51
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Cox JB, Wood JL. Synthetic studies toward longeracemine: The intramolecular [4+2] cycloaddition of 3H-pyrroles. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.07.024] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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52
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Yamada R, Fukuyama T, Yokoshima S. Synthetic Studies of the Daphniphyllum Alkaloids: A Cooperative Reaction of Proximal Functional Groups Forming a Tetracyclic System. Org Lett 2018; 20:4504-4506. [DOI: 10.1021/acs.orglett.8b01800] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ryosuke Yamada
- Graduate School of Pharmaceutical Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - Tohru Fukuyama
- Graduate School of Pharmaceutical Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - Satoshi Yokoshima
- Graduate School of Pharmaceutical Sciences, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
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53
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Hu XM, Zhou B, Yang CL, Lin J, Yan SJ. Site-Selective Reaction of Enaminones and Enamine Esters for the Synthesis of Novel Diverse Morphan Derivatives. ACS OMEGA 2018; 3:5994-6005. [PMID: 31458790 PMCID: PMC6644497 DOI: 10.1021/acsomega.8b00726] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2018] [Accepted: 05/24/2018] [Indexed: 05/08/2023]
Abstract
An efficient and concise protocol was developed for the synthesis of diverse morphan derivatives 5-7 by the Michael and aza-Michael reaction of different types of quinone monoketals 1 or quinone imine ketals 2 with enaminones or enamine esters 3 promoted by 1,8-diazabicyclo[5.4.0]undec-7-ene in acetone at reflux. Notably, when cyclic enaminone 4 was used as a substrate in the aza-Michael and 1,2-addition reactions with quinone monoketals 1, they gave another novel morphan 8. This method is suitable for parallel synthesis of bridged ring compounds. As a result, highly diverse morphan derivatives were easily and efficiently prepared by the Michael/aza-Michael or aza-Michael/1,2-addition reactions.
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Affiliation(s)
- Xing-Mei Hu
- Key
Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University),
Ministry of Education and Yunnan Province, School of Chemical Science
and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Bei Zhou
- Key
Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University),
Ministry of Education and Yunnan Province, School of Chemical Science
and Technology, Yunnan University, Kunming 650091, P. R. China
- Key
Laboratory for Forest Resources Conservation and Utilization in the
Southwest Mountains of China, Ministry of Education, College of Life
Science, Southwest Forestry University, Kunming 650224, P. R. China
| | - Chang-Long Yang
- Key
Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University),
Ministry of Education and Yunnan Province, School of Chemical Science
and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Jun Lin
- Key
Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University),
Ministry of Education and Yunnan Province, School of Chemical Science
and Technology, Yunnan University, Kunming 650091, P. R. China
| | - Sheng-Jiao Yan
- Key
Laboratory of Medicinal Chemistry for Natural Resource (Yunnan University),
Ministry of Education and Yunnan Province, School of Chemical Science
and Technology, Yunnan University, Kunming 650091, P. R. China
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54
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Sasano Y, Koyama J, Yoshikawa K, Kanoh N, Kwon E, Iwabuchi Y. Stereocontrolled Construction of ABCD Tetracyclic Ring System with Vicinal All-Carbon Quaternary Stereogenic Centers of Calyciphylline A Type Alkaloids. Org Lett 2018; 20:3053-3056. [DOI: 10.1021/acs.orglett.8b01087] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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55
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Asymmetric synthesis of ABC tricyclic core in Daphniphyllum alkaloid 21-deoxy-macropodumine D. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.04.019] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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56
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Lopez AM, Ibrahim AA, Rosenhauer GJ, Sirinimal HS, Stockdill JL. Tin-Free Access to the ABC Core of the Calyciphylline A Alkaloids and Unexpected Formation of a D-Ring-Contracted Tetracyclic Core. Org Lett 2018; 20:2216-2219. [PMID: 29613805 PMCID: PMC6221184 DOI: 10.1021/acs.orglett.8b00544] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A tin-free strategy for the successful cyclization of a variety of internal alkyne-containing N-chloroamine precursors to the ABC core via cyclization of a neutral aminyl radical is established. Deuterium labeling experiments confirm that the solvent is the primary source of the final H atom in the cyclization cascade. These conditions enabled a streamlined route to a β-ketoester intermediate poised for intramolecular Knoevenagel condensation to construct the seven-membered D-ring of calyciphylline A alkaloids. However, exposure to CsF in t-BuOH at elevated temperatures led to an unexpected decarboxylation to form a D-ring-contracted tetracyclic core.
