1
|
Fang ST, Song YP, Miao FP, Yin XL, Ji NY. Myrochromanol analogues and trichothecene derivatives from the shellfish-derived fungus Albifimbriaverrucaria. PHYTOCHEMISTRY 2023; 209:113645. [PMID: 36924814 DOI: 10.1016/j.phytochem.2023.113645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 03/11/2023] [Accepted: 03/14/2023] [Indexed: 06/18/2023]
Abstract
Eight myrochromanol analogues, including three pairs of epimers at C-2 with the myrochromanol scaffold and two examples of myrochromanol with sugar moiety linked at C-4, together with twelve trichothecene derivatives were isolated from the cultures of a shellfish-derived fungus Albifimbria verrucaria CD1-4. Among them, eight compounds named 2-epi-myrochromanol, ent-myrochromanol B, 4-epi-myrochromanol B, 2-epi-myrochromanol A, myrochromanosides A and B, 6',7'-erythro-(2'E,4'Z)-trichoverrol B, 3R,8S-dihyroxyroridin H were previously undescribed fungal metabolites. Their planar structures and relative configurations were established by 1D and 2D NMR, and HR-MS data analysis, and their absolute configurations were determined using the modified Mosher's method and electronic circular dichrosim calculations. Almost all isolates were evaluated for growth rate inhibition of three marine harmful microalgae Chattonella marina, Heterosigma akashiwo, and Prorocentrum donghaiense, and lethal activity to one marine zooplankton, Artemia salina. Myrochromanosides A and B exhibited obvious inhibitory against three tested microalgae with IC50 values in the range of 9.2-108.9 μM. 8α-Hydroxyroridin H, roridin A and verrucarin A exhibited significant inhibition against P. donghaiense with IC50 values of 6.1, 5.8, and 6.0 μM and toxicity against brine shrimp larvae with LC50 values of 1.4, 2.8, and 0.26 μM, respectively.
Collapse
Affiliation(s)
- Sheng-Tao Fang
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, People's Republic of China
| | - Yin-Ping Song
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, People's Republic of China
| | - Feng-Ping Miao
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, People's Republic of China
| | - Xiu-Li Yin
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, People's Republic of China
| | - Nai-Yun Ji
- Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, People's Republic of China.
| |
Collapse
|
2
|
Walczak D, Sikorski A, Grzywacz D, Nowacki A, Liberek B. Characteristic 1H NMR spectra of β-d-ribofuranosides and ribonucleosides: factors driving furanose ring conformations. RSC Adv 2022; 12:29223-29239. [PMID: 36320749 PMCID: PMC9557318 DOI: 10.1039/d2ra04274f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 10/03/2022] [Indexed: 11/05/2022] Open
Abstract
A series of β-d-ribofuranosides and ribonucleosides fused with 2,3-O-isopropylidene ring was synthesized and studied in terms of their conformational preferences. Based on the 1H NMR spectra, DFT calculations, and X-ray analysis the E0-like and E4-like conformations adopted by these furanosides are identified. The 3E-like and 2E-like conformations are assigned to ribonucleosides without the 2,3-O-isopropylidene group. The studies are supported by analysis of the structural data of β-d-ribofuranosides and ribonucleosides deposited in the Cambridge Crystallographic Data Center (CCDC) database.† Finally, the factors influencing the conformational preferences of the furanose ring with the β-d-ribo configuration are indicated. These are the unfavorable ecliptic orientation of the 2-OH and 3-OH groups, the 1,3-pseudodiaxial interaction of the aglycone and terminal hydroxymethyl group and the endo-anomeric effect. It is also proved that the exo-anomeric effect acts in β-d-ribofuranosides. The 2,3-O-isopropylidene group locks β-d-ribofuranosides in the E0-like conformation whereas ribonucleosides in the E4-like conformation. The conformational preferences of β-d-ribofuranosides are determined by the anomeric effect.![]()
Collapse
Affiliation(s)
- Dominik Walczak
- Faculty of Chemistry, University of GdańskWita Stwosza 6380-308 GdańskPoland
| | - Artur Sikorski
- Faculty of Chemistry, University of GdańskWita Stwosza 6380-308 GdańskPoland
| | - Daria Grzywacz
- Faculty of Chemistry, University of GdańskWita Stwosza 6380-308 GdańskPoland
| | - Andrzej Nowacki
- Faculty of Chemistry, University of GdańskWita Stwosza 6380-308 GdańskPoland
| | - Beata Liberek
- Faculty of Chemistry, University of GdańskWita Stwosza 6380-308 GdańskPoland
| |
Collapse
|
3
|
Rungta P, Kumar M, Mangla P, Kumar S, Prasad AK. Chemo-enzymatic access to C-4′-hydroxyl-tetrahydrofurano-spironucleosides. NEW J CHEM 2021. [DOI: 10.1039/d0nj03253k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The biocatalytic synthesis of C-4′-hydroxyl-tetrahydrofurano-spironucleosides where the tetrahydrofuranospirocyclic ring at C-4′ position locks the furanose ring of nucleosides in the NE-conformation (C4′-exo).
