & School of Pharmacy, Lanzhou University, Lanzhou 730000, P. R. China.
| | - Wen-Qiang Ma
- State Key Laboratory of Applied Organic Chemistry & School of Pharmacy, Lanzhou University, Lanzhou 730000, P. R. China.
| | - Si-Hua Hou
- State Key Laboratory of Applied Organic Chemistry & School of Pharmacy, Lanzhou University, Lanzhou 730000, P. R. China.
| | - Yong-Qiang Tu
- State Key Laboratory of Applied Organic Chemistry & School of Pharmacy, Lanzhou University, Lanzhou 730000, P. R. China. and School of Chemistry & Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, P. R. China.
| | - Fu-Min Zhang
- State Key Laboratory of Applied Organic Chemistry & School of Pharmacy, Lanzhou University, Lanzhou 730000, P. R. China.
| | - Xiao-Ming Zhang
- State Key Laboratory of Applied Organic Chemistry & School of Pharmacy, Lanzhou University, Lanzhou 730000, P. R. China.
| | - Shao-Hua Wang
- State Key Laboratory of Applied Organic Chemistry & School of Pharmacy, Lanzhou University, Lanzhou 730000, P. R. China.
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9
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Hu Y, Bai M, Yang Y, Zhou Q. Metal-catalyzed enyne cycloisomerization in natural product total synthesis. Org Chem Front 2017. [DOI: 10.1039/c7qo00702g] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Enyne cycloisomerization has become a powerful and attractive strategy for the construction of cyclic compounds, thus possessing great potential for applications in total synthesis of natural products and pharmaceuticals.
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Affiliation(s)
- Ying Hu
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
- P.R. China
| | - Miao Bai
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
- P.R. China
| | - Ying Yang
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
- P.R. China
| | - Qianghui Zhou
- College of Chemistry and Molecular Sciences
- Wuhan University
- Wuhan
- P.R. China
- The Institute for Advanced Studies
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10
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Aquino C, Greszler SN, Micalizio GC. Synthesis of the Cortistatin Pentacyclic Core by Alkoxide-Directed Metallacycle-Mediated Annulative Cross-Coupling. Org Lett 2016; 18:2624-7. [PMID: 27193994 PMCID: PMC4892975 DOI: 10.1021/acs.orglett.6b01048] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The pentacyclic core skeleton of the cortistatins has been prepared in a stereoselective fashion by strategic use of an alkoxide-directed metallacycle-mediated annulative cross-coupling. This metal-centered tandem reaction delivers a polyunsaturated hydrindane and establishes the C13 stereodefined quaternary center with high levels of stereocontrol. Subsequent regio- and stereoselective global hydroboration results in the realization of the DE-trans ring fusion and a tertiary alcohol at C8. Establishment of the ABC-tricyclic subunit was then accomplished through phenolic oxidation/trans-acetalization, chemoselective reduction, regioselective cleavage, and intramolecular alkylation at C5.
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Affiliation(s)
- Claudio Aquino
- Department of Chemistry, Dartmouth College, Burke Laboratory, Hanover, NH 03755
- Department of Chemistry, The Scripps Research Institute, Jupiter, FL 33458
| | | | - Glenn C. Micalizio
- Department of Chemistry, Dartmouth College, Burke Laboratory, Hanover, NH 03755
- Department of Chemistry, The Scripps Research Institute, Jupiter, FL 33458
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11
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Tan D, Xu M, Xu Z, Wu Y, You J. Several Enantiopure Chiral Building Blocks Derived fromD-Mannose and a Formal Synthesis of Dubiusamine C. CHINESE J CHEM 2016. [DOI: 10.1002/cjoc.201600050] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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12
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13
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14
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Abstract
In connection with its first synthesis, plakinidone was structurally revised to a five-membered lactone. The key evidence for the previous assignment of this natural product as a perlactone was proven to be a misinterpretation of the MS data because of unawareness of a facile air oxidation. The synthetic samples also allowed for detection of differences in (13)C NMR for diastereomers of remote stereogenic centers, along with the influence of the air oxidation on the optical rotation.
