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Zhang MZ, Tian J, Yuan M, Peng WQ, Wang YZ, Wang P, Liu L, Gou Q, Huang H, Chen T. Visible light-induced aerobic dioxygenation of α,β-unsaturated amides/alkenes toward selective synthesis of β-oxy alcohols using rose bengal as a photosensitizer. Org Chem Front 2021. [DOI: 10.1039/d1qo00149c] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
The first visible light-induced aerobic dioxygenation of alkenes for the selective synthesis of β-oxy alcohols was developed using non-toxic rose bengal as a photosensitizer.
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Affiliation(s)
- Chuan Wang
- Department of Chemistry; University of Science and Technology; 96 Jinzhai Road Hefei Anhui 230026 P. R. China
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4
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Davies SG, Fletcher AM, Roberts PM, Thomson JE. The conjugate addition of enantiomerically pure lithium amides as chiral ammonia equivalents part III: 2012–2017. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.tetasy.2017.10.031] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Noda N, Nambu H, Fujiwara T, Yakura T. Total Synthesis of Sphingofungin E and 4,5-Di-epi-sphingofungin E. Chem Pharm Bull (Tokyo) 2017; 65:687-696. [PMID: 28674344 DOI: 10.1248/cpb.c17-00322] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Total synthesis of sphingofungin E and 4,5-di-epi-sphingofungin E was achieved from an intermediate same as that of myriocin and mycestericin D via antipodal stereoselective dihydroxylations.
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Affiliation(s)
- Narumi Noda
- Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama
| | - Hisanori Nambu
- Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama
| | - Tomoya Fujiwara
- Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama
| | - Takayuki Yakura
- Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama
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Zeng J, Sun G, Yao W, Zhu Y, Wang R, Cai L, Liu K, Zhang Q, Liu XW, Wan Q. 3-Aminodeoxypyranoses in Glycosylation: Diversity-Oriented Synthesis and Assembly in Oligosaccharides. Angew Chem Int Ed Engl 2017; 56:5227-5231. [DOI: 10.1002/anie.201700178] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 02/10/2017] [Indexed: 12/12/2022]
Affiliation(s)
- Jing Zeng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation; School of Pharmacy; Huazhong University of Science and Technology; 13 Hangkong Road, Wuhan Hubei 430030 China
| | - Guangfei Sun
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation; School of Pharmacy; Huazhong University of Science and Technology; 13 Hangkong Road, Wuhan Hubei 430030 China
| | - Wang Yao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation; School of Pharmacy; Huazhong University of Science and Technology; 13 Hangkong Road, Wuhan Hubei 430030 China
| | - Yangbin Zhu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation; School of Pharmacy; Huazhong University of Science and Technology; 13 Hangkong Road, Wuhan Hubei 430030 China
| | - Ruobin Wang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation; School of Pharmacy; Huazhong University of Science and Technology; 13 Hangkong Road, Wuhan Hubei 430030 China
| | - Lei Cai
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation; School of Pharmacy; Huazhong University of Science and Technology; 13 Hangkong Road, Wuhan Hubei 430030 China
| | - Ke Liu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation; School of Pharmacy; Huazhong University of Science and Technology; 13 Hangkong Road, Wuhan Hubei 430030 China
| | - Qian Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation; School of Pharmacy; Huazhong University of Science and Technology; 13 Hangkong Road, Wuhan Hubei 430030 China
| | - Xue-Wei Liu
- Division of Chemistry and Biological Chemistry; School of Physical and Mathematical Sciences; Nanyang Technological University; Singapore
| | - Qian Wan
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation; School of Pharmacy; Huazhong University of Science and Technology; 13 Hangkong Road, Wuhan Hubei 430030 China
- Institute of Brain Research; Huazhong University of Science and Technology; China
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7
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Zeng J, Sun G, Yao W, Zhu Y, Wang R, Cai L, Liu K, Zhang Q, Liu XW, Wan Q. 3-Aminodeoxypyranoses in Glycosylation: Diversity-Oriented Synthesis and Assembly in Oligosaccharides. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201700178] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Jing Zeng
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation; School of Pharmacy; Huazhong University of Science and Technology; 13 Hangkong Road, Wuhan Hubei 430030 China
| | - Guangfei Sun
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation; School of Pharmacy; Huazhong University of Science and Technology; 13 Hangkong Road, Wuhan Hubei 430030 China
| | - Wang Yao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation; School of Pharmacy; Huazhong University of Science and Technology; 13 Hangkong Road, Wuhan Hubei 430030 China
| | - Yangbin Zhu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation; School of Pharmacy; Huazhong University of Science and Technology; 13 Hangkong Road, Wuhan Hubei 430030 China
