1
|
Sang D, Yue H, Zhao Z, Yang P, Tian J. Anchimerically Assisted Selective Cleavage of Acid-Labile Aryl Alkyl Ethers by Aluminum Triiodide and N, N-Dimethylformamide Dimethyl Acetal. J Org Chem 2020; 85:6429-6440. [PMID: 32319290 DOI: 10.1021/acs.joc.0c00290] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Aluminum triiodide is harnessed by N,N-dimethylformamide dimethyl acetal (DMF-DMA) for the selective cleavage of ethers via neighboring group participation. Various acid-labile functional groups, including carboxylate, allyl, tert-butyldimethylsilyl (TBS), and tert-butoxycarbonyl (Boc), suffer the conditions intact. The method offers an efficient approach to cleaving catechol monoalkyl ethers and to uncovering phenols from acetal-type protecting groups such as methoxymethyl (MOM), methoxyethoxymethyl (MEM), and tetrahydropyranyl (THP) chemoselectively.
Collapse
Affiliation(s)
- Dayong Sang
- College of Chemical Engineering and Pharmacy, Jingchu University of Technology, Jingmen, Hubei 448000, P. R. China
| | - Huaxin Yue
- College of Chemical Engineering and Pharmacy, Jingchu University of Technology, Jingmen, Hubei 448000, P. R. China.,School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan, Hubei 430205, P. R. China
| | - Zhengdong Zhao
- College of Chemical Engineering and Pharmacy, Jingchu University of Technology, Jingmen, Hubei 448000, P. R. China
| | - Pengtao Yang
- College of Chemical Engineering and Pharmacy, Jingchu University of Technology, Jingmen, Hubei 448000, P. R. China
| | - Juan Tian
- College of Chemical Engineering and Pharmacy, Jingchu University of Technology, Jingmen, Hubei 448000, P. R. China
| |
Collapse
|
2
|
Li J, Tan H, An Y, Shao Z, Zhao S. Synthesis and DABCO‐induced demethylation of 3‐cyano‐4‐methoxy‐2‐pyridone derivatives. J Heterocycl Chem 2020. [DOI: 10.1002/jhet.3783] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Jing Li
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University No.2999 North Renmin Road Shanghai 201620 People's Republic of China
| | - Hong‐Ru Tan
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University No.2999 North Renmin Road Shanghai 201620 People's Republic of China
| | - Yu‐Long An
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University No.2999 North Renmin Road Shanghai 201620 People's Republic of China
| | - Zhi‐Yu Shao
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University No.2999 North Renmin Road Shanghai 201620 People's Republic of China
| | - Sheng‐Yin Zhao
- College of Chemistry, Chemical Engineering and Biotechnology, Donghua University No.2999 North Renmin Road Shanghai 201620 People's Republic of China
| |
Collapse
|
3
|
DFT study on the reaction mechanism and regioselectivity for the [1,2]-anionic rearrangement of 2-benzyloxypyridine derivatives. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.06.018] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
4
|
Kutsumura N, Nagase H. Unique Reactions of Morphinan Skeletons and Conversions of the Skeletons to Active Alkaloids. J SYN ORG CHEM JPN 2018. [DOI: 10.5059/yukigoseikyokaishi.76.914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Hiroshi Nagase
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba
| |
Collapse
|
5
|
Liu L, Li Z, Chen C, Li H, Xu L, Yu Z. Efficient dealkylation of aryl alkyl ethers catalyzed by Cu 2 O. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.03.070] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
6
|
Ho Kenny Park K, Chen R, Chen DYK. Programmed serial stereochemical relay and its application in the synthesis of morphinans. Chem Sci 2017; 8:7031-7037. [PMID: 29147530 PMCID: PMC5642196 DOI: 10.1039/c7sc03189k] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Accepted: 08/15/2017] [Indexed: 11/21/2022] Open
Abstract
Herein we report a rationally designed, serial point-to-axial and axial-to-point stereoinduction and its integration into multi-step and target-oriented organic synthesis. In this proof-of-concept study, the configurational stability of several carefully designed atropisomeric intermediates and the fidelity of their unconventional stereoinductions were systematically investigated. The highly functionalized prepared synthetic intermediate was further applied in a novel chemical method to access the morphinans and it is potentially applicable to other structurally related alkaloids.