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Affiliation(s)
- Ze-Jun Xu
- State Key Laboratory of Bioorganic and Natural Product Chemistry, Collective Innovative Center for Chemistry and Life Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Lingling Road, Shanghai 200032, China
| | - Dong-Xing Tan
- State Key Laboratory of Bioorganic and Natural Product Chemistry, Collective Innovative Center for Chemistry and Life Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Lingling Road, Shanghai 200032, China
| | - Yikang Wu
- State Key Laboratory of Bioorganic and Natural Product Chemistry, Collective Innovative Center for Chemistry and Life Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Lingling Road, Shanghai 200032, China
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15
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Kuang L, Liu LL, Chiu P. Formal Total Synthesis of (+)-Cortistatins A and J. Chemistry 2015; 21:14287-91. [DOI: 10.1002/chem.201502890] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Indexed: 11/12/2022]
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16
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Kolodziej I, Green JR. Vinylogous Nicholas reactions in the synthesis of bi- and tricyclic cycloheptynedicobalt complexes. Org Biomol Chem 2015; 13:10852-64. [DOI: 10.1039/c5ob01684c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Lewis acid mediated intramolecular Nicholas reactions of allylic acetate enyne-Co2(CO)6 complexes afford bicyclic- and tricyclic cycloheptenyne-Co2(CO)6 complexes.
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Affiliation(s)
- Izabela Kolodziej
- Department of Chemistry and Biochemistry
- University of Windsor
- Windsor
- Canada
| | - James R. Green
- Department of Chemistry and Biochemistry
- University of Windsor
- Windsor
- Canada
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17
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Dev K, Maurya R. Facile synthesis of 11-aryl-6H-isoindolo[2,1-a]indol-6-ones via hypervalent iodine(iii)-promoted cascade cyclization. RSC Adv 2015. [DOI: 10.1039/c4ra10452h] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An efficient method was developed for the synthesis of a tetracyclic fused indole and isoindoline ring system, under metal-free conditions.
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Affiliation(s)
- Kapil Dev
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
- Academy of Scientific and Innovative Research
| | - Rakesh Maurya
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
- Academy of Scientific and Innovative Research
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18
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Synthesis and Anti-Angiogenic Activity of Cortistatin Analogs. Biosci Biotechnol Biochem 2014; 72:2992-7. [DOI: 10.1271/bbb.80562] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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19
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Affiliation(s)
- Lin Wei
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Mingxing Xiao
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Zhixiang Xie
- State Key Laboratory of Applied Organic Chemistry & College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
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20
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Zheng Z, Zhang-Negrerie D, Du Y, Zhao K. The applications of hypervalent iodine(III) reagents in the constructions of heterocyclic compounds through oxidative coupling reactions. Sci China Chem 2013. [DOI: 10.1007/s11426-013-5043-1] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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22
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Nicolaou KC, Hale CRH, Nilewski C, Ioannidou HA. Constructing molecular complexity and diversity: total synthesis of natural products of biological and medicinal importance. Chem Soc Rev 2012; 41:5185-238. [PMID: 22743704 PMCID: PMC3426871 DOI: 10.1039/c2cs35116a] [Citation(s) in RCA: 159] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The advent of organic synthesis and the understanding of the molecule as they occurred in the nineteenth century and were refined in the twentieth century constitute two of the most profound scientific developments of all time. These discoveries set in motion a revolution that shaped the landscape of the molecular sciences and changed the world. Organic synthesis played a major role in this revolution through its ability to construct the molecules of the living world and others like them whose primary element is carbon. Although the early beginnings of organic synthesis came about serendipitously, organic chemists quickly recognized its potential and moved decisively to advance and exploit it in myriad ways for the benefit of mankind. Indeed, from the early days of the synthesis of urea and the construction of the first carbon-carbon bond, the art of organic synthesis improved to impressively high levels of sophistication. Through its practice, today chemists can synthesize organic molecules--natural and designed--of all types of structural motifs and for all intents and purposes. The endeavor of constructing natural products--the organic molecules of nature--is justly called both a creative art and an exact science. Often called simply total synthesis, the replication of nature's molecules in the laboratory reflects and symbolizes the state of the art of synthesis in general. In the last few decades a surge in total synthesis endeavors around the world led to a remarkable collection of achievements that covers a wide ranging landscape of molecular complexity and diversity. In this article, we present highlights of some of our contributions in the field of total synthesis of natural products of biological and medicinal importance. For perspective, we also provide a listing of selected examples of additional natural products synthesized in other laboratories around the world over the last few years.