Collapse
Affiliation(s)
- Pallavi Rungta
- Bioorganic Laboratory
- Department of Chemistry
- University of Delhi
- Delhi
- India
| | - Manish Kumar
- Bioorganic Laboratory
- Department of Chemistry
- University of Delhi
- Delhi
- India
| | - Priyanka Mangla
- Bioorganic Laboratory
- Department of Chemistry
- University of Delhi
- Delhi
- India
| | - Sandeep Kumar
- Bioorganic Laboratory
- Department of Chemistry
- University of Delhi
- Delhi
- India
| | - Ashok K. Prasad
- Bioorganic Laboratory
- Department of Chemistry
- University of Delhi
- Delhi
- India
| |
Collapse
|
4
|
Wu JT, Zheng CJ, Zhang B, Zhou XM, Zhou Q, Chen GY, Zeng ZE, Xie JL, Han CR, Lyu JX. Two new secondary metabolites from a mangrove-derived fungus Cladosporium sp. JJM22. Nat Prod Res 2018; 33:34-40. [PMID: 29388439 DOI: 10.1080/14786419.2018.1431634] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Two new compounds (1 and 2), together with six known compounds (3-8), were obtained from the Cladosporium sp. JJM22, an endophytic fungus isolated from the stem bark of the mangrove plant Ceriops tagal collected in South China Sea. Their structures were elucidated on the basis of detailed spectroscopic analysis. The absolute configurations of 1 and 2 were confirmed by the comparison of optical rotation and the CD data with those of known compounds. The inhibitory activities of the isolated compounds against six terrestrial pathogenic bacteria and human cervical carcinoma Hela cell line were evaluated. Compound 3 exhibited a broad spectrum of antibacterial activities.
Collapse
Affiliation(s)
- Jia-Ting Wu
- a Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education , College of Chemistry and Chemical Engineering, Hainan Normal University , Haikou , P. R. China
| | - Cai-Juan Zheng
- a Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education , College of Chemistry and Chemical Engineering, Hainan Normal University , Haikou , P. R. China
| | - Bin Zhang
- a Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education , College of Chemistry and Chemical Engineering, Hainan Normal University , Haikou , P. R. China
| | - Xue-Ming Zhou
- a Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education , College of Chemistry and Chemical Engineering, Hainan Normal University , Haikou , P. R. China
| | - Qi Zhou
- a Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education , College of Chemistry and Chemical Engineering, Hainan Normal University , Haikou , P. R. China
| | - Guang-Ying Chen
- a Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education , College of Chemistry and Chemical Engineering, Hainan Normal University , Haikou , P. R. China
| | - Zhuo-Er Zeng
- a Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education , College of Chemistry and Chemical Engineering, Hainan Normal University , Haikou , P. R. China
| | - Jin-Long Xie
- a Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education , College of Chemistry and Chemical Engineering, Hainan Normal University , Haikou , P. R. China
| | - Chang-Ri Han
- b Key Laboratory of Medicinal and Edible Plants Resources of Hainan Province , School of Chemical and Material Engineering, Hainan Institute of Science and Technology , Haikou , P. R. China
| | - Ji-Xing Lyu
- a Key Laboratory of Tropical Medicinal Plant Chemistry of Ministry of Education , College of Chemistry and Chemical Engineering, Hainan Normal University , Haikou , P. R. China
| |
Collapse
|
5
|
Rana N, Kumar M, Khatri V, Maity J, Prasad AK. Enzymatic separation of epimeric 4- C-hydroxymethylated furanosugars: Synthesis of bicyclic nucleosides. Beilstein J Org Chem 2017; 13:2078-2086. [PMID: 29062429 PMCID: PMC5647706 DOI: 10.3762/bjoc.13.205] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Accepted: 09/17/2017] [Indexed: 01/10/2023] Open
Abstract
Conversion of D-glucose to 4-C-hydroxymethyl-1,2-O-isopropylidene-α-D-ribofuranose, which is a key precursor for the synthesis of different types of bicyclic/spiro nucleosides, led to the formation of an inseparable 1:1 mixture of the desired product and 4-C-hydroxymethyl-1,2-O-isopropylidene-α-D-xylofuranose. A convenient environment friendly Novozyme®-435 catalyzed selective acetylation methodology has been developed for the separation of an epimeric mixture of ribo- and xylotrihydroxyfuranosides in quantitative yields. The structure of both the monoacetylated epimers, i.e., 5-O-acetyl-4-C-hydroxymethyl-1,2-O-isopropylidene-α-D-ribo- and xylofuranose obtained by enzymatic acetylation, has been confirmed by an X-ray study on their corresponding 4-C-p-toluenesulfonyloxymethyl derivatives. Furthermore, the two separated epimers were used for the convergent synthesis of two different types of bicyclic nucleosides, which confirms their synthetic utility.