| | - Ruobin Wang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation; School of Pharmacy; Huazhong University of Science and Technology; 13 Hangkong Road, Wuhan Hubei 430030 China
| | - Lei Cai
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation; School of Pharmacy; Huazhong University of Science and Technology; 13 Hangkong Road, Wuhan Hubei 430030 China
| | - Ke Liu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation; School of Pharmacy; Huazhong University of Science and Technology; 13 Hangkong Road, Wuhan Hubei 430030 China
| | - Qian Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation; School of Pharmacy; Huazhong University of Science and Technology; 13 Hangkong Road, Wuhan Hubei 430030 China
| | - Xue-Wei Liu
- Division of Chemistry and Biological Chemistry; School of Physical and Mathematical Sciences; Nanyang Technological University; Singapore
| | - Qian Wan
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation; School of Pharmacy; Huazhong University of Science and Technology; 13 Hangkong Road, Wuhan Hubei 430030 China
- Institute of Brain Research; Huazhong University of Science and Technology; China
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Brambilla M, Davies SG, Fletcher AM, Roberts PM, Thomson JE, Zimmer D. Pyrrolizidines, indolizidines and quinolizidines via a double reductive cyclisation protocol: concise asymmetric syntheses of (+)-trachelanthamidine, (+)-tashiromine and (+)-epilupinine. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.09.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Davies SG, Figuccia ALA, Fletcher Paul AM, Roberts M, Thomson JE. Asymmetric Syntheses of (−)-ADMJ and (+)-ADANJ: 2-Deoxy-2-amino Analogues of (−)-1-Deoxymannojirimycin and (+)-1-Deoxyallonojirimycin. J Org Chem 2016; 81:6481-95. [DOI: 10.1021/acs.joc.6b01107] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Stephen G. Davies
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Aude L. A. Figuccia
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - Ai M. Fletcher Paul
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - M. Roberts
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, United Kingdom
| | - James E. Thomson
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford OX1 3TA, United Kingdom
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Csatayová K, Davies SG, Figuccia AL, Fletcher AM, Ford JG, Lee JA, Roberts PM, Saward BG, Song H, Thomson JE. Asymmetric syntheses of polysubstituted homoprolines and homoprolinols. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.10.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Davies SG, Fletcher AM, Thomson JE. Hydrogen bond directed epoxidation: diastereoselective olefinic oxidation of allylic alcohols and amines. Org Biomol Chem 2015; 12:4544-9. [PMID: 24854106 DOI: 10.1039/c4ob00616j] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This article compares the diastereoselective epoxidation of acyclic and cyclic allylic alcohols, with the chemo- and diastereoselective olefinic oxidation of a range of acyclic and cyclic allylic amines. The diastereoselectivity in these systems is compared and a discussion about the origin of this high diastereocontrol is also presented. The ammonium directed epoxidation methodology has been extended to more complex substrates and representative applications of this protocol in natural product synthesis are also summarised.
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Affiliation(s)
- Stephen G Davies
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford, Mansfield Road, Oxford, OX1 3TA, UK.
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Concise total asymmetric syntheses of (−)-fagomine, two of its epimers, and two seven-membered ring congeners. Tetrahedron 2015. [DOI: 10.1016/j.tet.2014.12.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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13
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Brennan MB, Csatayová K, Davies SG, Fletcher AM, Green WD, Lee JA, Roberts PM, Russell AJ, Thomson JE. Syntheses of Dihydroconduramines (±)-B-1, (±)-E-1, and (±)-F-1 via Diastereoselective Epoxidation of N-Protected 4-Aminocyclohex-2-en-1-ols. J Org Chem 2015; 80:6609-18. [DOI: 10.1021/acs.joc.5b00716] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Méabh B. Brennan
- Department of Chemistry,
Chemistry Research Laboratory, University of Oxford, Mansfield
Road, Oxford OX1 3TA, United Kingdom
| | - Kristína Csatayová
- Department of Chemistry,
Chemistry Research Laboratory, University of Oxford, Mansfield
Road, Oxford OX1 3TA, United Kingdom
| | - Stephen G. Davies
- Department of Chemistry,
Chemistry Research Laboratory, University of Oxford, Mansfield
Road, Oxford OX1 3TA, United Kingdom
| | - Ai M. Fletcher
- Department of Chemistry,
Chemistry Research Laboratory, University of Oxford, Mansfield
Road, Oxford OX1 3TA, United Kingdom
| | - William D. Green
- Department of Chemistry,
Chemistry Research Laboratory, University of Oxford, Mansfield
Road, Oxford OX1 3TA, United Kingdom
| | - James A. Lee
- Department of Chemistry,
Chemistry Research Laboratory, University of Oxford, Mansfield
Road, Oxford OX1 3TA, United Kingdom
| | - Paul M. Roberts
- Department of Chemistry,
