1
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Park S, Myeong IS, Ham WH. Recent advances in the total synthesis of polyhydroxylated alkaloids via chiral oxazines. Org Biomol Chem 2024; 22:894-926. [PMID: 38230703 DOI: 10.1039/d3ob01624b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2024]
Abstract
This review summarizes recently established methodologies developed for the enantioselective and diastereoselective synthesis of chiral 1,3-oxazines. These compounds are of interest as advanced synthetic intermediates in the total synthesis of structurally complex and biologically active polyhydroxylated alkaloids such as (+)-1-deoxynojirimycin, (-)-anisomycin, (+)-castanospermine, (+)-casuarine, (-)-conduramine F-1, (-)-sphingofungin B, Neu5Ac methyl ester, and other natural products. The devised synthetic approach aims to offer a direct, efficient, and adaptable method for obtaining both pure enantiomers and pure diastereomers. It revolves around utilizing chiral building blocks like syn,syn-, syn,syn,anti-, syn,anti-, syn,anti,syn-, anti,syn-, anti,syn,syn-, and anti,syn,anti-oxazines. By integrating oxazine chemistry with established and innovative transformations, this approach enabled the synthesis of 30 polyhydroxylated amines across various studies conducted between 2007 and 2022.
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Affiliation(s)
- Seokhwi Park
- YS Life Science Co., Ltd, 207, Sujeong-ro, Jangan-myeon, Hwaseong-si, Gyeonggi-do, 18581, Republic of Korea.
| | - In-Soo Myeong
- College of Pharmacy, Daegu Catholic University, 13-13, Hayang-ro, Hayang-eup, Gyeongsan-si, Gyeongsangbuk-do, 38430, Republic of Korea.
| | - Won-Hun Ham
- YS Life Science Co., Ltd, 207, Sujeong-ro, Jangan-myeon, Hwaseong-si, Gyeonggi-do, 18581, Republic of Korea.
- School of Pharmacy, Sungkyunkwan University, 2066, Seobu-ro, Suwon-si, Gyeonggi-do, 16419, Republic of Korea
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2
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Miao Q, Dekkers R, Gupta KBSS, Overhand M, Dasgupta R, Ubbink M. Rigidified and Hydrophilic DOTA-like Lanthanoid Ligands: Design, Synthesis, and Dynamic Properties. Inorg Chem 2023; 62:3776-3787. [PMID: 36802549 PMCID: PMC9996828 DOI: 10.1021/acs.inorgchem.2c03768] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
Limiting the dynamics of paramagnetic tags is crucial for the accuracy of the structural information derived from paramagnetic nuclear magnetic resonance (NMR) experiments. A hydrophilic rigid 2,2',2″,2‴-(1,4,7,10-tetraazacyclododecane-1,4,7,10-tetrayl)tetraacetic acid (DOTA)-like lanthanoid complex was designed and synthesized following a strategy that allows the incorporation of two sets of two adjacent substituents. This resulted in a C2 symmetric hydrophilic and rigid macrocyclic ring, featuring four chiral hydroxyl-methylene substituents. NMR spectroscopy was used to investigate the conformational dynamics of the novel macrocycle upon complexation with europium and compared to DOTA and its derivatives. The twisted square antiprismatic and square antiprismatic conformers coexist, but the former is favored, which is different from DOTA. Two-dimensional 1H exchange spectroscopy shows that ring flipping of the cyclen-ring is suppressed due to the presence of the four chiral equatorial hydroxyl-methylene substituents at proximate positions. The reorientation of the pendant arms causes conformational exchange between two conformers. The reorientation of the coordination arms is slower when the ring flipping is suppressed. This indicates that these complexes are suitable scaffolds to develop rigid probes for paramagnetic NMR of proteins. Due to their hydrophilic nature, it is anticipated that they are less likely to cause protein precipitation than their more hydrophobic counterparts.