Collapse
Affiliation(s)
- Neha Rana
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi-110 007, India
| | - Manish Kumar
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi-110 007, India
| | - Vinod Khatri
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi-110 007, India
| | - Jyotirmoy Maity
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi-110 007, India
| | - Ashok K Prasad
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi-110 007, India
| |
Collapse
|
6
|
Identification and Biological Evaluation of Secondary Metabolites from Marine Derived Fungi-Aspergillus sp. SCSIOW3, Cultivated in the Presence of Epigenetic Modifying Agents. Molecules 2017. [DOI: 10.3390/molecules22081302 pmid: 28777] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
|
7
|
Li X, Xia Z, Tang J, Wu J, Tong J, Li M, Ju J, Chen H, Wang L. Identification and Biological Evaluation of Secondary Metabolites from Marine Derived Fungi-Aspergillus sp. SCSIOW3, Cultivated in the Presence of Epigenetic Modifying Agents. Molecules 2017; 22:molecules22081302. [PMID: 28777319 PMCID: PMC6152046 DOI: 10.3390/molecules22081302] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Accepted: 08/01/2017] [Indexed: 11/16/2022] Open
Abstract
Chemical epigenetic manipulation was applied to a deep marine-derived fungus, Aspergillus sp. SCSIOW3, resulting in significant changes of the secondary metabolites. One new diphenylether-O-glycoside (diorcinol 3-O-α-D-ribofuranoside), along with seven known compounds, were isolated from the culture treated with a combination of histone deacetylase inhibitor (suberohydroxamic acid) and DNA methyltransferase inhibitor (5-azacytidine). Compounds 2 and 4 exhibited significant biomembrane protective effect of erythrocytes. 2 also showed algicidal activity against Chattonella marina, a bloom forming alga responsible for large scale fish deaths.
Collapse
Affiliation(s)
- Xiaofan Li
- Shenzhen Key Laboratory of Marine Bioresource and Eco-environmental Science, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China.
- Shenzhen Key Laboratory of Microbial Genetic Engineering, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China.
| | - Zhenyao Xia
- Shenzhen Key Laboratory of Marine Bioresource and Eco-environmental Science, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China.
| | - Jianqiang Tang
- Shenzhen Key Laboratory of Marine Bioresource and Eco-environmental Science, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China.
| | - Jiahui Wu
- Shenzhen Key Laboratory of Marine Bioresource and Eco-environmental Science, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China.
| | - Jing Tong
- Shenzhen Key Laboratory of Marine Bioresource and Eco-environmental Science, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China.
| | - Mengjie Li
- Shenzhen Key Laboratory of Marine Bioresource and Eco-environmental Science, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China.
| | - Jianhua Ju
- CAS Key Laboratory of Tropical Marine Bio-resources and Ecology, Guangdong Key Laboratory of Marine Materia Medica, RNAM Center for Marine Microbiology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, China.
| | - Huirong Chen
- Shenzhen Key Laboratory of Marine Bioresource and Eco-environmental Science, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China.
| | - Liyan Wang
- Shenzhen Key Laboratory of Marine Bioresource and Eco-environmental Science, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China.