Chemistry Research Laboratory, University of Oxford, Mansfield
Road, Oxford OX1 3TA, United Kingdom
| | - Angela J. Russell
- Department of Chemistry,
Chemistry Research Laboratory, University of Oxford, Mansfield
Road, Oxford OX1 3TA, United Kingdom
| | - James E. Thomson
- Department of Chemistry,
Chemistry Research Laboratory, University of Oxford, Mansfield
Road, Oxford OX1 3TA, United Kingdom
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Brennan MB, Davies SG, Fletcher AM, Lee JA, Roberts PM, Russell AJ, Thomson JE. Epoxidation of trans-4-Aminocyclohex-2-en-1-ol Derivatives: Competition of Hydroxy-Directed and Ammonium-Directed Pathways. Aust J Chem 2015. [DOI: 10.1071/ch14531] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
N-Substituted trans-4-aminocyclohex-2-en-1-ols undergo epoxidation upon treatment with Cl3CCO2H followed by meta-chloroperbenzoic acid (m-CPBA) via competitive pathways resulting from hydrogen-bonding delivery by both the hydroxy group and the in situ formed ammonium ion. The absence of epoxide ring-opening in these reactions renders these substrates a unique platform for analysing the effect of the two competing directing groups on the rate of the epoxidation reaction: the diastereoisomeric ratio of the epoxide products is also the ratio of the rate constants describing the competing epoxidation processes (the group with the higher directing ability dominating the stereochemical course of the reaction). Analysis of the diastereoisomeric epoxide mixtures obtained from these reactions allowed the following order of directing group ability to be defined: NHBn >> NMeBn > OH > NBn2. The large difference in rate between the secondary and tertiary amino groups is consistent with superior directing ability of the former due to the presence of two hydrogen-bond donor sites on the secondary ammonium ion and/or an increased conformational flexibility to adopt an optimum geometry. The rate of an ammonium-directed epoxidation proceeds ~10 times slower in the presence of an allylic hydroxy group than in its absence, consistent with the presence of the additional, inductively electron-withdrawing heteroatom abating the nucleophilicity of the olefin. The relative rate of the hydroxy-directed epoxidation process in the presence of a more sterically demanding ammonium substituent is greater than that in the presence of a less sterically demanding one: this effect is attributed to an increased bias for the half-chair conformer in which the bulky ammonium substituent and, hence, the hydroxy group occupy pseudo-equatorial sites, thus allowing the latter to direct the reaction more efficiently.
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Csatayová K, Davies SG, Fletcher AM, Ford JG, Klauber DJ, Roberts PM, Thomson JE. Asymmetric syntheses of (-)-3-epi-Fagomine, (2R,3S,4R)-dihydroxypipecolic acid, and several polyhydroxylated homopipecolic acids. J Org Chem 2014; 79:10932-44. [PMID: 25337869 DOI: 10.1021/jo501952t] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A range of enantiopure polyhydroxylated piperidines, including (2R,3S,4R)-dihydroxypipecolic acid, (-)-3-epi-fagomine, (2S,3S,4R)-dihydroxyhomopipecolic acid, (2S,3R,4R)-dihydroxyhomopipecolic acid, and two trihydroxy-substituted homopipecolic acids, have been prepared using diastereoselective olefinic oxidations of a range of enantiopure tetrahydropyridines as the key step. The requisite substrates were readily prepared from tert-butyl sorbate using our diastereoselective hydroamination or aminohydroxylation protocols followed by ring-closing metathesis. After diastereoselective olefinic oxidation of the resultant enantiopure tetrahydropyridines and deprotection, enantiopure polyhydroxylated piperidines were isolated as single diastereoisomers (>99:1 dr) in good overall yield.
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Affiliation(s)
- Kristína Csatayová
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford , Mansfield Road, Oxford OX1 3TA, U.K
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Jeon J, Shin N, Kim YG. Stereocontrolled Dihydroxylation Reactions of Acyclic Allylic Amines. APPLIED CHEMISTRY FOR ENGINEERING 2014. [DOI: 10.14478/ace.2014.1113] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Davies SG, Fletcher AM, Foster EM, Houlsby ITT, Roberts PM, Schofield TM, Thomson JE. The asymmetric syntheses of pyrrolizidines, indolizidines and quinolizidines via two sequential tandem ring-closure/N-debenzylation processes. Org Biomol Chem 2014; 12:9223-35. [DOI: 10.1039/c4ob01737d] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Brambilla M, Davies SG, Fletcher AM, Hao L, Lv L, Roberts PM, Thomson JE. Asymmetric syntheses of methyl N-Boc-2-deoxy-2-amino-l-erythroside, methyl N-Boc-2-deoxy-2-amino-d-threoside and methyl N-Boc-2,3-dideoxy-3-amino-l-arabinopyranoside. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.03.055] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Davies SG, Foster EM, Lee JA, Roberts PM, Thomson JE. Doubly diastereoselective conjugate additions of the antipodes of lithium N-benzyl-N-(α-methylbenzyl)amide to enantiopure ε-O-protected α,β-unsaturated esters derived from d-ribose. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.tetasy.2014.02.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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