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Affiliation(s)
- Alberto M Lopez
- Department of Chemistry , Wayne State University , 5101 Cass Avenue , Detroit , Michigan 48202 , United States
| | - Ahmad A Ibrahim
- Department of Chemistry , Wayne State University , 5101 Cass Avenue , Detroit , Michigan 48202 , United States
| | - Gregory J Rosenhauer
- Department of Chemistry , Wayne State University , 5101 Cass Avenue , Detroit , Michigan 48202 , United States
| | - Hansamali S Sirinimal
- Department of Chemistry , Wayne State University , 5101 Cass Avenue , Detroit , Michigan 48202 , United States
| | - Jennifer L Stockdill
- Department of Chemistry , Wayne State University , 5101 Cass Avenue , Detroit , Michigan 48202 , United States
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57
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Catalytic Aza-Wacker Annulation: Tuning Mechanism by the Activation Mode of Amide and Enantioselective Syntheses of Melinonine-E and Strychnoxanthine. Org Lett 2018; 20:2386-2390. [DOI: 10.1021/acs.orglett.8b00725] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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58
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Zhang W, Ding M, Li J, Guo Z, Lu M, Chen Y, Liu L, Shen YH, Li A. Total Synthesis of Hybridaphniphylline B. J Am Chem Soc 2018; 140:4227-4231. [DOI: 10.1021/jacs.8b01681] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Wenhao Zhang
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Ming Ding
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Jian Li
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Zhicong Guo
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Ming Lu
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Yu Chen
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Lianchao Liu
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Yun-Heng Shen
- Department of Phytochemistry, School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai 200433, China
| | - Ang Li
- State Key Laboratory of Bioorganic and Natural Products Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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59
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Li J, Ye Y, Zhang Y. Cycloaddition/annulation strategies for the construction of multisubstituted pyrrolidines and their applications in natural product synthesis. Org Chem Front 2018. [DOI: 10.1039/c7qo01077j] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Pyrrolidines are privileged substructures of numerous bioactive natural products and drugs.
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Affiliation(s)
- Jundong Li
- Department of Chemistry and Key Laboratory of Chemical Biology of Fujian Province
- iChEM
- College of Chemistry and Chemical Engineering
- Xiamen University
- Xiamen
| | - Yilin Ye
- 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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60
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Wang C, Zhang S, Wang Y, Huang SH, Hong R. Total synthesis of strictamine: a tutorial for novel and efficient synthesis. Org Chem Front 2018. [DOI: 10.1039/c7qo00837f] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
The novelty and efficiency of the overall synthetic route are the key values being imparted to the younger generation of synthetic chemists. In this Highlights, synthesis of strictamine was tutored to students on the creativity of synthetic design.
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Affiliation(s)
- Chao Wang
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances
- Shanghai Institute of Organic Chemistry (CAS)
- Shanghai 200032
- China
- University of Chinese Academy of Sciences
| | - Shiju Zhang
- College of Chemical and Environmental Engineering
- Shanghai Institute of Technology
- Shanghai
- China
| | - Yan Wang
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances
- Shanghai Institute of Organic Chemistry (CAS)
- Shanghai 200032
- China
- University of Chinese Academy of Sciences
| | - Sha-Hua Huang
- College of Chemical and Environmental Engineering
- Shanghai Institute of Technology
- Shanghai
- China
| | - Ran Hong
- CAS Key Laboratory of Synthetic Chemistry of Natural Substances
- Shanghai Institute of Organic Chemistry (CAS)
- Shanghai 200032
- China
- University of Chinese Academy of Sciences
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61
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Kitabayashi Y, Fukuyama T, Yokoshima S. Synthesis of the [7-5-5] tricyclic core of Daphniphyllum alkaloids. Org Biomol Chem 2018; 16:3556-3559. [DOI: 10.1039/c8ob00859k] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The [7-5-5] tricyclic core of the Daphniphyllum alkaloids was constructed, featuring a Claisen-Ireland rearrangement to install the two contiguous stereogenic centers, E1cB elimination to form the tetrasubstituted C–C double bond, and a 2,3-Wittig rearrangement to construct the quaternary carbon.
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Affiliation(s)
| | - Tohru Fukuyama
- Graduate School of Pharmaceutical Sciences
- Nagoya University
- Nagoya
- Japan
| | - Satoshi Yokoshima
- Graduate School of Pharmaceutical Sciences
- Nagoya University
- Nagoya
- Japan
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62
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Abstract
The synthetic approach to the core framework of daphniglaucin-type Daphniphyllum alkaloids is described herein.