- Shenzhen Key Laboratory of Microbial Genetic Engineering, College of Life Sciences and Oceanography, Shenzhen University, Shenzhen 518060, China.
| |
Collapse
|
8
|
Kumar A, Khan A, Malhotra S, Mosurkal R, Dhawan A, Pandey MK, Singh BK, Kumar R, Prasad AK, Sharma SK, Samuelson LA, Cholli AL, Len C, Richards NGJ, Kumar J, Haag R, Watterson AC, Parmar VS. Synthesis of macromolecular systems via lipase catalyzed biocatalytic reactions: applications and future perspectives. Chem Soc Rev 2016; 45:6855-6887. [DOI: 10.1039/c6cs00147e] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
This review highlights the application of lipases in the synthesis of pharmaceutically important small molecules and polymers for diverse applications.
Collapse
|
9
|
Iribarren AM, Iglesias LE. An update of biocatalytic selective acylation and deacylation of monosaccharides. RSC Adv 2016. [DOI: 10.1039/c5ra23453k] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
PAMs synthesis requires highly selective reactions, provided by hydrolases. This review updates research on enzymatic acylation and deacylation of monosaccharides, focusing on synthetic useful PAMs and drug-monosaccharide conjugates involving PAMs.
Collapse
Affiliation(s)
- Adolfo M. Iribarren
- Department of Science and Technology
- Universidad Nacional de Quilmes
- (1876) Bernal
- Argentina
- INGEBI (CONICET)
| | - Luis E. Iglesias
- Department of Science and Technology
- Universidad Nacional de Quilmes
- (1876) Bernal
- Argentina
| |
Collapse
|
10
|
Kim DC, Quang TH, Ngan NTT, Yoon CS, Sohn JH, Yim JH, Feng Y, Che Y, Kim YC, Oh H. Dihydroisocoumarin Derivatives from Marine-Derived Fungal Isolates and Their Anti-inflammatory Effects in Lipopolysaccharide-Induced BV2 Microglia. JOURNAL OF NATURAL PRODUCTS 2015; 78:2948-2955. [PMID: 26651366 DOI: 10.1021/acs.jnatprod.5b00614] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Chemical investigation of the EtOAc extracts of marine-derived fungal isolates Aspergillus sp. SF-5974 and Aspergillus sp. SF-5976 yielded a new dihydroisocoumarin derivative (1) and 12 known metabolites. The structures of the isolated metabolites were established by extensive spectroscopic analyses, including 1D and 2D NMR spectra and MS data. Among the metabolites, the absolute configuration of 5'-hydroxyasperentin (6) was determined by single-crystal X-ray diffraction analysis. The in vitro antineuroinflammatory effects of the metabolites were also evaluated in lipopolysaccharide (LPS)-stimulated microglial cells. Among the isolated metabolites, dihydroisocoumarin derivatives 1-6 (10-80 μM) were shown to inhibit LPS-induced nitric oxide (NO) and prostaglandin E2 (PGE2) production by suppressing the expression of inducible NO synthase (iNOS) and cyclooxygenase-2 (COX-2), respectively, in LPS-stimulated BV2 microglia. Further, 1 (20-80 μM) was found to suppress the phosphorylation of the inhibitor of nuclear factor kappa B-α (IκB-α), interrupt the nuclear translocation of nuclear factor kappa B (NF-κB), and decrease the activation of p38 mitogen-activated protein kinase (MAPK).