Collapse
Affiliation(s)
- Kun Ho Kenny Park
- Department of Chemistry , Seoul National University , Gwanak-1 Gwanak-ro, Gwanak-gu , Seoul 151-742 , South Korea .
| | - Rui Chen
- Department of Chemistry , Seoul National University , Gwanak-1 Gwanak-ro, Gwanak-gu , Seoul 151-742 , South Korea .
| | - David Y-K Chen
- Department of Chemistry , Seoul National University , Gwanak-1 Gwanak-ro, Gwanak-gu , Seoul 151-742 , South Korea .
| |
Collapse
|
7
|
Yamamoto N, Okada T, Harada Y, Kutsumura N, Imaide S, Saitoh T, Fujii H, Nagase H. The application of a specific morphinan template to the synthesis of galanthamine. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.08.014] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
8
|
Fakhouri L, El-Elimat T, Hurst DP, Reggio PH, Pearce CJ, Oberlies NH, Croatt MP. Isolation, semisynthesis, covalent docking and transforming growth factor beta-activated kinase 1 (TAK1)-inhibitory activities of (5Z)-7-oxozeaenol analogues. Bioorg Med Chem 2015; 23:6993-9. [PMID: 26481152 DOI: 10.1016/j.bmc.2015.09.037] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2015] [Revised: 09/14/2015] [Accepted: 09/22/2015] [Indexed: 12/22/2022]
Abstract
(5Z)-7-Oxozeanol and related analogues were isolated and screened to explore their activity as TAK1 inhibitors. Seven analogues were synthesized and more than a score of natural products isolated that examined the role that different areas of the molecule contribute to TAK1 inhibition. A novel nonaromatic difluoro-derivative was synthesized that had similar potency compared to the lead. This is the first example of a nonaromatic compound in this class to have TAK1 inhibition. Covalent docking for the isolated and synthesized analogues was carried out and found a strong correlation between the observed activities and the calculated binding.
Collapse
Affiliation(s)
- Lara Fakhouri
- Department of Chemistry and Biochemistry, Natural Products and Drug Discovery Center, University of North Carolina at Greensboro, Greensboro, NC 27402, USA
| | - Tamam El-Elimat
- Department of Chemistry and Biochemistry, Natural Products and Drug Discovery Center, University of North Carolina at Greensboro, Greensboro, NC 27402, USA
| | - Dow P Hurst
- Department of Chemistry and Biochemistry, Natural Products and Drug Discovery Center, University of North Carolina at Greensboro, Greensboro, NC 27402, USA
| | - Patricia H Reggio
- Department of Chemistry and Biochemistry, Natural Products and Drug Discovery Center, University of North Carolina at Greensboro, Greensboro, NC 27402, USA
| | - Cedric J Pearce
- Mycosynthetix, Inc., 505 Meadowlands Drive, Suite 103, Hillsborough, USA
| | - Nicholas H Oberlies
- Department of Chemistry and Biochemistry, Natural Products and Drug Discovery Center, University of North Carolina at Greensboro, Greensboro, NC 27402, USA
| | - Mitchell P Croatt
- Department of Chemistry and Biochemistry, Natural Products and Drug Discovery Center, University of North Carolina at Greensboro, Greensboro, NC 27402, USA
| |
Collapse
|
9
|
Selfridge BR, Wang X, Zhang Y, Yin H, Grace PM, Watkins LR, Jacobson AE, Rice KC. Structure-Activity Relationships of (+)-Naltrexone-Inspired Toll-like Receptor 4 (TLR4) Antagonists. J Med Chem 2015; 58:5038-52. [PMID: 26010811 DOI: 10.1021/acs.jmedchem.5b00426] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Activation of Toll-like receptors has been linked to neuropathic pain and opioid dependence. (+)-Naltrexone acts as a Toll-like receptor 4 (TLR4) antagonist and has been shown to reverse neuropathic pain in rat studies. We designed and synthesized compounds based on (+)-naltrexone and (+)-noroxymorphone and evaluated their TLR4 antagonist activities by their effects on inhibiting lipopolysaccharide (LPS) induced TLR4 downstream nitric oxide (NO) production in microglia BV-2 cells. Alteration of the N-substituent in (+)-noroxymorphone gave us a potent TLR4 antagonist. The most promising analog, (+)-N-phenethylnoroxymorphone ((4S,4aR,7aS,12bR)-4a,9-dihydroxy-3-phenethyl-2,3,4,4a,5,6-hexahydro-1H-4,12-methanobenzofuro[3,2-e]isoquinolin-7(7aH)-one, 1j) showed ∼75 times better TLR-4 antagonist activity than (+)-naltrexone, and the ratio of its cell viability IC50, a measure of its toxicity, to TLR-4 antagonist activity (140 μM/1.4 μM) was among the best of the new analogs. This compound (1j) was active in vivo; it significantly increased and prolonged morphine analgesia.