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Affiliation(s)
- Yuanyou Qiu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry and Molecular Engineering
- East China Normal University
- China
| | - Jiaxin Zhong
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry and Molecular Engineering
- East China Normal University
- China
| | - Shan Du
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry and Molecular Engineering
- East China Normal University
- China
| | - Shuanhu Gao
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes
- School of Chemistry and Molecular Engineering
- East China Normal University
- China
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development
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63
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Chen Y, Zhang W, Ren L, Li J, Li A. Total Syntheses of Daphenylline, Daphnipaxianine A, and Himalenine D. Angew Chem Int Ed Engl 2017; 57:952-956. [DOI: 10.1002/anie.201711482] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Indexed: 11/11/2022]
Affiliation(s)
- Yu Chen
- State Key Laboratory of Bioorganic and Natural Products Chemistry; Collaborative Innovation Center of Chemistry for Life Sciences; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Wenhao Zhang
- State Key Laboratory of Bioorganic and Natural Products Chemistry; Collaborative Innovation Center of Chemistry for Life Sciences; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Lu Ren
- State Key Laboratory of Bioorganic and Natural Products Chemistry; Collaborative Innovation Center of Chemistry for Life Sciences; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Jian Li
- State Key Laboratory of Bioorganic and Natural Products Chemistry; Collaborative Innovation Center of Chemistry for Life Sciences; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Ang Li
- State Key Laboratory of Bioorganic and Natural Products Chemistry; Collaborative Innovation Center of Chemistry for Life Sciences; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
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64
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Chen Y, Zhang W, Ren L, Li J, Li A. Total Syntheses of Daphenylline, Daphnipaxianine A, and Himalenine D. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201711482] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yu Chen
- State Key Laboratory of Bioorganic and Natural Products Chemistry; Collaborative Innovation Center of Chemistry for Life Sciences; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Wenhao Zhang
- State Key Laboratory of Bioorganic and Natural Products Chemistry; Collaborative Innovation Center of Chemistry for Life Sciences; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Lu Ren
- State Key Laboratory of Bioorganic and Natural Products Chemistry; Collaborative Innovation Center of Chemistry for Life Sciences; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Jian Li
- State Key Laboratory of Bioorganic and Natural Products Chemistry; Collaborative Innovation Center of Chemistry for Life Sciences; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
| | - Ang Li
- State Key Laboratory of Bioorganic and Natural Products Chemistry; Collaborative Innovation Center of Chemistry for Life Sciences; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Road Shanghai 200032 China
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65
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Shi H, Michaelides IN, Darses B, Jakubec P, Nguyen QNN, Paton RS, Dixon DJ. Total Synthesis of (−)-Himalensine A. J Am Chem Soc 2017; 139:17755-17758. [DOI: 10.1021/jacs.7b10956] [Citation(s) in RCA: 113] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Heyao Shi
- Department of Chemistry,
Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford, OX1 3TA, U.K
| | - Iacovos N. Michaelides
- Department of Chemistry,
Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford, OX1 3TA, U.K
| | - Benjamin Darses
- Department of Chemistry,
Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford, OX1 3TA, U.K
| | - Pavol Jakubec
- Department of Chemistry,
Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford, OX1 3TA, U.K
| | - Quynh Nhu N. Nguyen
- Department of Chemistry,
Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford, OX1 3TA, U.K
| | - Robert S. Paton
- Department of Chemistry,
Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford, OX1 3TA, U.K
| | - Darren J. Dixon
- Department of Chemistry,
Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford, OX1 3TA, U.K
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66
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67
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Li J, Zhang W, Zhang F, Chen Y, Li A. Total Synthesis of Longeracinphyllin A. J Am Chem Soc 2017; 139:14893-14896. [DOI: 10.1021/jacs.7b09186] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Jian Li
- State Key Laboratory of Bioorganic
and Natural Products Chemistry, Collaborative Innovation Center of
Chemistry for Life Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Wenhao Zhang
- State Key Laboratory of Bioorganic
and Natural Products Chemistry, Collaborative Innovation Center of
Chemistry for Life Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Fei Zhang
- State Key Laboratory of Bioorganic
and Natural Products Chemistry, Collaborative Innovation Center of
Chemistry for Life Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Yu Chen
- State Key Laboratory of Bioorganic
and Natural Products Chemistry, Collaborative Innovation Center of
Chemistry for Life Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Ang Li
- State Key Laboratory of Bioorganic
and Natural Products Chemistry, Collaborative Innovation Center of
Chemistry for Life Sciences, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
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68
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Shao H, Bao W, Jing ZR, Wang YP, Zhang FM, Wang SH, Tu YQ. Construction of the [6,5,7,5] Tetracyclic Core of Calyciphylline A Type Alkaloids via a Tandem Semipinacol Rearrangement/Nicholas Reaction. Org Lett 2017; 19:4648-4651. [PMID: 28836793 DOI: 10.1021/acs.orglett.7b02274] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A novel and efficient approach toward the assembly of the synthetically challenging tetracyclic [6,5,7,5] core structure of calyciphylline A-type alkaloids is developed. The synthetic route features a tandem semipinacol rearrangement/Nicholas reaction that has been devised strategically to construct the spirocyclic A/B ring and the sterically congested vicinal all-carbon quaternary carbon centers in high diastereoselectivity. Late-stage installation of the hydropyrrole ring and the strained 7-membered ring via a double-reductive amination and ring-closing metathesis, respectively, has also been realized.
