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Usami Y, Nakamura K, Mizobuchi Y, Mizuki K, Harusawa S, Yoneyama H, Yamada T. Enantiomeric composition of natural pericosine A derived from Periconia byssoides and α-glycosidase inhibitory activity of (-)-enantiomer. Chirality 2022; 34:1320-1327. [PMID: 35775430 DOI: 10.1002/chir.23491] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 05/26/2022] [Accepted: 06/16/2022] [Indexed: 01/12/2023]
Abstract
Chiral high-performance liquid chromatography (HPLC) analysis of natural pericosine A, which appeared in literature first in 1977, from Periconia byssoides was conducted using a column CHIRALPAK® AD-H to determine the enantiomeric composition of the original mixture which was found to be 68: 32 mixtures of (+)- and (-)-enantiomer, respectively. Furthermore, two independently isolated samples of pericosine A from the same fungus were also analyzed to show the two peaks in the HPLC charts at approximate 1:1 ratio. These results concluded that pericosine A derived from Periconia byssoides was indeed an enantiomeric mixture. Synthesized enantiomers were subjected to evaluation of antitumor activity against three kinds of tumor cells (p388, L1210, HL-60), indicating moderate cytotoxicity against all three kinds of tumor cell lines, but significant difference in potency between the enantiomers was not observed. In contrast, when both the enantiomers of pericosine A were evaluated against five kinds of glycosidases-inhibitory activities (α- and β-glucosidases, α- and β-galactosidases, and α-mannosidase), an apparent difference on anti-glycosidase assay was found between the enantiomers: (-)-pericosine A inhibited α-glucosidase at IC50 : 2.25 mM, and β-galactosidase at IC50 : 5.38 mM, albeit the (+)-enantiomer showed inactivity against these five enzymes.
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Affiliation(s)
- Yoshihide Usami
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences (Renamed as Osaka Medical and Pharmaceutical University in April 2021), Osaka, Japan
| | - Kimika Nakamura
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences (Renamed as Osaka Medical and Pharmaceutical University in April 2021), Osaka, Japan
| | - Yoshino Mizobuchi
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences (Renamed as Osaka Medical and Pharmaceutical University in April 2021), Osaka, Japan
| | - Koji Mizuki
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences (Renamed as Osaka Medical and Pharmaceutical University in April 2021), Osaka, Japan
| | - Shinya Harusawa
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences (Renamed as Osaka Medical and Pharmaceutical University in April 2021), Osaka, Japan
| | - Hiroki Yoneyama
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences (Renamed as Osaka Medical and Pharmaceutical University in April 2021), Osaka, Japan
| | - Takeshi Yamada
- Department of Medicinal Molecular Chemistry, Osaka University of Pharmaceutical Sciences, Osaka, Japan
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Usami Y, Mizobuchi Y, Ijuin M, Yamada T, Morita M, Mizuki K, Yoneyama H, Harusawa S. Synthesis of 6-Halo-Substituted Pericosine A and an Evaluation of Their Antitumor and Antiglycosidase Activities. Mar Drugs 2022; 20:md20070438. [PMID: 35877731 PMCID: PMC9323573 DOI: 10.3390/md20070438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 06/25/2022] [Accepted: 06/28/2022] [Indexed: 11/16/2022] Open
Abstract
The enantiomers of 6-fluoro-, 6-bromo-, and 6-iodopericosine A were synthesized. An efficient synthesis of both enantiomers of pericoxide via 6-bromopericosine A was also developed. These 6-halo-substituted pericosine A derivatives were evaluated in terms of their antitumor activity against three types of tumor cells (p388, L1210, and HL-60) and glycosidase inhibitory activity. The bromo- and iodo-congeners exhibited moderate antitumor activity similar to pericosine A against the three types of tumor cell lines studied. The fluorinated compound was less active than the others, including pericosine A. In the antitumor assay, no significant difference in potency between the enantiomers was observed for any of the halogenated compounds. Meanwhile, the (−)-6-fluoro- and (−)-6-bromo-congeners inhibited α-glucosidase to a greater extent than those of their corresponding (+)-enantiomers, whereas (+)-iodopericosine A showed increased activity when compared to its (−)-enantiomer.