Collapse
Affiliation(s)
- Brandon R Selfridge
- †Drug Design and Synthesis Section, Molecular Targets and Medications Discovery Branch, Intramural Research Program, National Institute on Drug Abuse and the National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Department of Health and Human Services, 9800 Medical Center Drive, Bethesda, Maryland 20892-3373, United States
| | - Xiaohui Wang
- ‡Department of Psychology and Neuroscience, University of Colorado at Boulder, Boulder, Colorado 80309, United States.,§Department of Chemistry and Biochemistry the BioFrontiers Institute, University of Colorado at Boulder, Boulder, Colorado 80309, United States
| | - Yingning Zhang
- ‡Department of Psychology and Neuroscience, University of Colorado at Boulder, Boulder, Colorado 80309, United States
| | - Hang Yin
- §Department of Chemistry and Biochemistry the BioFrontiers Institute, University of Colorado at Boulder, Boulder, Colorado 80309, United States
| | - Peter M Grace
- ‡Department of Psychology and Neuroscience, University of Colorado at Boulder, Boulder, Colorado 80309, United States
| | - Linda R Watkins
- ‡Department of Psychology and Neuroscience, University of Colorado at Boulder, Boulder, Colorado 80309, United States
| | - Arthur E Jacobson
- †Drug Design and Synthesis Section, Molecular Targets and Medications Discovery Branch, Intramural Research Program, National Institute on Drug Abuse and the National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Department of Health and Human Services, 9800 Medical Center Drive, Bethesda, Maryland 20892-3373, United States
| | - Kenner C Rice
- †Drug Design and Synthesis Section, Molecular Targets and Medications Discovery Branch, Intramural Research Program, National Institute on Drug Abuse and the National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Department of Health and Human Services, 9800 Medical Center Drive, Bethesda, Maryland 20892-3373, United States
| |
Collapse
|
10
|
Konoura K, Fujii H, Imaide S, Gouda H, Hirayama S, Hirono S, Nagase H. Transformation of naltrexone into mesembrane and investigation of the binding properties of its intermediate derivatives to opioid receptors. Bioorg Med Chem 2015; 23:439-48. [DOI: 10.1016/j.bmc.2014.12.032] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Revised: 12/15/2014] [Accepted: 12/15/2014] [Indexed: 11/28/2022]
|
11
|
Murphy B, Šnajdr I, Machara A, Endoma-Arias MAA, Stamatatos TC, Cox DP, Hudlický T. Conversion of Thebaine to Oripavine and Other Useful Intermediates for the Semisynthesis of Opiate-Derived Agents: Synthesis of Hydromorphone. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400445] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
12
|
Baumgardt I, Butenschön H. 1,1′-Diaryl-Substituted Ferrocenes: Up to Three Hinges in Oligophenyleneethynylene-Type Molecular Wires. European J Org Chem 2010. [DOI: 10.1002/ejoc.200901252] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
13
|
Synthesis and dopamine receptor binding affinity of 4H-thiochromenoapomorphines. MONATSHEFTE FUR CHEMIE 2008. [DOI: 10.1007/s00706-008-0044-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
14
|
|
15
|
Smith TA, Thatcher LN, Coop A. 3-Hydroxy-4-methoxyindolomorphinans as delta opioid selective ligands. Bioorg Med Chem Lett 2007; 17:5175-6. [PMID: 17659872 PMCID: PMC2030991 DOI: 10.1016/j.bmcl.2007.06.087] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2007] [Revised: 06/26/2007] [Accepted: 06/28/2007] [Indexed: 10/23/2022]
Abstract
Previous studies showed that 4-hydroxy-3-methoxyindolomorphinans had variable delta opioid affinity and selectivity. Herein, we show that the 3,4-dimethoxy analogs possessed similar low affinity, whereas the 3-hydroxy-4-methoxy analogs showed excellent delta opioid affinity and selectivity comparable with the parent indolomorphinans.
Collapse
Affiliation(s)
- Trudy A Smith
- Department of Pharmaceutical Sciences, University of Maryland School of Pharmacy, 20 Penn Street, Baltimore, MD 21201, USA
| | | | | |
Collapse
|
16
|
Iwao M, Fukuda T. Synthesis of Both Enantiomers of Protoberberines via Laterally Lithiated (S)-4-Isopropyl-2-(o-tolyl)oxazolines. HETEROCYCLES 2007. [DOI: 10.3987/com-07-s(w)56] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|