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Affiliation(s)
- Hui Shao
- School of Chemistry & Chemical Engineering, Shanghai Jiao Tong University , Shanghai 200240, P. R. China
| | - Wen Bao
- State Key Laboratory of Applied Organic Chemistry & School of Pharmacy, Lanzhou University , Lanzhou 730000, P. R. China
| | - Ze-Ran Jing
- State Key Laboratory of Applied Organic Chemistry & School of Pharmacy, Lanzhou University , Lanzhou 730000, P. R. China
| | - Yun-Peng Wang
- State Key Laboratory of Applied Organic Chemistry & School of Pharmacy, Lanzhou University , Lanzhou 730000, P. R. China
| | - Fu-Min 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
| | - Yong-Qiang Tu
- School of Chemistry & Chemical Engineering, Shanghai Jiao Tong University , Shanghai 200240, P. R. China.,State Key Laboratory of Applied Organic Chemistry & School of Pharmacy, Lanzhou University , Lanzhou 730000, P. R. China
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69
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Zhai L, Tian X, Wang C, Cui Q, Li W, Huang SH, Yu ZX, Hong R. Construction of Morphan Derivatives by Nitroso-Ene Cyclization: Mechanistic Insight and Total Synthesis of (±)-Kopsone. Angew Chem Int Ed Engl 2017; 56:11599-11603. [DOI: 10.1002/anie.201706018] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Indexed: 12/26/2022]
Affiliation(s)
- Li Zhai
- Key Laboratory of Synthetic Chemistry of Natural Substances; Shanghai Institute of Organic Chemistry (CAS); 345 Lingling Road Shanghai 200032 China
- University of the Chinese Academy of Sciences; 19A Yuquan Road Beijing 100049 China
| | - Xuechao Tian
- School of Chemical and Environmental Engineering; Shanghai Institute of Technology; 100 Haiquan Road Shanghai 201418 China
| | - Chao Wang
- Key Laboratory of Synthetic Chemistry of Natural Substances; Shanghai Institute of Organic Chemistry (CAS); 345 Lingling Road Shanghai 200032 China
- University of the Chinese Academy of Sciences; 19A Yuquan Road Beijing 100049 China
| | - Qi Cui
- College of Chemistry; Peking University; Beijing 100871 China
| | - Wenhua Li
- Key Laboratory of Synthetic Chemistry of Natural Substances; Shanghai Institute of Organic Chemistry (CAS); 345 Lingling Road Shanghai 200032 China
- University of the Chinese Academy of Sciences; 19A Yuquan Road Beijing 100049 China
| | - Sha-Hua Huang
- School of Chemical and Environmental Engineering; Shanghai Institute of Technology; 100 Haiquan Road Shanghai 201418 China
| | - Zhi-Xiang Yu
- College of Chemistry; Peking University; Beijing 100871 China
| | - Ran Hong
- Key Laboratory of Synthetic Chemistry of Natural Substances; Shanghai Institute of Organic Chemistry (CAS); 345 Lingling Road Shanghai 200032 China
- University of the Chinese Academy of Sciences; 19A Yuquan Road Beijing 100049 China
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70
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Construction of Morphan Derivatives by Nitroso-Ene Cyclization: Mechanistic Insight and Total Synthesis of (±)-Kopsone. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201706018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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71
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Seizert CA, Ferreira EM. A boron-based Ireland-Claisen approach to the synthesis of pordamacrine A. Tetrahedron 2017. [DOI: 10.1016/j.tet.2016.11.030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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72
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Li JL, Shi HW, Wang Q, Chai YH, Yang J. Synthesis of the ABC Tricyclic System of Daphnicyclidin A. Org Lett 2017; 19:1497-1499. [PMID: 28296406 DOI: 10.1021/acs.orglett.7b00230] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jian Long Li
- Innovative Research Center
of Medicine, Key laboratory of Macromolecular Science of Shaanxi Province,
School of Chemistry and Chemical Engineering, Shaanxi Normal University, Chang’an Campus: No. 620, West Chang’an
Avenue, Chang’an District, Xi’an 710119, China
| | - Hong Wei Shi
- Innovative Research Center
of Medicine, Key laboratory of Macromolecular Science of Shaanxi Province,
School of Chemistry and Chemical Engineering, Shaanxi Normal University, Chang’an Campus: No. 620, West Chang’an
Avenue, Chang’an District, Xi’an 710119, China
| | - Qi Wang
- Innovative Research Center
of Medicine, Key laboratory of Macromolecular Science of Shaanxi Province,
School of Chemistry and Chemical Engineering, Shaanxi Normal University, Chang’an Campus: No. 620, West Chang’an
Avenue, Chang’an District, Xi’an 710119, China
| | - Yong Hai Chai
- Innovative Research Center
of Medicine, Key laboratory of Macromolecular Science of Shaanxi Province,
School of Chemistry and Chemical Engineering, Shaanxi Normal University, Chang’an Campus: No. 620, West Chang’an
Avenue, Chang’an District, Xi’an 710119, China
| | - Jun Yang
- Innovative Research Center
of Medicine, Key laboratory of Macromolecular Science of Shaanxi Province,
School of Chemistry and Chemical Engineering, Shaanxi Normal University, Chang’an Campus: No. 620, West Chang’an
Avenue, Chang’an District, Xi’an 710119, China
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73
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Chattopadhyay AK, Hanessian S. Recent Progress in the Chemistry of Daphniphyllum Alkaloids †. Chem Rev 2017; 117:4104-4146. [PMID: 28205435 DOI: 10.1021/acs.chemrev.6b00412] [Citation(s) in RCA: 116] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Daphniphyllum is an evergreen species known since 1826. After initial systematic investigations, more than 320 members of this family have been isolated, which comprise complex and fascinating structures. Unique azapolycyclic architectures containing one or more quaternary stereocenters render these alkaloids synthetically challenging. This review covers efforts toward the synthesis of Daphniphyllum alkaloids spanning the period from 2005 to the beginning of 2016, including reported biological activities as well as the isolation of new members of this genus.