Collapse
Affiliation(s)
- Dong-Cheol Kim
- Institute of Pharmaceutical Research and Development, College of Pharmacy, Wonkwang University , Iksan 570-749, Republic of Korea
| | - Tran Hong Quang
- Institute of Pharmaceutical Research and Development, College of Pharmacy, Wonkwang University , Iksan 570-749, Republic of Korea
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST) , 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Nguyen Thi Thanh Ngan
- Institute of Pharmaceutical Research and Development, College of Pharmacy, Wonkwang University , Iksan 570-749, Republic of Korea
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST) , 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Chi-Su Yoon
- Institute of Pharmaceutical Research and Development, College of Pharmacy, Wonkwang University , Iksan 570-749, Republic of Korea
| | - Jae Hak Sohn
- College of Medical and Life Sciences, Silla University , Busan 617-736, Republic of Korea
| | - Joung Han Yim
- Korea Polar Research Institute, KORDI , 7-50 Songdo-dong, Yeonsu-gu, Incheon 406-840, Republic of Korea
| | - Yu Feng
- Beijing Ditan Hospital, Capital Medical University , Beijing 100015, People's Republic of China
| | - Yongsheng Che
- Beijing Institute of Pharmacology & Toxicology , Beijing 100850, People's Republic of China
| | - Youn-Chul Kim
- Institute of Pharmaceutical Research and Development, College of Pharmacy, Wonkwang University , Iksan 570-749, Republic of Korea
| | - Hyuncheol Oh
- Institute of Pharmaceutical Research and Development, College of Pharmacy, Wonkwang University , Iksan 570-749, Republic of Korea
| |
Collapse
|
11
|
Pterocarpans and triterpenoids from Gueldenstaedtia verna. Fitoterapia 2015; 106:46-54. [DOI: 10.1016/j.fitote.2015.07.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Revised: 07/28/2015] [Accepted: 07/31/2015] [Indexed: 01/18/2023]
|
12
|
Kumar G, Dhawan A, Singh BK, Sharma NK, Sharma SK, Prasad AK, Van der Eycken EV, Len C, Watterson AC, Parmar VS. Highly Selective Biocatalytic Transesterification Reactions on Aryl 3-hydroxy-2-(hydroxymethyl)-2-methylpropanoates. Catal Letters 2015. [DOI: 10.1007/s10562-014-1447-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
13
|
Sharma VK, Kumar M, Olsen CE, Prasad AK. Chemoenzymatic Convergent Synthesis of 2′-O,4′-C-Methyleneribonucleosides. J Org Chem 2014; 79:6336-41. [DOI: 10.1021/jo5008338] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Vivek K Sharma
- Bioorganic Laboratory, Department of Chemistry, University of Delhi , Delhi 110 007, India
| | | | | | | |
Collapse
|
14
|
Aggarwal N, Arya A, Mathur D, Singh S, Tyagi A, Kumar R, Rana N, Singh R, Prasad AK. Effect of acyl chain length on selective biocatalytic deacylation on O-aryl glycosides and separation of anomers. Bioorg Chem 2014; 53:83-91. [PMID: 24632507 DOI: 10.1016/j.bioorg.2014.02.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Revised: 02/07/2014] [Accepted: 02/11/2014] [Indexed: 11/18/2022]
Abstract
It has been demonstrated that Lipozyme® TL IM (Thermomyces lanuginosus lipase immobilised on silica) can selectively deacylate the ester function involving the C-5' hydroxyl group of α-anomers over the other acyl functions of anomeric mixture of peracylated O-aryl α,β-D-ribofuranoside. The analysis of results of biocatalytic deacylation reaction revealed that the reaction time decreases with the increase in the acyl chain length from C1 to C4. The unique selectivity of Lipozyme® TL IM has been harnessed for the separation of anomeric mixture of peracylated O-aryl α,β-D-ribofuranosides, The lipase mediated selective deacylation methodology has been used for the synthesis of O-aryl α-D-ribofuranosides and O-aryl β-D-ribofuranosides in pure forms, which can be used as chromogenic substrate for the detection of pathogenic microbial parasites containing glycosidases.
Collapse
Affiliation(s)
- Neha Aggarwal
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi 110 007, India
| | - Anu Arya
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi 110 007, India
| | - Divya Mathur
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi 110 007, India
| | - Sukhdev Singh
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi 110 007, India
| | - Abhilash Tyagi
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi 110 007, India
| | - Rajesh Kumar
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi 110 007, India
| | - Neha Rana
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi 110 007, India
| | - Rajendra Singh
- CFEES, Brig. S.K. Mazumdar Road, Timarpur, Delhi 110 054, India
| | - Ashok K Prasad
- Bioorganic Laboratory, Department of Chemistry, University of Delhi, Delhi 110 007, India.
| |
Collapse
|
15
|
Li XB, Xie F, Liu SS, Li Y, Zhou JC, Liu YQ, Yuan HQ, Lou HX. Naphtho-γ-pyrones from EndophyteAspergillus nigerOccurring in the LiverwortHeteroscyphus tener(Steph.)Schiffn. Chem Biodivers 2013; 10:1193-201. [DOI: 10.1002/cbdv.201300042] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2013] [Indexed: 11/12/2022]
|
16
|
Li JR, Li DD, Fang F, Du QR, Lin L, Sun J, Qian Y, Zhu HL. Discovery of 4,6-substituted-(diaphenylamino)quinazolines as potent c-Src inhibitors. Org Biomol Chem 2013; 11:8375-86. [DOI: 10.1039/c3ob41161c] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
|