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Liang C, Hu C, Nie P, Liu Y, Liu J, Du Y. Bioinspired synthesis and biological evaluation of ent-protulactones A and B. Org Biomol Chem 2023; 22:175-183. [PMID: 38053497 DOI: 10.1039/d3ob01708g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
The bioinspired and stereoselective synthesis of the furo[3,2-b] furan lactone (-)-protulactone A and the dioxabicyclo[3.3.1]nonane lactone (+)-protulactone B has been achieved based on the chiron approach. The synthesis features the utilization of a number of one-pot, sequential transformations, including a cascade reaction of reductive elimination and nucleophilic addition in a one-pot process and a one-pot sequence via cross-metathesis/acetonide deprotection/O-Michael addition/lactonization to streamline the synthesis route and avoid the tedious work of product purification. Synthetic protulactones and their analogues were evaluated for their in vitro antiproliferative activity against selected tumor cell lines (MCF-7 and Capan 2) and showed minor cytotoxicity.
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Affiliation(s)
- Changxu Liang
- State Key Laboratory of Environmental Chemistry and Eco-toxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Chao Hu
- State Key Laboratory of Environmental Chemistry and Eco-toxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
| | - Pengpeng Nie
- State Key Laboratory of Environmental Chemistry and Eco-toxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yuanfang Liu
- State Key Laboratory of Environmental Chemistry and Eco-toxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Jun Liu
- State Key Laboratory of Environmental Chemistry and Eco-toxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
- Binzhou Institute of Technology, Weiqiao-UCAS Science and Technology Park, Binzhou 256606, Shandong Province, China
| | - Yuguo Du
- State Key Laboratory of Environmental Chemistry and Eco-toxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
- Binzhou Institute of Technology, Weiqiao-UCAS Science and Technology Park, Binzhou 256606, Shandong Province, China
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Leclere L, Fransolet M, Cambier P, El Bkassiny S, Tikad A, Dieu M, Vincent SP, Van Cutsem P, Michiels C. Identification of a cytotoxic molecule in heat-modified citrus pectin. Carbohydr Polym 2015; 137:39-51. [PMID: 26686103 DOI: 10.1016/j.carbpol.2015.10.055] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Revised: 10/13/2015] [Accepted: 10/14/2015] [Indexed: 01/07/2023]
Abstract
Modified forms of citrus pectin possess anticancer properties. However, their mechanism of action and the structural features involved remain unclear. Here, we showed that citrus pectin modified by heat treatment displayed cytotoxic effects in cancer cells. A fractionation approach was used aiming to identify active molecules. Dialysis and ethanol precipitation followed by HPLC analysis evidenced that most of the activity was related to molecules with molecular weight corresponding to low degree of polymerization oligogalacturonic acid. Heat-treatment of galacturonic acid also generated cytotoxic molecules. Furthermore, heat-modified galacturonic acid and heat-fragmented pectin contained the same molecule that induced cell death when isolated by HPLC separation. Mass spectrometry analyses revealed that 4,5-dihydroxy-2-cyclopenten-1-one was one cytotoxic molecule present in heat-treated pectin. Finally, we synthesized the enantiopure (4R,5R)-4,5-dihydroxy-2-cyclopenten-1-one and demonstrated that this molecule was cytotoxic and induced a similar pattern of apoptotic-like features than heat-modified pectin.
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Affiliation(s)
- Lionel Leclere
- Laboratory of Biochemistry and Cellular Biology-URBC, NARILIS, University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium.
| | - Maude Fransolet
- Laboratory of Biochemistry and Cellular Biology-URBC, NARILIS, University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium.
| | - Pierre Cambier
- Laboratory of Plant Cellular Biology-URBV, University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium.
| | - Sandy El Bkassiny
- Organic Chemistry Research Unit (UCO), University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium.
| | - Abdellatif Tikad
- Organic Chemistry Research Unit (UCO), University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium.
| | - Marc Dieu
- Laboratory of Biochemistry and Cellular Biology-URBC, NARILIS, University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium.
| | - Stéphane P Vincent
- Organic Chemistry Research Unit (UCO), University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium.
| | - Pierre Van Cutsem
- Laboratory of Plant Cellular Biology-URBV, University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium.
| | - Carine Michiels
- Laboratory of Biochemistry and Cellular Biology-URBC, NARILIS, University of Namur, 61 rue de Bruxelles, 5000 Namur, Belgium.