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Affiliation(s)
- Amit Kumar Chattopadhyay
- Department of Chemistry, Université de Montréal , Post Office Box 6128, Station Centre Ville, Montreal, Quebec H3C 3J7, Canada
| | - Stephen Hanessian
- Department of Chemistry, Université de Montréal , Post Office Box 6128, Station Centre Ville, Montreal, Quebec H3C 3J7, Canada
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74
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Coussanes G, Bonjoch J. Synthesis of the Tetracyclic ABCD Ring Domain of Calyciphylline A-Type Alkaloids via Reductive Radical Cyclizations. Org Lett 2017; 19:878-881. [DOI: 10.1021/acs.orglett.7b00035] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Guilhem Coussanes
- Laboratori de Química
Orgànica, Facultat de Farmàcia, IBUB, Universitat de Barcelona, Av Joan XXIII s/n, 08028 Barcelona, Spain
| | - Josep Bonjoch
- Laboratori de Química
Orgànica, Facultat de Farmàcia, IBUB, Universitat de Barcelona, Av Joan XXIII s/n, 08028 Barcelona, Spain
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75
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Boudreault J, Lévesque F, Bélanger G. Studies toward Total Synthesis of (±)-Caldaphnidine C via One-Pot Sequential Intramolecular Vilsmeier–Haack and Azomethine Ylide 1,3-Dipolar Cycloaddition. J Org Chem 2016; 81:9247-9268. [DOI: 10.1021/acs.joc.6b01835] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jonathan Boudreault
- Département de Chimie, Université de Sherbrooke, 2500 boulevard
Université, Sherbrooke, Québec, J1K 2R1, Canada
| | - François Lévesque
- Département de Chimie, Université de Sherbrooke, 2500 boulevard
Université, Sherbrooke, Québec, J1K 2R1, Canada
| | - Guillaume Bélanger
- Département de Chimie, Université de Sherbrooke, 2500 boulevard
Université, Sherbrooke, Québec, J1K 2R1, Canada
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76
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Chattopadhyay AK, Berger G, Hanessian S. Strategies toward the Total Synthesis of Calyciphylline B-type Alkaloids: A Computational Perspective Aided by DFT Analysis. J Org Chem 2016; 81:5074-86. [PMID: 27251014 DOI: 10.1021/acs.joc.6b00638] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Herein we describe synthetic efforts toward the total synthesis of calyciphylline B-type alkaloids. In the process, we disclose a detailed DFT study of equilibrium geometries and transition states that explains the stereochemical outcome during the formation of critical intermediates. X-ray crystallographic analysis reveals interesting conformational features in the naturally occurring deoxycalyciphylline B and its synthetic congeners.
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Affiliation(s)
- Amit Kumar Chattopadhyay
- Department of Chemistry, Université de Montréal , Station Centre Ville, C.P. 6128, Montreal, Quebec H3C 3J7, Canada
| | - Gilles Berger
- Laboratoire de Chimie Pharmaceutique Organique, Campus Plaine CP205/5, Université Libre de Bruxelles , Boulevard du Triomphe, 1050 Brussels, Belgium
| | - Stephen Hanessian
- Department of Chemistry, Université de Montréal , Station Centre Ville, C.P. 6128, Montreal, Quebec H3C 3J7, Canada
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77
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Yamada R, Adachi Y, Yokoshima S, Fukuyama T. Total Synthesis of (−)‐Daphenylline. Angew Chem Int Ed Engl 2016; 55:6067-70. [DOI: 10.1002/anie.201601958] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Ryosuke Yamada
- Graduate School of Pharmaceutical Sciences Nagoya University Furo-cho, Chikusa-ku Nagoya 464-8601 Japan
| | - Yohei Adachi
- Graduate School of Pharmaceutical Sciences University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Satoshi Yokoshima
- Graduate School of Pharmaceutical Sciences Nagoya University Furo-cho, Chikusa-ku Nagoya 464-8601 Japan
| | - Tohru Fukuyama
- Graduate School of Pharmaceutical Sciences Nagoya University Furo-cho, Chikusa-ku Nagoya 464-8601 Japan
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78
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Yamada R, Adachi Y, Yokoshima S, Fukuyama T. Total Synthesis of (−)‐Daphenylline. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201601958] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ryosuke Yamada
- Graduate School of Pharmaceutical Sciences Nagoya University Furo-cho, Chikusa-ku Nagoya 464-8601 Japan
| | - Yohei Adachi
- Graduate School of Pharmaceutical Sciences University of Tokyo 7-3-1 Hongo, Bunkyo-ku Tokyo 113-0033 Japan
| | - Satoshi Yokoshima
- Graduate School of Pharmaceutical Sciences Nagoya University Furo-cho, Chikusa-ku Nagoya 464-8601 Japan
| | - Tohru Fukuyama
- Graduate School of Pharmaceutical Sciences Nagoya University Furo-cho, Chikusa-ku Nagoya 464-8601 Japan
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79
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Büschleb M, Dorich S, Hanessian S, Tao D, Schenthal KB, Overman LE. Synthetic Strategies toward Natural Products Containing Contiguous Stereogenic Quaternary Carbon Atoms. Angew Chem Int Ed Engl 2016; 55:4156-86. [PMID: 26836448 PMCID: PMC4865016 DOI: 10.1002/anie.201507549] [Citation(s) in RCA: 251] [Impact Index Per Article: 31.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Indexed: 11/06/2022]
Abstract
Strategies for the total synthesis of complex natural products that contain two or more contiguous stereogenic quaternary carbon atoms in their intricate structures are reviewed with 12 representative examples. Emphasis has been put on methods to create quaternary carbon stereocenters, including syntheses of the same natural product by different groups, thereby showcasing the diversity of thought and individual creativity. A compendium of selected natural products containing two or more contiguous stereogenic quaternary carbon atoms and key reactions in their total or partial syntheses is provided in the Supporting Information.