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Affiliation(s)
- K C Nicolaou
- Department of Chemistry and Skaggs Institute for Chemical Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, USA
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23
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Abstract
We describe herein the synthesis of a late-stage intermediate en route to cortistatin A. Key transformations included a Snieckus-like cascade sequence culminating in a 6π-electrocyclization, an alkylative dearomatization, and the stereoselective functionalization of the cortistatin A-ring. While the total synthesis we sought was not accomplished, the work sets the stage for several approaches to the preparation of novel analogs via diverted total synthesis.
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Affiliation(s)
- Zhang Wang
- Department of Chemistry, Columbia University, Havemeyer Hall, 3000 Broadway, New York, NY 10027
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24
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Fan Y, Feng P, Liu M, Pan H, Shi Y. A Concise Approach to the Dalesconol Skeleton. Org Lett 2011; 13:4494-7. [DOI: 10.1021/ol2015847] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Yukai Fan
- Beijing National Laboratory of Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China, and Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Pengju Feng
- Beijing National Laboratory of Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China, and Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Mao Liu
- Beijing National Laboratory of Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China, and Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Hongjie Pan
- Beijing National Laboratory of Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China, and Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Yian Shi
- Beijing National Laboratory of Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China, and Department of Chemistry, Colorado State University, Fort Collins, Colorado 80523, United States
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25
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Abstract
A concise, diastereoselective total synthesis of (±)-cortistatin J has been completed in 20 steps from furan. Key steps include an intramolecular [4 + 3] cyclization of a disubstituted furan with a (Z)-2-(trialkylsilyloxy)-2-enal to construct the tetracyclic core and a (Z)-vinylsilane/iminium ion cyclization to form the A ring.
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Affiliation(s)
- Mark G Nilson
- Department of Chemistry, Pennsylvania State University, University Park, Pennsylvania 16802, United States
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26
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Kotoku N, Sumii Y, Kobayashi M. Stereoselective synthesis of core structure of cortistatin A. Org Lett 2011; 13:3514-7. [PMID: 21651309 DOI: 10.1021/ol201327u] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A stereoselective synthesis of the core structure of cortistatin A (1), a novel antiangiogenic steroidal alkaloid from Indonesian marine sponge, is described. An 8-oxabicyclo[3.2.1]octene system, a characteristic B-ring structure of 1, was elaborated by a 7-endo selective intramolecular Heck cyclization and a subsequent acid-mediated oxy-Michael reaction.
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Affiliation(s)
- Naoyuki Kotoku
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka 565-0871, Japan.
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27
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Shi J, Manolikakes G, Yeh CH, Guerrero CA, Shenvi RA, Shigehisa H, Baran PS. Scalable synthesis of cortistatin A and related structures. J Am Chem Soc 2011; 133:8014-27. [PMID: 21539314 DOI: 10.1021/ja202103e] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Full details are provided for an improved synthesis of cortistatin A and related structures as well as the underlying logic and evolution of strategy. The highly functionalized cortistatin A-ring embedded with a key heteroadamantane was synthesized by a simple and scalable five-step sequence. A chemoselective, tandem geminal dihalogenation of an unactivated methyl group, a reductive fragmentation/trapping/elimination of a bromocyclopropane, and a facile chemoselective etherification reaction afforded the cortistatin A core, dubbed "cortistatinone". A selective Δ(16)-alkene reduction with Raney Ni provided cortistatin A. With this scalable and practical route, copious quantities of cortistatinone, Δ(16)-cortistatin A (the equipotent direct precursor to cortistatin A), and its related analogues were prepared for further biological studies.