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Affiliation(s)
- Qing Miao
- Leiden Institute of Chemistry, Gorlaeus Laboratories, Leiden University, Einsteinweg 55, Leiden 2333 CC, The Netherlands.,College of Chemistry and Chemical Engineering, Key Laboratory of Chemical Additives for China National Light Industry, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - René Dekkers
- Leiden Institute of Chemistry, Gorlaeus Laboratories, Leiden University, Einsteinweg 55, Leiden 2333 CC, The Netherlands
| | - Karthick Babu Sai Sankar Gupta
- Leiden Institute of Chemistry, Gorlaeus Laboratories, Leiden University, Einsteinweg 55, Leiden 2333 CC, The Netherlands
| | - Mark Overhand
- Leiden Institute of Chemistry, Gorlaeus Laboratories, Leiden University, Einsteinweg 55, Leiden 2333 CC, The Netherlands
| | - Rubin Dasgupta
- Leiden Institute of Chemistry, Gorlaeus Laboratories, Leiden University, Einsteinweg 55, Leiden 2333 CC, The Netherlands.,Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Solnavägen 9, Stockholm 17177, Sweden
| | - Marcellus Ubbink
- Leiden Institute of Chemistry, Gorlaeus Laboratories, Leiden University, Einsteinweg 55, Leiden 2333 CC, The Netherlands
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3
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Affiliation(s)
- Shaomin Fu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University 29 Wangjiang Rd Chengdu Sichuan 610064 China
| | - Bo Liu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University 29 Wangjiang Rd Chengdu Sichuan 610064 China
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4
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Narayana C, Khanna A, Kumari P, Sagar R. Total Syntheses of Kirkamide and
N
‐acetyl
ent
‐Conduramine B‐1. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Chintam Narayana
- Department of Chemistry Institute of Science Banaras Hindu University Varanasi Uttar Pradesh 221005 India
| | - Ashish Khanna
- Department of Chemistry Institute of Science Banaras Hindu University Varanasi Uttar Pradesh 221005 India
| | - Priti Kumari
- Department of Chemistry Institute of Science Banaras Hindu University Varanasi Uttar Pradesh 221005 India
| | - Ram Sagar
- Department of Chemistry Institute of Science Banaras Hindu University Varanasi Uttar Pradesh 221005 India
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5
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Tjeng AA, Handore KL, Batey RA. Stereocontrolled Microwave-Assisted Domino [3,3]-Sigmatropic Reactions: A Winstein-Overman Rearrangement for the Formation of Differentiated Contiguous C-N Bonds. Org Lett 2020; 22:3050-3055. [PMID: 32223252 DOI: 10.1021/acs.orglett.0c00801] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A domino [3,3]-sigmatropic rearrangement sequence employing a sequential reversible allylic azide rearrangement followed by an irreversible Overman reaction provides a new route to the formation of two contiguous C-N bonds. The reaction occurs in a stereocontrolled fashion in two steps from readily available alkenyl epoxides via initial azide anion ring opening of the epoxides.
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Affiliation(s)
- Andy A Tjeng
- Davenport Research Laboratories, Dept. of Chemistry, University of Toronto, 80 St. George St., Toronto, ON, M5S 3H6, Canada
| | - Kishor L Handore
- Davenport Research Laboratories, Dept. of Chemistry, University of Toronto, 80 St. George St., Toronto, ON, M5S 3H6, Canada
| | - Robert A Batey
- Davenport Research Laboratories, Dept. of Chemistry, University of Toronto, 80 St. George St., Toronto, ON, M5S 3H6, Canada
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7
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Lo HJ, Chang YK, Ananthan B, Lih YH, Liu KS, Yan TH. Total Synthesis of (+)-Lycoricidine and Conduramine B-1, ent-C-1, C-4, D-1, ent-F-1, and ent-F-4, and Formal Synthesis of (-)-Laminitol: a C2-Symmetric Chiral-Pool-Based Flexible Strategy. J Org Chem 2019; 84:10065-10075. [PMID: 31331167 DOI: 10.1021/acs.joc.9b01221] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A facile and diversity-oriented synthetic strategy toward aminocyclitol natural products from inexpensive C2-symmetric l-tartaric acid was developed. The pivotal epoxide was used as a common intermediate to accomplish eight diverse target molecules in six to eleven steps. Various allyl-amine-type conduramines were synthesized in a diastereoselective manner. Heck arylation was explored to construct a phenanthridone ring in a concise synthesis of (+)-lycoricidine. In addition, a highly efficient formal synthesis of (-)-laminitol was developed.