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Affiliation(s)
- Martin Büschleb
- Department of Chemistry, Université de Montréal, Station Centre-Ville, C. P. 6128, Montréal, Qc, H3C 3J7, Canada
| | - Stéphane Dorich
- Department of Chemistry, Université de Montréal, Station Centre-Ville, C. P. 6128, Montréal, Qc, H3C 3J7, Canada
| | - Stephen Hanessian
- Department of Chemistry, Université de Montréal, Station Centre-Ville, C. P. 6128, Montréal, Qc, H3C 3J7, Canada.
| | - Daniel Tao
- Department of Chemistry, University of California, 1102 Natural Sciences II, Irvine, CA, 92697-2025, USA
| | - Kyle B Schenthal
- Department of Chemistry, University of California, 1102 Natural Sciences II, Irvine, CA, 92697-2025, USA
| | - Larry E Overman
- Department of Chemistry, University of California, 1102 Natural Sciences II, Irvine, CA, 92697-2025, USA
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80
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Chattopadhyay AK, Menz H, Ly VL, Dorich S, Hanessian S. Synthesis of a Model Tetracyclic Core Structure of Calyciphylline B-Type Alkaloids. J Org Chem 2016; 81:2182-8. [PMID: 26878089 DOI: 10.1021/acs.joc.5b02875] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Herein, we report the enantioselective synthesis of a functionalized aza-octahydropentalene and its elaboration to a model tetracyclic core structure of calyciphylline B-type alkaloids.
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Affiliation(s)
- Amit Kumar Chattopadhyay
- Department of Chemistry, Université de Montréal , Station Centre Ville, C.P. 6128, Montreal, QC, H3C 3J7, Canada
| | - Helge Menz
- Department of Chemistry, Université de Montréal , Station Centre Ville, C.P. 6128, Montreal, QC, H3C 3J7, Canada
| | - Vu Linh Ly
- Department of Chemistry, Université de Montréal , Station Centre Ville, C.P. 6128, Montreal, QC, H3C 3J7, Canada
| | - Stéphane Dorich
- Department of Chemistry, Université de Montréal , Station Centre Ville, C.P. 6128, Montreal, QC, H3C 3J7, Canada
| | - Stephen Hanessian
- Department of Chemistry, Université de Montréal , Station Centre Ville, C.P. 6128, Montreal, QC, H3C 3J7, Canada
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81
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Murai K, Matsuura K, Aoyama H, Fujioka H. Oxidative Rearrangement via in Situ Generated N-Chloroamine: Synthesis of Fused Tetrahydroisoquinolines. Org Lett 2016; 18:1314-7. [PMID: 26926911 DOI: 10.1021/acs.orglett.6b00233] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An oxidative rearrangement reaction of spiro tetrahydroisoquinolines has been developed for the synthesis of fused tetrahydroisoquinolines using in situ generated N-chloroamines. The reaction proceeds via initial chlorination of an amine, followed by a 1,2-carbon to nitrogen migration, and nucleophilic trapping of a ketiminium ion intermediate in a one-pot operation. The electrophilic nature of N-chloroamines allowed for the carbon-nitrogen bond formation in this reation.
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Affiliation(s)
- Kenichi Murai
- Graduate School of Pharmaceutical Sciences, Osaka University , 1-6 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Kei Matsuura
- Graduate School of Pharmaceutical Sciences, Osaka University , 1-6 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Hiroshi Aoyama
- Graduate School of Pharmaceutical Sciences, Osaka University , 1-6 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Hiromichi Fujioka
- Graduate School of Pharmaceutical Sciences, Osaka University , 1-6 Yamada-oka, Suita, Osaka 565-0871, Japan
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82
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Zhang H, Shyaula SL, Li JY, Li J, Yue JM. Himalensines A and B, Alkaloids from Daphniphyllum himalense. Org Lett 2016; 18:1202-5. [PMID: 26914844 DOI: 10.1021/acs.orglett.6b00362] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Chemical investigation into the alkaloidal constituents of the Nepalese Daphniphyllum himalense has returned two new compounds, himalensines A (1) and B (2), with unprecedented carbon skeletons. Structures of the two alkaloids have been characterized on the basis of spectroscopic methods, especially via 2D NMR data analysis. Himalensine B (2) showed marginal inhibitory activities against two kinases, PTP1B and IKK-β.