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Affiliation(s)
- Yoshihide Usami
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, Nasahara 4-20-1, Takatsuki 569-1094, Osaka, Japan; (Y.M.); (M.I.); (M.M.); (K.M.); (H.Y.); (S.H.)
- Correspondence: ; Tel.: +81-796-90-1087; Fax: +81-796-90-1005
| | - Yoshino Mizobuchi
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, Nasahara 4-20-1, Takatsuki 569-1094, Osaka, Japan; (Y.M.); (M.I.); (M.M.); (K.M.); (H.Y.); (S.H.)
| | - Mai Ijuin
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, Nasahara 4-20-1, Takatsuki 569-1094, Osaka, Japan; (Y.M.); (M.I.); (M.M.); (K.M.); (H.Y.); (S.H.)
| | - Takeshi Yamada
- Department of Medicinal Molecular Chemistry, Osaka University of Pharmaceutical Sciences, Nasahara 4-20-1, Takatsuki 569-1094, Osaka, Japan;
| | - Mizuki Morita
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, Nasahara 4-20-1, Takatsuki 569-1094, Osaka, Japan; (Y.M.); (M.I.); (M.M.); (K.M.); (H.Y.); (S.H.)
| | - Koji Mizuki
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, Nasahara 4-20-1, Takatsuki 569-1094, Osaka, Japan; (Y.M.); (M.I.); (M.M.); (K.M.); (H.Y.); (S.H.)
| | - Hiroki Yoneyama
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, Nasahara 4-20-1, Takatsuki 569-1094, Osaka, Japan; (Y.M.); (M.I.); (M.M.); (K.M.); (H.Y.); (S.H.)
| | - Shinya Harusawa
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, Nasahara 4-20-1, Takatsuki 569-1094, Osaka, Japan; (Y.M.); (M.I.); (M.M.); (K.M.); (H.Y.); (S.H.)
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Abstract
Periconia is filamentous fungi belonging to the Periconiaceae family, and over the last 50 years, the genus has shown interest in natural product exploration for pharmacological purposes. Therefore, this study aims to analyze the different species of Periconia containing natural products such as terpenoids, polyketides, cytochalasan, macrosphelides, cyclopentenes, aromatic compounds, and carbohydrates carbasugar derivates. The isolated compound of this kind, which was reported in 1969, consisted of polyketide derivatives and their structures and was determined by chemical reaction and spectroscopic methods. After some years, 77 compounds isolated from endophytic fungus Periconia were associated with eight plant species, 28 compounds from sea hare Aplysia kurodai, and ten from endolichenic fungi Parmelia sp. The potent pharmacological agents from this genus are periconicin A, which acts as an antimicrobial, pericochlorosin B as an anti-human immunodeficiency virus (HIV), peribysin D, and pericosine A as cytotoxic agents, and periconianone A as an anti-inflammatory agent. Furthermore, information about taxol and piperine from Periconia producing species was also provided. Therefore, this study supports discovering new drugs produced by the Periconia species and compares them for future drug development.