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Affiliation(s)
- Jun Shi
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, USA
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28
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Yamashita S, Iso K, Kitajima K, Himuro M, Hirama M. Total Synthesis of Cortistatins A and J. J Org Chem 2011; 76:2408-25. [DOI: 10.1021/jo2002616] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Shuji Yamashita
- Department of Chemistry and ‡Research and Analytical Center for Giant Molecules, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
| | - Kentaro Iso
- Department of Chemistry and ‡Research and Analytical Center for Giant Molecules, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
| | - Kazuki Kitajima
- Department of Chemistry and ‡Research and Analytical Center for Giant Molecules, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
| | - Masafumi Himuro
- Department of Chemistry and ‡Research and Analytical Center for Giant Molecules, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
| | - Masahiro Hirama
- Department of Chemistry and ‡Research and Analytical Center for Giant Molecules, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan
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29
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Fang L, Chen Y, Huang J, Liu L, Quan J, Li CC, Yang Z. Formal Synthesis of Cortistatins. J Org Chem 2011; 76:2479-87. [DOI: 10.1021/jo102202t] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lichao Fang
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen 518055, China
| | - Yuan Chen
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen 518055, China
| | - Jun Huang
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen 518055, China
| | - Lianzhu Liu
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen 518055, China
| | - Junmin Quan
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen 518055, China
| | - Chuang-chuang Li
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen 518055, China
| | - Zhen Yang
- Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Shenzhen Graduate School of Peking University, Shenzhen 518055, China
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education and Beijing National Laboratory for Molecular Science (BNLMS), College of Chemistry, Peking University, Beijing 100871, China
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30
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31
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Kotoku N, Kobayashi M, Sumii Y, Hayashi T. Synthetic Study of Carbocyclic Core of Cortistatin A, an Anti-Angiogenic Steroidal Alkaloid from Marine Sponge. HETEROCYCLES 2011. [DOI: 10.3987/com-11-12195] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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32
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Yu F, Li G, Gao P, Gong H, Liu Y, Wu Y, Cheng B, Zhai H. Concise synthesis of the oxapentacyclic core of cortistatin A. Org Lett 2010; 12:5135-7. [PMID: 20925326 DOI: 10.1021/ol102058f] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A concise synthetic approach for constructing the oxapentacyclic framework of cortistatin A is described. The synthesis features a furan-oxyallyl [4 + 3] cycloaddition and double-intramolecular aldol reactions. In addition, an interesting core structure was obtained in 11 steps from furan by using our method.
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Affiliation(s)
- Fangmiao Yu
- The Key Laboratory of Synthetic Chemistry of Natural Substances and the State Key Laboratory of Bioorganic and Natural Products Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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33
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Abstract
The cortistatins are a recently identified class of marine natural products characterized by an unusual steroidal skeleton, which have been found to inhibit differentially the proliferation of various mammalian cells in culture by an unknown mechanism. We describe a comprehensive route for the synthesis of cortistatins from a common precursor, which in turn is assembled from two fragments of similar structural complexity. Cortistatins A and J, and for the first time K and L, have been synthesized in parallel processes from like intermediates prepared from a single compound. With the identification of facile laboratory transformations linking intermediates in the cortistatin L synthetic series with corresponding intermediates to cortistatins A and J, we have been led to speculate that somewhat related paths might occur in nature, offering potential sequencing and chemical detail for cortistatin biosynthetic pathways.