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Affiliation(s)
- Hua Zhang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , 555 Zu Chong Zhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, P. R. China
| | - Sajan L Shyaula
- Nepal Academy of Science and Technology , Khumaltar, Lalitpur, G.P.O. Box 3323, Kathmandu 44700, Nepal
| | - Jing-Ya Li
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , 555 Zu Chong Zhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, P. R. China
| | - Jia Li
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , 555 Zu Chong Zhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, P. R. China
| | - Jian-Min Yue
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , 555 Zu Chong Zhi Road, Zhangjiang Hi-Tech Park, Shanghai 201203, P. R. China
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83
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Büschleb M, Dorich S, Hanessian S, Tao D, Schenthal KB, Overman LE. Strategien für die Synthese von Naturstoffen mit benachbarten stereogenen quartären Kohlenstoffatomen. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201507549] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Martin Büschleb
- Department of Chemistry; Université de Montréal, Station Centre-Ville; C. P. 6128 Montréal Qc H3C 3J7 Kanada
| | - Stéphane Dorich
- Department of Chemistry; Université de Montréal, Station Centre-Ville; C. P. 6128 Montréal Qc H3C 3J7 Kanada
| | - Stephen Hanessian
- Department of Chemistry; Université de Montréal, Station Centre-Ville; C. P. 6128 Montréal Qc H3C 3J7 Kanada
| | - Daniel Tao
- Department of Chemistry; University of California; 1102 Natural Sciences II Irvine CA 92697-2025 USA
| | - Kyle B. Schenthal
- Department of Chemistry; University of California; 1102 Natural Sciences II Irvine CA 92697-2025 USA
| | - Larry E. Overman
- Department of Chemistry; University of California; 1102 Natural Sciences II Irvine CA 92697-2025 USA
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84
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Chattopadhyay AK, Ly VL, Jakkepally S, Berger G, Hanessian S. Total Synthesis of Isodaphlongamine H: A Possible Biogenetic Conundrum. Angew Chem Int Ed Engl 2016; 55:2577-81. [DOI: 10.1002/anie.201510861] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Indexed: 11/08/2022]
Affiliation(s)
- Amit Kumar Chattopadhyay
- Department of Chemistry; Université de Montréal; Station Centre Ville, C.P. 6128 Montréal Qc H3C 3J7 Canada
| | - Vu Linh Ly
- Department of Chemistry; Université de Montréal; Station Centre Ville, C.P. 6128 Montréal Qc H3C 3J7 Canada
| | - Shashidhar Jakkepally
- Department of Chemistry; Université de Montréal; Station Centre Ville, C.P. 6128 Montréal Qc H3C 3J7 Canada
| | - Gilles Berger
- Department of Chemistry; Université de Montréal; Station Centre Ville, C.P. 6128 Montréal Qc H3C 3J7 Canada
| | - Stephen Hanessian
- Department of Chemistry; Université de Montréal; Station Centre Ville, C.P. 6128 Montréal Qc H3C 3J7 Canada
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85
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86
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Stockdill JL, Lopez AM, Ibrahim AA. Toward the ABCD Core of the Calyciphylline A-Type Daphniphyllum Alkaloids: Solvent non-Innocence in Neutral Aminyl Radical Cyclizations. Tetrahedron Lett 2015; 56:3503-3506. [PMID: 26028785 DOI: 10.1016/j.tetlet.2015.01.121] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
The Daphniphyllum alkaloids remain an attractive target in the synthetic community because of their unique framework and promising biological activities. We have shown that the ABC core of the calyciphylline A-type alkaloids can be rapidly accessed via the tandem cyclization of a neutral aminyl radical with a polarized cyclic olefin. Deuterium labeling experiments and reactions omitting a tin hydride reagent suggest that the solvent is the major source of the terminating hydrogen atom in the cyclization cascade. Incorporation of an internal alkyne in the radical pathway was tolerated in the reaction, and it provided the necessary atoms to enable completion of the D ring of the calyciphylline A-type alkaloids.
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Affiliation(s)
- Jennifer L Stockdill
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, MI 48202, USA
| | - Alberto M Lopez
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, MI 48202, USA
| | - Ahmad A Ibrahim
- Department of Chemistry, Wayne State University, 5101 Cass Avenue, Detroit, MI 48202, USA
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87
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Diaba F, Martínez-Laporta A, Coussanes G, Fernández I, Bonjoch J. Synthesis of the ABC fragment of calyciphylline A-type Daphniphyllum alkaloids. Tetrahedron 2015. [DOI: 10.1016/j.tet.2014.11.044] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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88
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Ma D, Cheng H, Huang C, Xu L. Synthesis of the azatricyclic ACD ring system of calyciphylline A-type Daphniphyllum alkaloids via a nonstabilized azomethine ylide generated by desilylation. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.03.097] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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89
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Gammack Yamagata AD, Datta S, Jackson KE, Stegbauer L, Paton RS, Dixon DJ. Enantioselective desymmetrization of prochiral cyclohexanones by organocatalytic intramolecular Michael additions to α,β-unsaturated esters. Angew Chem Int Ed Engl 2015; 54:4899-903. [PMID: 25727215 PMCID: PMC4678487 DOI: 10.1002/anie.201411924] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Indexed: 01/09/2023]
Abstract
A new catalytic asymmetric desymmetrization reaction for the synthesis of enantioenriched derivatives of 2-azabicyclo[3.3.1]nonane, a key motif common to many alkaloids, has been developed. Employing a cyclohexanediamine-derived primary amine organocatalyst, a range of prochiral cyclohexanone derivatives possessing an α,β-unsaturated ester moiety linked to the 4-position afforded the bicyclic products, which possess three stereogenic centers, as single diastereoisomers in high enantioselectivity (83-99% ee) and in good yields (60-90%). Calculations revealed that stepwise C-C bond formation and proton transfer via a chair-shaped transition state dictate the exclusive endo selectivity and enabled the development of a highly enantioselective primary amine catalyst.