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Jun JJ, Xie X. Implementation of Diverse Synthetic and Strategic Approaches to Biologically Active Sulfamides. ChemistrySelect 2021. [DOI: 10.1002/slct.202004765] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jaden J. Jun
- Department of Pharmaceutical Sciences and Computational Chemical Genomics Screening Center School of Pharmacy 335 Sutherland Drive 206 Salk Pavilion University of Pittsburgh Pittsburgh PA15261 USA
- NIH National Center of Excellence for Computational Drug Abuse Research
- Drug Discovery Institute
| | - Xiang‐Qun Xie
- Department of Pharmaceutical Sciences and Computational Chemical Genomics Screening Center School of Pharmacy 335 Sutherland Drive 206 Salk Pavilion University of Pittsburgh Pittsburgh PA15261 USA
- NIH National Center of Excellence for Computational Drug Abuse Research
- Drug Discovery Institute
- Departments of Computational Biology and Structural Biology Director of CCGS and NIDA CDAR Centers School of Medicine University of Pittsburgh Pittsburgh Pennsylvania 15261 United States
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Biduś N, Banachowicz P, Buda S. Application of a tandem seleno-michael/aldol reaction in the total syntheses of (+)-Pericosine B, (+)-Pericosine C, (+)-COTC and 7-chloro-analogue of (+)-Gabosine C. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.131397] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Usami Y, Higuchi M, Mizuki K, Yamamoto M, Kanki M, Nakasone C, Sugimoto Y, Shibano M, Uesawa Y, Nagai J, Yoneyama H, Harusawa S. Syntheses and Glycosidase Inhibitory Activities, and in Silico Docking Studies of Pericosine E Analogs Methoxy-Substituted at C6. Mar Drugs 2020; 18:E221. [PMID: 32326065 PMCID: PMC7230162 DOI: 10.3390/md18040221] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2020] [Revised: 04/15/2020] [Accepted: 04/17/2020] [Indexed: 12/14/2022] Open
Abstract
Inspired by the significant -glucosidase inhibitory activities of (+)- and (-)-pericosine E, we herein designed and synthesized 16 analogs of these marine natural products bearing a methoxy group instead of a chlorine atom at C6. Four of these compounds exhibited moderate -glucosidase inhibitory activities, which were weaker than those of the corresponding chlorine-containing species. The four compounds could be prepared by coupling reactions utilizing the (-)-pericosine B moiety. An additional in silico docking simulation suggested that the reason of reduced activity of the C6-methoxylated analogs might be an absence of hydrogen bonding between a methoxy group with the surrounding amino acid residues in the active site in -glucosidase.
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Affiliation(s)
- Yoshihide Usami
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, Nasahara 4-20-1, Takatsuki, Osaka 569-1094, Japan; (M.H.); (K.M.); (M.Y.); (M.K.); (C.N.); (Y.S.); (H.Y.); (S.H.)
| | - Megumi Higuchi
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, Nasahara 4-20-1, Takatsuki, Osaka 569-1094, Japan; (M.H.); (K.M.); (M.Y.); (M.K.); (C.N.); (Y.S.); (H.Y.); (S.H.)
| | - Koji Mizuki
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, Nasahara 4-20-1, Takatsuki, Osaka 569-1094, Japan; (M.H.); (K.M.); (M.Y.); (M.K.); (C.N.); (Y.S.); (H.Y.); (S.H.)
| | - Mizuki Yamamoto
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, Nasahara 4-20-1, Takatsuki, Osaka 569-1094, Japan; (M.H.); (K.M.); (M.Y.); (M.K.); (C.N.); (Y.S.); (H.Y.); (S.H.)
| | - Mao Kanki
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, Nasahara 4-20-1, Takatsuki, Osaka 569-1094, Japan; (M.H.); (K.M.); (M.Y.); (M.K.); (C.N.); (Y.S.); (H.Y.); (S.H.)
| | - Chika Nakasone
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, Nasahara 4-20-1, Takatsuki, Osaka 569-1094, Japan; (M.H.); (K.M.); (M.Y.); (M.K.); (C.N.); (Y.S.); (H.Y.); (S.H.)
| | - Yuya Sugimoto
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, Nasahara 4-20-1, Takatsuki, Osaka 569-1094, Japan; (M.H.); (K.M.); (M.Y.); (M.K.); (C.N.); (Y.S.); (H.Y.); (S.H.)