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Affiliation(s)
- Hong-Jay Lo
- Department of Chemistry , National Chung Hsing University , Taichung 402 , Taiwan
| | - Yuan-Kang Chang
- Department of Chemistry , National Chung Hsing University , Taichung 402 , Taiwan
| | | | - Yu-Hsuan Lih
- Department of Chemistry , National Chung Hsing University , Taichung 402 , Taiwan
| | - Kuang-Shun Liu
- Department of Chemistry , National Chung Hsing University , Taichung 402 , Taiwan
| | - Tu-Hsin Yan
- Department of Chemistry , National Chung Hsing University , Taichung 402 , Taiwan
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8
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Harit VK, Ramesh NG. Ring closing metathesis (RCM) approach to the synthesis of conduramine B-2, ent-conduramine F-2, aminocyclopentitol and trihydroxyazepane. Org Biomol Chem 2019; 17:5951-5961. [PMID: 31166343 DOI: 10.1039/c9ob01010f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The syntheses of conduramine B-2, ent-conduramine F-2, aminocyclopentitol and trihydroxyazepane were accomplished from a common precursor, through a divergent approach using ring closing metathesis (RCM) as the key step. Tri-O-benzyl-d-glucal was converted to 3,4,6-tri-O-benzyl-1,2-dideoxy-2-iodo-1-p-toluenesulfonamido-α-d-mannose. Exposure to NaBH4 in MeOH resulted in a facile 1,2-transposition of the -NHTs group with concomitant glycosylation to give methyl 3,4,6-tri-O-benzyl-2-deoxy-2-p-toluenesulfonamido-β-d-glucoside, which was converted into methyl 6-deoxy-6-iodo-glucoside in three steps. Zinc-mediated Vasella's rearrangement proceeded smoothly to give the pluripotent formyl-olefin, possessing both electrophilic and nucleophilic sites, which was used as a common precursor in our diversity-oriented approach. Vinylation of the carbonyl group followed by RCM and subsequent deprotection resulted in the successful synthesis of conduramine B-2 and ent-conduramine F-2 for the first time. On the other hand, the Wittig reaction of the formyl-olefin affords the diene that undergoes Grubbs' I catalyzed RCM and deprotection/reduction to provide 3-amino-cyclopentan-1,2-diol. Utilizing the nucleophilic site at the nitrogen of the common precursor, base mediated N-allylation was carried out to obtain the corresponding diene that underwent a smooth RCM to afford trihydroxyazepane.
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Affiliation(s)
- Vimal Kant Harit
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi - 110016, India.
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9
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10
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Ananthan B, Yan TH. Practical preparation of methyl vinyl ethers through the direct coupling of ketones with CHCl2OMe promoted by Mg/TiCl4/THF. SYNTHETIC COMMUN 2018. [DOI: 10.1080/00397911.2017.1416635] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
| | - Tu-Hsin Yan
- Department of Chemistry, National Chung Hsing University, Taichung, Taiwan, ROC
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11
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Li F, Ding W, Quan N, Wu J, He Y, Zhu X, Shi X, Zhao J. Improved Stereoselective Syntheses of (+)-Valiolamine and (+)-Valienamine Starting from (-)-Shikimic Acid. CHINESE J CHEM 2017. [DOI: 10.1002/cjoc.201600935] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Fenglei Li
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy; East China University of Science and Technology; Shanghai 200237 China
| | - Wei Ding
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy; East China University of Science and Technology; Shanghai 200237 China
| | - Na Quan
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy; East China University of Science and Technology; Shanghai 200237 China
| | - Jiajia Wu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy; East China University of Science and Technology; Shanghai 200237 China
| | - Yungang He
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy; East China University of Science and Technology; Shanghai 200237 China
| | - Xingliang Zhu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy; East China University of Science and Technology; Shanghai 200237 China
| | - Xiaoxin Shi
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy; East China University of Science and Technology; Shanghai 200237 China
| | - Jianhong Zhao
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy; East China University of Science and Technology; Shanghai 200237 China
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12