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Affiliation(s)
- Alec N. Flyer
- Harvard Dept. of Chemistry and Chemical Biology,12 Oxford St, Box 408 Cambridge, MA 02138
| | - Chong Si
- Harvard Dept. of Chemistry and Chemical Biology,12 Oxford St, Box 485 Cambridge, MA 02138
| | - Andrew G. Myers
- Harvard Dept. of Chemistry and Chemical Biology,12 Oxford St, Naito 201 Cambridge, MA 02138, Work Telephone Number: 617-495-5718, Fax Number: 617-495-4976
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34
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Cortez FDJ, Sarpong R. Ga(III)-catalyzed cycloisomerization approach to (+/-)-icetexone and (+/-)-epi-icetexone. Org Lett 2010; 12:1428-31. [PMID: 20192209 DOI: 10.1021/ol902959v] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A Ga(III)-catalyzed cycloisomerization reaction provides expedient access to a benzannulated cycloheptadiene bearing a cyano group, which has been applied to the syntheses of several icetexane diterpenoids including icetexone and epi-icetexone. Key to the synthesis is a novel in situ generated diazene rearrangement.
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35
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Affiliation(s)
- Tanja Gaich
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, 92037 La Jolla, California
| | - Phil S. Baran
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, 92037 La Jolla, California
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36
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Simmons EM, Hardin-Narayan AR, Guo X, Sarpong R. Formal total synthesis of (±)-cortistatin A. Tetrahedron 2010; 66:4696-4700. [PMID: 20672014 DOI: 10.1016/j.tet.2010.01.030] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A second-generation synthesis of the pentacyclic core of the cortistatins, a family of rearranged steroidal alkaloids that have recently attracted much attention, is reported. The improved sequence provides access to significant quantities of this key compound, which enabled a formal total synthesis of (±)-cortistatin A by conversion to the key Nicolaou/Hirama dienone. It is anticipated that this new, robust route to the pentacyclic core will facilitate the total synthesis of a range of natural products in the cortistatin family, as well as the construction of key structural analogs to probe the promising biological activity of these important compounds.
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Affiliation(s)
- Eric M Simmons
- Department of Chemistry, University of California, Berkeley, CA 94720, USA
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37
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Hardin Narayan AR, Simmons EM, Sarpong R. Synthetic Strategies Directed Towards the Cortistatin Family of Natural Products. European J Org Chem 2010. [DOI: 10.1002/ejoc.201000247] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | - Eric M. Simmons
- Department of Chemistry, University of Illinois, Urbana, Illinois 61820, USA
| | - Richmond Sarpong
- Department of Chemistry, University of California, Berkeley, California 94720, USA
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38
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Chen DYK, Tseng CC. Chemistry of the cortistatins--a novel class of anti-angiogenic agents. Org Biomol Chem 2010; 8:2900-11. [PMID: 20463995 DOI: 10.1039/c003935g] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthetic efforts culminating the construction of several highly advanced intermediates, and completed syntheses of the recently disclosed cortistatin family of anti-proliferative agents are described in this perspective.
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Affiliation(s)
- David Yu-Kai Chen
- Chemical Synthesis Laboratory@Biopolis, Institute of Chemical and Engineering Sciences, Agency for Science, Technology and Research, 11 Biopolis Way, The Helios Block, #03-08, Singapore 138667.
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39
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Affiliation(s)
- Wenyi Zhao
- Shasun Pharma Solutions, Incorporated, 10 Knightsbridge Road, Pistcataway, New Jersey 08854, USA
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40
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Liu Y, Xu W, Wang X. Gold(I)-Catalyzed Tandem Cyclization Approach to Tetracyclic Indolines. Org Lett 2010; 12:1448-51. [DOI: 10.1021/ol100153h] [Citation(s) in RCA: 116] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yongxiang Liu
- Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309
| | - Wenqing Xu
- Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309
| | - Xiang Wang
- Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309
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41
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42
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Cee VJ, Chen DYK, Lee MR, Nicolaou KC. Cortistatin A is a high-affinity ligand of protein kinases ROCK, CDK8, and CDK11. Angew Chem Int Ed Engl 2010; 48:8952-7. [PMID: 19844931 DOI: 10.1002/anie.200904778] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Victor J Cee
- Department of Medicinal Chemistry, Amgen Inc., One Amgen Center Drive, Thousand Oaks, CA 91320, USA.