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Li W, Niu Y, Xiong DC, Cao X, Ye XS. Highly Substituted Cyclopentane-CMP Conjugates as Potent Sialyltransferase Inhibitors. J Med Chem 2015; 58:7972-90. [PMID: 26406919 DOI: 10.1021/acs.jmedchem.5b01181] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Sialylconjugates on cell surfaces are involved in many biological events such as cellular recognition, signal transduction, and immune response. It has been reported that aberrant sialylation at the nonreducing end of glycoconjugates and overexpression of sialyltransferases (STs) in cells are correlated with the malignance, invasion, and metastasis of tumors. Therefore, inhibitors of STs would provide valuable leads for the discovery of antitumor drugs. On the basis of the transition state of the enzyme-catalyzed sialylation reaction, we proposed that the cyclopentane skeleton in its two puckered conformations might mimic the planar structure of the donor (CMP-Neu5Ac) in the transition state. A series of cyclopentane-containing compounds were designed and synthesized by coupling different cyclopentane α-hydroxyphosphonates with cytidine phosphoramidite. Their inhibitory activities against recombinant human ST6Gal-I were assayed, and a potent inhibitor 48l with a Ki of 0.028 ± 0.006 μM was identified. The results show that the cyclopentanoid-type compounds could become a new type of sialyltransferase inhibitors as biological probes or drug leads.
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Affiliation(s)
- Wenming Li
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Center for Molecular and Translational Medicine, Peking University , Xue Yuan Road No. 38, Beijing 100191, China
| | - Youhong Niu
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Center for Molecular and Translational Medicine, Peking University , Xue Yuan Road No. 38, Beijing 100191, China.,State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University , Lanzhou 730000, China
| | - De-Cai Xiong
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Center for Molecular and Translational Medicine, Peking University , Xue Yuan Road No. 38, Beijing 100191, China
| | - Xiaoping Cao
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University , Lanzhou 730000, China
| | - Xin-Shan Ye
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, and Center for Molecular and Translational Medicine, Peking University , Xue Yuan Road No. 38, Beijing 100191, China
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Zhang W, Sato K, Kato A, Jia YM, Hu XG, Wilson FX, van Well R, Horne G, Fleet GWJ, Nash RJ, Yu CY. Synthesis of Fully Substituted Polyhydroxylated Pyrrolizidines via Cope–House Cyclization. Org Lett 2011; 13:4414-7. [DOI: 10.1021/ol201749c] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Wei Zhang
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China, Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan, Summit PLC, 91, Milton Park, Abingdon, Oxon OX14 4RY, U.K., Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA, U.K., and Phytoquest Limited, IBERS, Plas Gogerddan
| | - Kasumi Sato
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China, Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan, Summit PLC, 91, Milton Park, Abingdon, Oxon OX14 4RY, U.K., Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA, U.K., and Phytoquest Limited, IBERS, Plas Gogerddan
| | - Atsushi Kato
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China, Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan, Summit PLC, 91, Milton Park, Abingdon, Oxon OX14 4RY, U.K., Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA, U.K., and Phytoquest Limited, IBERS, Plas Gogerddan
| | - Yue-Mei Jia
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China, Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan, Summit PLC, 91, Milton Park, Abingdon, Oxon OX14 4RY, U.K., Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA, U.K., and Phytoquest Limited, IBERS, Plas Gogerddan
| | - Xiang-Guo Hu
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China, Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan, Summit PLC, 91, Milton Park, Abingdon, Oxon OX14 4RY, U.K., Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA, U.K., and Phytoquest Limited, IBERS, Plas Gogerddan
| | - Francis X. Wilson
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China, Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan, Summit PLC, 91, Milton Park, Abingdon, Oxon OX14 4RY, U.K., Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA, U.K., and Phytoquest Limited, IBERS, Plas Gogerddan
| | - Renate van Well
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China, Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan, Summit PLC, 91, Milton Park, Abingdon, Oxon OX14 4RY, U.K., Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA, U.K., and Phytoquest Limited, IBERS, Plas Gogerddan
| | - Graeme Horne
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China, Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan, Summit PLC, 91, Milton Park, Abingdon, Oxon OX14 4RY, U.K., Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA, U.K., and Phytoquest Limited, IBERS, Plas Gogerddan
| | - George W. J. Fleet
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China, Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan, Summit PLC, 91, Milton Park, Abingdon, Oxon OX14 4RY, U.K., Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA, U.K., and Phytoquest Limited, IBERS, Plas Gogerddan
| | - Robert J. Nash
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China, Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan, Summit PLC, 91, Milton Park, Abingdon, Oxon OX14 4RY, U.K., Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA, U.K., and Phytoquest Limited, IBERS, Plas Gogerddan
| | - Chu-Yi Yu
- Beijing National Laboratory for Molecular Science (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China, Department of Hospital Pharmacy, University of Toyama, 2630 Sugitani, Toyama 930-0194, Japan, Summit PLC, 91, Milton Park, Abingdon, Oxon OX14 4RY, U.K., Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford, OX1 3TA, U.K., and Phytoquest Limited, IBERS, Plas Gogerddan
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