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Myeong IS, Kim JS, Lee YT, Kang JC, Park SH, Jung C, Ham WH. Asymmetric total synthesis of (−)-conduramine A-1 via a chiral syn , anti -oxazine. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.tetasy.2016.06.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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13
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14
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Vale JR, Siopa F, Branco PS, Afonso CAM. Ring Opening of 6-Azabicyclo[3.1.0]hex-3-en-2-ols in Water under Mild Conditions. European J Org Chem 2016. [DOI: 10.1002/ejoc.201501468] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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15
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Stereoselective synthesis of (+)-valienamine starting from the naturally abundant (−)-shikimic acid. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.tetasy.2015.07.013] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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16
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17
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Thevenet N, de la Sovera V, Vila MA, Veiga N, Gonzalez D, Seoane G, Carrera I. Double [3,3]-Sigmatropic Rearrangement in the Enzymatic Dioxygenation of Benzyl Azide: Preparation of Novel Synthetically Valuable Azido-diols. Org Lett 2015; 17:684-7. [DOI: 10.1021/ol503708v] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Natalia Thevenet
- Departamento de Química
Orgánica and ‡Departamento Estrella Campos, Facultad de Química - Universidad de la República, General Flores 2124, CP 11800, Montevideo, Uruguay
| | - Victoria de la Sovera
- Departamento de Química
Orgánica and ‡Departamento Estrella Campos, Facultad de Química - Universidad de la República, General Flores 2124, CP 11800, Montevideo, Uruguay
| | - María Agustina Vila
- Departamento de Química
Orgánica and ‡Departamento Estrella Campos, Facultad de Química - Universidad de la República, General Flores 2124, CP 11800, Montevideo, Uruguay
| | - Nicolás Veiga
- Departamento de Química
Orgánica and ‡Departamento Estrella Campos, Facultad de Química - Universidad de la República, General Flores 2124, CP 11800, Montevideo, Uruguay
| | - David Gonzalez
- Departamento de Química
Orgánica and ‡Departamento Estrella Campos, Facultad de Química - Universidad de la República, General Flores 2124, CP 11800, Montevideo, Uruguay
| | - Gustavo Seoane
- Departamento de Química
Orgánica and ‡Departamento Estrella Campos, Facultad de Química - Universidad de la República, General Flores 2124, CP 11800, Montevideo, Uruguay
| | - Ignacio Carrera
- Departamento de Química
Orgánica and ‡Departamento Estrella Campos, Facultad de Química - Universidad de la República, General Flores 2124, CP 11800, Montevideo, Uruguay
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18
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Ananthan B, Chang WC, Lin JS, Li PH, Yan TH. A C2-Symmetric Chiral Pool-Based Flexible Strategy: Synthesis of (+)- and (−)-Shikimic Acids, (+)- and (−)-4-epi-Shikimic Acids, and (+)- and (−)-Pinitol. J Org Chem 2014; 79:2898-905. [DOI: 10.1021/jo402764v] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Bakthavachalam Ananthan
- Department
of Chemistry, National Chung-Hsing University, Taichung 400, Taiwan, Republic of China
| | - Wan-Chun Chang
- Department
of Chemistry, National Chung-Hsing University, Taichung 400, Taiwan, Republic of China
| | - Jhe-Sain Lin
- Department
of Chemistry, National Chung-Hsing University, Taichung 400, Taiwan, Republic of China
| | - Pin-Hui Li
- Department
of Chemistry, National Chung-Hsing University, Taichung 400, Taiwan, Republic of China
| | - Tu-Hsin Yan
- Department
of Chemistry, National Chung-Hsing University, Taichung 400, Taiwan, Republic of China
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19
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Vekariya RH, Liu R, Aubé J. A concomitant allylic azide rearrangement/intramolecular azide-alkyne cycloaddition sequence. Org Lett 2014; 16:1844-7. [PMID: 24635056 PMCID: PMC3993870 DOI: 10.1021/ol500011f] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
![]()
An intramolecular Huisgen cycloaddition
of an interconverting set
of isomeric allylic azides with alkynes affords substituted triazoles
in high yield. The stereoisomeric vinyl-substituted triazoloxazines
formed depend on the rate of cycloaddition of the different allylic
azide precursors when the reaction is carried out under thermal conditions.
In contrast, dimerized macrocyclic products were obtained when the
reaction was done using copper(I)-catalyzed conditions, demonstrating
the ability to control the reaction products through changing conditions.