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Affiliation(s)
- Adam D Gammack Yamagata
- Department of Chemistry, Chemistry Research LaboratoryUniversity of Oxford, Mansfield Road, Oxford, OX1 3TA (UK)
| | - Swarup Datta
- Department of Chemistry, Chemistry Research LaboratoryUniversity of Oxford, Mansfield Road, Oxford, OX1 3TA (UK)
| | - Kelvin E Jackson
- Department of Chemistry, Chemistry Research LaboratoryUniversity of Oxford, Mansfield Road, Oxford, OX1 3TA (UK)
| | - Linus Stegbauer
- Department of Chemistry, Chemistry Research LaboratoryUniversity of Oxford, Mansfield Road, Oxford, OX1 3TA (UK)
| | - Robert S Paton
- Department of Chemistry, Chemistry Research LaboratoryUniversity of Oxford, Mansfield Road, Oxford, OX1 3TA (UK)
| | - Darren J Dixon
- Department of Chemistry, Chemistry Research LaboratoryUniversity of Oxford, Mansfield Road, Oxford, OX1 3TA (UK)
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90
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Shvartsbart A, Smith AB. The daphniphyllum alkaloids: total synthesis of (-)-calyciphylline N. J Am Chem Soc 2015; 137:3510-9. [PMID: 25756504 PMCID: PMC4394112 DOI: 10.1021/ja503899t] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2014] [Indexed: 01/14/2023]
Abstract
Presented here is a full account on the development of a strategy culminating in the first total synthesis of the architecturally complex daphniphyllum alkaloid, (-)-calyciphylline N. Highlights of the approach include a highly diastereoselective, intramolecular Diels-Alder reaction of a silicon-tethered acrylate; an efficient Stille carbonylation of a sterically encumbered vinyl triflate; a one-pot Nazarov cyclization/proto-desilylation sequence; and the chemoselective hydrogenation of a fully substituted diene ester.
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Affiliation(s)
| | - Amos B. Smith
- Department of Chemistry,
Laboratory for Research on the Structure of Matter, and Monell Chemical
Senses Center, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
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91
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Sato H, Uzu M. [Attractive target for cancer, gap junction and its components, connexin]. Nihon Yakurigaku Zasshi 2015; 145:74-9. [PMID: 25747018 DOI: 10.1254/fpj.145.74] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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92
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Gammack Yamagata AD, Datta S, Jackson KE, Stegbauer L, Paton RS, Dixon DJ. Enantioselective Desymmetrization of Prochiral Cyclohexanones by Organocatalytic Intramolecular Michael Additions to α,β-Unsaturated Esters. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201411924] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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93
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Hayakawa I, Niida K, Kigoshi H. Construction of the [6-7-5-5] tetracyclic core of all the carbocyclic frameworks of yuzurimine-type alkaloids. Chem Commun (Camb) 2015; 51:11568-71. [DOI: 10.1039/c5cc03479e] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Construction of the [6-7-5-5] tetracarbocyclic core of yuzurimine-type alkaloids was achieved by using a unique in situ intramolecular Wittig reaction and Sm-mediated cyclization as key steps.
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Affiliation(s)
- Ichiro Hayakawa
- Division of Applied Chemistry
- Graduate School of Natural Science and Technology
- Okayama University
- Okayama 700-8530
- Japan
| | - Keisuke Niida
- Department of Chemistry
- Graduate School of Pure and Applied Sciences
- University of Tsukuba
- Tsukuba 305-8571
- Japan
| | - Hideo Kigoshi
- Department of Chemistry
- Graduate School of Pure and Applied Sciences
- University of Tsukuba
- Tsukuba 305-8571
- Japan
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94
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Guo JJ, Li Y, Cheng B, Xu T, Tao C, Yang X, Zhang D, Yan G, Zhai H. Expedient Construction of the [5-6-7] Tricyclic Core of Calyciphylline A-Type Alkaloids. Chem Asian J 2014; 10:865-8. [DOI: 10.1002/asia.201403061] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2014] [Indexed: 11/09/2022]
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95
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Li L, Hu Q, Zhou P, Xie H, Zhang X, Zhang H, Hu Y, Yin F, Hu Y. One-step synthesis of diazaspiro[4.5]decane scaffolds with exocyclic double bonds. Org Biomol Chem 2014; 12:5356-9. [PMID: 24956492 DOI: 10.1039/c4ob00516c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Unactivated yne-en-ynes reacted with a range of substituted aryl halides in the presence of Pd(OAc)2-PPh3 to afford diazaspiro[4.5]decane with exocyclic double bonds. Three carbon-carbon bonds are formed in this domino reaction, which involves highly regioselective C-C coupling and spiro scaffold steps.
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Affiliation(s)
- Lidong Li
- Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Key Laboratory of Molecular-Based Materials, School of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China.
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96
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Darses B, Michaelides IN, Dixon DJ. Facile multi-decagram synthesis of methyl but-2-ynoate. Org Chem Front 2014. [DOI: 10.1039/c3qo00072a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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