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Sato Y, Oyobe N, Ogawa T, Suzuki S, Aoyama H, Nakamura T, Fujioka H, Shuto S, Arisawa M. Design, Synthesis, and Monoamine Oxidase Inhibitory Activity of (+)-Cinchonaminone and Its Simplified Derivatives. ACS Med Chem Lett 2021; 12:1464-1469. [PMID: 34531955 DOI: 10.1021/acsmedchemlett.1c00310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Accepted: 08/13/2021] [Indexed: 11/29/2022] Open
Abstract
The absolute structure of an indole alkaloid (+)-cinchonaminone by total synthesis of both (+)-cinchonaminone and its enantiomer was determined. The main focus of the study was the enantioselective synthesis of both enantiomers of a chiral cis-3,4-disubstituted piperidine. We also evaluated monoamine oxidase (MAO) inhibitory activities of these enantiomers. Furthermore, its structurally simplified derivatives were synthesized that did not have any chiral center. Two of these derivatives showed stronger MAO inhibitory activities than that of (+)-cinchonaminone.
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Affiliation(s)
- Yuta Sato
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Naoko Oyobe
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Takao Ogawa
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita 12, Nishi 6, Kita-ku, Sapporo 060-0808, Japan
| | - Sayo Suzuki
- Graduate School of Pharmaceutical Sciences, Keio University, Shibakoen 1-5-30, Minato-ku, Tokyo 105-8512, Japan
| | - Hiroshi Aoyama
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Tomonori Nakamura
- Graduate School of Pharmaceutical Sciences, Keio University, Shibakoen 1-5-30, Minato-ku, Tokyo 105-8512, Japan
| | - Hiromichi Fujioka
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Satoshi Shuto
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita 12, Nishi 6, Kita-ku, Sapporo 060-0808, Japan
| | - Mitsuhiro Arisawa
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka 565-0871, Japan
- Faculty of Pharmaceutical Sciences, Hokkaido University, Kita 12, Nishi 6, Kita-ku, Sapporo 060-0808, Japan
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Wei Y, Peng AY, Huang J. Inhibition of porcine liver carboxylesterase by phosphorylated flavonoids. Chem Biol Interact 2013; 204:75-9. [PMID: 23643881 DOI: 10.1016/j.cbi.2013.04.010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2013] [Revised: 04/09/2013] [Accepted: 04/22/2013] [Indexed: 11/19/2022]
Abstract
We have recently synthesized a series of phosphorylated flavonoids and identified some of them as potent inhibitors of pancreatic cholesterol esterase (CEase) with excellent selectivity for CEase over acetylcholinesterase (AChE). In the present paper, we investigated the inhibitory activities of these compounds against porcine liver carboxylesterase (CE) since carboxylesterases (CEs) are another family of serine esterases responsible for the metabolism and detoxification of many ester-containing xenobiotics and clinical esterified drugs, and there exists much structural similarity between CEase and CEs. The results indicated that phosphorylated flavonoids exhibited significantly improved inhibition potency toward CE than their parent compounds, and six of them had IC50 values less than 5.0nM. Among all compounds tested, compounds 3d and 3e are the two most potent inhibitors of CE, giving IC50 values of 1.79nM and 1.58nM, respectively. Interestingly, these compounds inhibited CEase and CE with similar structure activity correlations, and those with high inhibitory activities toward CEase could also inhibit CE efficiently. The presences of a free hydroxyl group at position 5 and a phosphate group at position 7 of the phosphorylated flavonoids are favorable to the inhibition of CE. The inhibition mechanism and kinetic characterization studies of the most potent inhibitors revealed that they are irreversible competitive inhibitors.
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Affiliation(s)
- Yingling Wei
- School of Chemistry & Chemical Engineering, Sun Yat-sen University, 135 Xingangxi Lu, Guangzhou 510275, China
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Wei Y, Peng AY, Wang B, Ma L, Peng G, Du Y, Tang J. Synthesis and biological evaluation of phosphorylated flavonoids as potent and selective inhibitors of cholesterol esterase. Eur J Med Chem 2013; 74:751-8. [PMID: 23601990 DOI: 10.1016/j.ejmech.2013.03.025] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2012] [Revised: 03/09/2013] [Accepted: 03/13/2013] [Indexed: 12/01/2022]
Abstract
A series of phosphorylated flavonoids were synthesized and investigated in vitro as inhibitors of pancreatic cholesterol esterase (CEase) and acetylcholinesterase (AChE). The results showed that most of the synthesized compounds exhibited nanomolar potency against CEase, much better than the parent flavonoids. Furthermore, these phosphorylated flavonoids demonstrated good to high selectivity for CEase over AChE, which only showed micromolar potency inhibition of AChE. The most selective and potent inhibitor of CEase (3e) had IC₅₀ value of 0.72 nM and 11800-fold selectivity for CEase over AChE. The structure-activity relationships revealed that the free hydroxyl group at position 5 and phosphate group at position 7 of the phosphorylated flavonoids are favorable to the inhibition of CEase. The inhibition mechanism and kinetic characterization studies indicated that they are irreversible competitive inhibitors of CEase.
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Affiliation(s)
- Yingling Wei
- School of Chemistry & Chemical Engineering, Sun Yat-sen University, 135 Xingangxi Lu, Guangzhou 510275, China
| | - Ai-Yun Peng
- School of Chemistry & Chemical Engineering, Sun Yat-sen University, 135 Xingangxi Lu, Guangzhou 510275, China.
| | - Bo Wang
- School of Chemistry & Chemical Engineering, Sun Yat-sen University, 135 Xingangxi Lu, Guangzhou 510275, China
| | - Lin Ma
- School of Chemistry & Chemical Engineering, Sun Yat-sen University, 135 Xingangxi Lu, Guangzhou 510275, China
| | - Guoping Peng
- College of Bioscience and Biotechnology, Hunan Agricultural University, Furong District, Changsha 410428, China
| | - Yidan Du
- School of Chemistry & Chemical Engineering, Sun Yat-sen University, 135 Xingangxi Lu, Guangzhou 510275, China
| | - Jingming Tang
- School of Chemistry & Chemical Engineering, Sun Yat-sen University, 135 Xingangxi Lu, Guangzhou 510275, China
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Wächter M, Rüedi P. Synthesis and Characterization of Enantiomerically Pure cis- and trans-3-Fluoro-2,4-dioxa-7-aza-3-phosphadecalin 3-Oxides as Acetylcholine Mimetics and Inhibitors of Acetylcholinesterase. Helv Chim Acta 2012. [DOI: 10.1002/hlca.201100507] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Clerc C, Rüedi P. Synthesis and Characterization of Enantiomerically Pure cis- and trans-3-Fluoro-2,4-dioxa-8-aza-3-phosphadecalin 3-Oxides as γ-Homoacetylcholine Mimetics and Inhibitors of Acetylcholinesterase. Helv Chim Acta 2012. [DOI: 10.1002/hlca.201100369] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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