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Affiliation(s)
- Rakesh H Vekariya
- Department of Medicinal Chemistry, University of Kansas , Lawrence, Kansas 66045, United States
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20
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Wang X, Zhang J, Liu Y, Cui Y. Chiral Porous TADDOL-Embedded Organic Polymers for Asymmetric Diethylzinc Addition to Aldehydes. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2014. [DOI: 10.1246/bcsj.20130317] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Xiuren Wang
- School of Chemistry and Chemical Technology and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University
| | - Jie Zhang
- School of Chemistry and Chemical Technology and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University
| | - Yan Liu
- School of Chemistry and Chemical Technology and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University
| | - Yong Cui
- School of Chemistry and Chemical Technology and State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University
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21
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Li QR, Kim SI, Park SJ, Yang HR, Baek AR, Kim IS, Jung YH. Total synthesis of (+)-valienamine and (−)-1-epi-valienamine via a highly diastereoselective allylic amination of cyclic polybenzyl ether using chlorosulfonyl isocyanate. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.09.098] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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22
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Boyd DR, Sharma ND, Belhocine T, Malone JF, McGregor ST, Atchison J, McIntyre PAB, Stevenson PJ. Reactions of nitrogen nucleophiles with enantiopure cyclohexenyl electrophiles: a stereo- and regio- selective study. J PHYS ORG CHEM 2013. [DOI: 10.1002/poc.3183] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Derek R. Boyd
- School of Chemistry and Chemical Engineering; Queen's University; Belfast BT9 5AG UK
| | - Narain D. Sharma
- School of Chemistry and Chemical Engineering; Queen's University; Belfast BT9 5AG UK
| | - Tayeb Belhocine
- School of Chemistry and Chemical Engineering; Queen's University; Belfast BT9 5AG UK
| | - John F. Malone
- School of Chemistry and Chemical Engineering; Queen's University; Belfast BT9 5AG UK
| | - Stuart T. McGregor
- School of Chemistry and Chemical Engineering; Queen's University; Belfast BT9 5AG UK
| | - Jordan Atchison
- School of Chemistry and Chemical Engineering; Queen's University; Belfast BT9 5AG UK
| | - Peter A. B. McIntyre
- School of Chemistry and Chemical Engineering; Queen's University; Belfast BT9 5AG UK
| | - Paul J. Stevenson
- School of Chemistry and Chemical Engineering; Queen's University; Belfast BT9 5AG UK
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23
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Ji L, Zhang DF, Zhao Q, Hu SM, Qian C, Chen XZ. Diastereospecific epoxidation and highly regioselective ring-opening of (+)-valienamine: practical synthesis of (+)-valiolamine. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.06.046] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Ding C, Zhang Y, Chen H, Wild C, Wang T, White MA, Shen Q, Zhou J. Overcoming synthetic challenges of oridonin A-ring structural diversification: regio- and stereoselective installation of azides and 1,2,3-triazoles at the C-1, C-2, or C-3 position. Org Lett 2013; 15:3718-21. [PMID: 23834026 PMCID: PMC3779473 DOI: 10.1021/ol4015865] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Efficient and concise synthetic approaches have been developed for the rapid and diverse installation of azide functionalities at the C-1, C-2, or C-3 positions of oridonin (1) with highly controlled regio- and stereoselectivity, while keeping key reactive pharmacophores intact by utilizing unique preactivation strategies based on the common synthon 4. Further functionalization of these azides through click chemistry yielding triazole derivatives successfully provides access to an expanded natural scaffold-based compound library for potential anticancer agents.
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26
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Lo HJ, Chang YK, Yan TH. Chiral pool based efficient synthesis of the aminocyclitol core and furanoside of (-)-hygromycin A: formal total synthesis of (-)-hygromycin A. Org Lett 2012; 14:5896-9. [PMID: 23148861 DOI: 10.1021/ol3028237] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A chiral pool based synthetic strategy that leads from the readily available and inexpensive C(2)-symmetric tartaric acids to the chiral O-isopropylidenebenzooxazole--a convenient precursor to the aminocyclitol core of hygromycin A as well as the chiral γ-disilyloxybutyrolactone--a pivotal intermediate to approach to the furanoside of hygromycin A.
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Affiliation(s)
- Hong-Jay Lo
- Department of Chemistry, National Chung-Hsing University, Taichung 400, Taiwan, Republic of China
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27
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Ghosal P, Shaw AK. A chiron approach to aminocytitols by Petasis-Borono-Mannich reaction: formal synthesis of (+)-conduramine E and (-)-conduramine E. J Org Chem 2012; 77:7627-32. [PMID: 22900915 DOI: 10.1021/jo300804d] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A chiron approach to a stereoselective route for the synthesis of aminocytitols from carbohydrates is described. The formal synthesis of (+)-conduramine E and (-)-conduramine E was achieved by utilizing this strategy. The key features of the synthetic strategy include one-pot three-component Petasis-Borono-Mannich reaction to introduce the syn-β-amino alcohol functionality of conduramine E and ring-closing metathesis to construct its carbocyclic core. The present synthetic approach paves the way for stereoselective synthesis of several conduramines starting from carbohydrates.