| | - Makio Shibano
- Department of Natural Products Research, Osaka University of Pharmaceutical Sciences, Nasahara 4-20-1, Takatsuki, Osaka 569-1094, Japan;
| | - Yoshihiro Uesawa
- Department of Medical Molecular Informatics, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan; (Y.U.); (J.N.)
| | - Junko Nagai
- Department of Medical Molecular Informatics, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo 204-8588, Japan; (Y.U.); (J.N.)
| | - Hiroki Yoneyama
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, Nasahara 4-20-1, Takatsuki, Osaka 569-1094, Japan; (M.H.); (K.M.); (M.Y.); (M.K.); (C.N.); (Y.S.); (H.Y.); (S.H.)
| | - Shinya Harusawa
- Department of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences, Nasahara 4-20-1, Takatsuki, Osaka 569-1094, Japan; (M.H.); (K.M.); (M.Y.); (M.K.); (C.N.); (Y.S.); (H.Y.); (S.H.)
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7
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Banachowicz P, Buda S. Gram-scale carbasugar synthesis via intramolecular seleno-Michael/aldol reaction. RSC Adv 2019; 9:12928-12935. [PMID: 35520757 PMCID: PMC9063748 DOI: 10.1039/c9ra02002k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2019] [Accepted: 04/17/2019] [Indexed: 12/04/2022] Open
Abstract
Carbasugars represent an important category of natural products possessing a broad spectrum of biological activities. Lots of effort has been done to develop gram scale synthesis. We are presenting a new approach to gram scale synthesis of the carbasugar skeleton via intramolecular seleno-Michael/aldol reaction. The proposed strategy gave gram amounts of 6-hydroxy shikimic ester in a tandem process in 36% overall yield starting from d-lyxose. We have attempted to demonstrate the synthetic utility of 6-hydroxyshikimic acid derivatives by covering the important synthetic modifications and related applications, namely synthesis of protected (-)-gabosine E, (-)-MK7606, (-)-valienamine and finally unprotected methyl (-)-shikimate.
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Affiliation(s)
- Piotr Banachowicz
- Faculty of Chemistry, Jagiellonian University Gronostajowa 2 30-387 Krakow Poland
| | - Szymon Buda
- Faculty of Chemistry, Jagiellonian University Gronostajowa 2 30-387 Krakow Poland
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8
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Gil A, Albericio F, Álvarez M. Role of the Nozaki–Hiyama–Takai–Kishi Reaction in the Synthesis of Natural Products. Chem Rev 2017. [DOI: 10.1021/acs.chemrev.7b00144] [Citation(s) in RCA: 99] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Alejandro Gil
- ChemBio Lab, Barcelona Science Park, Baldiri Reixac 10, E-08028 Barcelona, Spain
- CIBER-BBN,
Networking
Centre on Bioengineering, Biomaterials and Nanomedicine, Barcelona Science Park, Baldiri Reixac 10, 08028 Barcelona, Spain
| | - Fernando Albericio
- ChemBio Lab, Barcelona Science Park, Baldiri Reixac 10, E-08028 Barcelona, Spain
- CIBER-BBN,
Networking
Centre on Bioengineering, Biomaterials and Nanomedicine, Barcelona Science Park, Baldiri Reixac 10, 08028 Barcelona, Spain
- University of Kwa-Zulu-Natal, 4001, Durban, South Africa
| | - Mercedes Álvarez
- ChemBio Lab, Barcelona Science Park, Baldiri Reixac 10, E-08028 Barcelona, Spain
- CIBER-BBN,
Networking
Centre on Bioengineering, Biomaterials and Nanomedicine, Barcelona Science Park, Baldiri Reixac 10, 08028 Barcelona, Spain
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9
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Vinaykumar A, Muniraju C, Rao BV. Stereoselective total synthesis of (−)-zeylenol, a key intermediate for the synthesis of (+)-pipoxide, (−)-uvarigranol G and (−)-tonkinenin A. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.02.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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10
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Synthesis of Natural O-Linked Carba-Disaccharides, (+)- and (-)-Pericosine E, and Their Analogues as α-Glucosidase Inhibitors. Mar Drugs 2017; 15:md15010022. [PMID: 28124983 PMCID: PMC5295242 DOI: 10.3390/md15010022] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Revised: 01/12/2017] [Accepted: 01/16/2017] [Indexed: 12/04/2022] Open