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43
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The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2008. Coord Chem Rev 2010. [DOI: 10.1016/j.ccr.2009.07.018] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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44
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Baumgartner C, Ma S, Liu Q, Stoltz BM. Efforts toward rapid construction of the cortistatin A carbocyclic core via enyne-ene metathesis. Org Biomol Chem 2010; 8:2915-7. [DOI: 10.1039/c004275g] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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45
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46
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Frie JL, Jeffrey CS, Sorensen EJ. A hypervalent iodine-induced double annulation enables a concise synthesis of the pentacyclic core structure of the cortistatins. Org Lett 2009; 11:5394-7. [PMID: 19943697 PMCID: PMC3156445 DOI: 10.1021/ol902168g] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A stereocontrolled synthesis of a complex pentacycle embodying the molecular architecture of the cortistatin class of natural products was achieved from the (+)-Hajos-Parrish ketone. The cornerstone of our approach is a hypervalent iodine induced tandem intramolecular oxidative dearomatization and nitrile oxide cycloaddition. The manner in which these ring formations were orchestrated has yielded a rather concise strategy for synthesis.
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Affiliation(s)
- Jessica L. Frie
- Department of Chemistry, Princeton University, Frick Chemical Laboratory, Princeton, NJ 08544, USA
| | - Christopher S. Jeffrey
- Department of Chemistry, Princeton University, Frick Chemical Laboratory, Princeton, NJ 08544, USA
| | - Erik J. Sorensen
- Department of Chemistry, Princeton University, Frick Chemical Laboratory, Princeton, NJ 08544, USA
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47
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Cee V, Chen DK, Lee M, Nicolaou K. Cortistatin A is a High-Affinity Ligand of Protein Kinases ROCK, CDK8, and CDK11. Angew Chem Int Ed Engl 2009. [DOI: 10.1002/ange.200904778] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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48
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Shi J, Shigehisa H, Guerrero CA, Shenvi RA, Li CC, Baran PS. Stereodivergent synthesis of 17-alpha and 17-beta-alpharyl steroids: application and biological evaluation of D-ring cortistatin analogues. Angew Chem Int Ed Engl 2009; 48:4328-31. [PMID: 19434636 DOI: 10.1002/anie.200901116] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
One stereocenter makes all the difference: The synthesis and biological evaluation of 17-epi-cortistatin A is reported from a common intermediate used to procure natural cortistatin A. The synthesis features a unique stereocontrolled Raney-Ni reduction process that can be employed to reliably produce both alpha- and beta-configured D-ring aryl steroids. Biological evaluations of these "cortalogs" are reported for the first time.
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Affiliation(s)
- Jun Shi
- Department of Chemistry, The Scripps Research Institute, 10650 North Torrey Pines Road, La Jolla, CA 92037, USA
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49
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Magnus P, Littich R. Intramolecular Cyclopropene-Furan [2 + 4] Cycloaddition followed by a Cyclopropylcarbinyl Rearrangement to Synthesize the BCD Rings of Cortistatin A. Org Lett 2009; 11:3938-41. [DOI: 10.1021/ol901537n] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Philip Magnus
- Department of Chemistry and Biochemistry, University of Texas at Austin, 1 University Station A5300, Austin, Texas 78712-1167
| | - Ryan Littich
- Department of Chemistry and Biochemistry, University of Texas at Austin, 1 University Station A5300, Austin, Texas 78712-1167
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50
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Yamashita S, Kitajima K, Iso K, Hirama M. Efficient and stereoselective installation of isoquinoline: formal total synthesis of cortistatin A. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2009.02.038] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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