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Affiliation(s)
- Partha Ghosal
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow 226 001, India
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Liu R, Gutierrez O, Tantillo DJ, Aubé J. Stereocontrol in a combined allylic azide rearrangement and intramolecular Schmidt reaction. J Am Chem Soc 2012; 134:6528-31. [PMID: 22490078 DOI: 10.1021/ja300369c] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Pre-equilibration of an interconverting set of isomeric allylic azides is coupled with an intramolecular Schmidt reaction to afford substituted lactams stereoselectively. The effect of substitution and a preliminary mechanistic study are reported. The synthetic potential of this method is demonstrated in the context of an enantioselective synthesis of an advanced intermediate leading toward pinnaic acid.
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Affiliation(s)
- Ruzhang Liu
- Department of Medicinal Chemistry, Delbert M. Shankel Structural Biology Center, University of Kansas, 2034 Becker Drive, Lawrence, Kansas 66045, USA
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29
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Lo HJ, Chen CY, Zheng WL, Yeh SM, Yan TH. A C2-Symmetric Pool Based Flexible Strategy: An Enantioconvergent Synthesis of (+)-Valiolamine and (+)-Valienamine. European J Org Chem 2012. [DOI: 10.1002/ejoc.201101845] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Norsikian S, Soulé JF, Cannillo A, Guillot R, Dau METH, Beau JM. Remarkable stereoselectivity in intramolecular Borono-Mannich reactions: synthesis of conduramines. Org Lett 2012; 14:544-7. [PMID: 22217115 DOI: 10.1021/ol203162s] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An unprecedented intramolecular Petasis condensation provides a novel approach to biologically important conduramines. The compounds are produced with an exclusive anti stereoselectivity for the newly created β-amino alcohol motif. The stereochemical outcome of the reaction is opposite to the one usually observed in the intermolecular reaction.
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Affiliation(s)
- Stéphanie Norsikian
- Centre de Recherche de Gif, Institut de Chimie des Substances Naturelles du CNRS, Avenue de la Terrasse, F-91198 Gif-sur-Yvette, France.
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31
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Yan TH, Lo HJ, Chang YK. A C2-Symmetric Pool Based Synthesis of the Furanoside of Hygromycin A. HETEROCYCLES 2012. [DOI: 10.3987/com-12-s(n)19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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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Haleema S, Sasi PV, Ibnusaud I, Polavarapu PL, Kagan HB. Enantiomerically pure compounds related to chiral hydroxy acids derived from renewable resources. RSC Adv 2012. [DOI: 10.1039/c2ra21205f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
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33
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Transformation of quercitols into 4-methylenecyclohex-5-ene-1,2,3-triol derivatives, precursors for the chemical chaperones N-octyl-4-epi-β-valienamine (NOEV) and N-octyl-β-valienamine (NOV). Bioorg Med Chem Lett 2011; 21:7189-92. [DOI: 10.1016/j.bmcl.2011.09.067] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2011] [Revised: 09/16/2011] [Accepted: 09/17/2011] [Indexed: 11/21/2022]
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34
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Chang CY. Efficient Synthesis of the C1-C9 Fragment of 7,8-O-Isopropylidene Protected Iriomoteolide 3a Derivative. J CHIN CHEM SOC-TAIP 2011. [DOI: 10.1002/jccs.201190054] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Rao MV, Chandrasekhar B, Rao BV, Swarnalatha JL. A new stereoselective approach to aminocyclohexitols using a Grignard addition on to an N-benzyl sugar imine and RCM. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.tetasy.2011.07.015] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Ahmad S, Thomas LH, Sutherland A. Stereoselective synthesis of polyhydroxylated aminocyclohexanes. Org Biomol Chem 2011; 9:2801-8. [DOI: 10.1039/c0ob00619j] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Herndon JW. The chemistry of the carbon–transition metal double and triple bond: Annual survey covering the year 2009. Coord Chem Rev 2011. [DOI: 10.1016/j.ccr.2010.07.003] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Wardrop DJ, Waidyarachchi SL. Synthesis and biological activity of naturally occurring α-glucosidase inhibitors. Nat Prod Rep 2010; 27:1431-68. [DOI: 10.1039/b914958a] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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