Abstract
Pericosine E (6), a metabolite of Periconia byssoides OUPS-N133 was originally isolated from the sea hare Aplysia kurodai, which exists as an enantiomeric mixture in nature. The enantiospecific syntheses of both enantiomers of Periconia byssoides OUPS-N133 has been achieved, along with six stereoisomers, using a common simple synthetic strategy. For these efficient syntheses, highly regio- and steroselective processes for the preparation of bromohydrin and anti-epoxide intermediates were applied. In order to access the unique O-linked carbadisaccharide structure, coupling of chlorohydrin as a donor and anti-epoxide as an acceptor was achieved using catalytic BF3·Et2O. Most of the synthesized compounds exhibited selectively significant inhibitory activity against α-glycosidase derived from yeast. The strongest analog showed almost 50 times the activity of the positive control, deoxynojirimycin.
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11
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12
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Asachenko AF, Valaeva VN, Kudakina VA, Uborsky DV, Izmer VV, Kononovich DS, Voskoboynikov AZ. Coupling of aromatic aldehydes with aryl halides in the presence of nickel catalysts with diazabutadiene ligands. Russ Chem Bull 2016. [DOI: 10.1007/s11172-016-1321-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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13
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Chung CY, Angamuthu V, Li LS, Hou DR. Palladium-Catalyzed Allylic Substitution for the Synthesis of Pericosines. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201600355] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Cheng-Yu Chung
- Department of Chemistry; National Central University; 300 Jhong-Da Rd Jhong-Li Taoyuan 32001 Taiwan
| | - Venkatachalam Angamuthu
- Department of Chemistry; National Central University; 300 Jhong-Da Rd Jhong-Li Taoyuan 32001 Taiwan
| | - Long-Shiang Li
- Department of Chemistry; National Central University; 300 Jhong-Da Rd Jhong-Li Taoyuan 32001 Taiwan
| | - Duen-Ren Hou
- Department of Chemistry; National Central University; 300 Jhong-Da Rd Jhong-Li Taoyuan 32001 Taiwan
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14
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Usami Y, Mizuki K. Total Syntheses of Biologically Active Compounds around Marine Natural Products. J SYN ORG CHEM JPN 2016. [DOI: 10.5059/yukigoseikyokaishi.74.1172] [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)
- Yoshihide Usami
- Laboratory of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences
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15
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Herndon JW. The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2012. Coord Chem Rev 2014. [DOI: 10.1016/j.ccr.2014.02.026] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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16
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Mizuki K, Iwahashi K, Murata N, Ikeda M, Nakai Y, Yoneyama H, Harusawa S, Usami Y. Synthesis of marine natural product (-)-pericosine E. Org Lett 2014; 16:3760-3. [PMID: 24991702 DOI: 10.1021/ol501631r] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The first synthesis of (-)-pericosine E (6), a metabolite of the Periconia byssoides OUPS-N133 isolated originally from the sea hare Aplysia kurodai, has been achieved. Efficient and regioselective synthetic procedures for the synthesis of key intermediates, anti- and syn-epoxides 9 and 10, were developed using an anti-epoxidation of diene 12 with TFDO and a bromohydrination of 12 with NBS in CH(3)CN/H(2)O (2:3), respectively. In addition, comparison of the specific optical rotations between synthetic 6 and natural 6 elucidated that the naturally preferred enantiomer of pericosine E had the same absolute configuration as (-)-6 synthesized from chlorohydrin (-)-8 and anti-epoxide (+)-9.
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Affiliation(s)
- Koji Mizuki
- Laboratory of Pharmaceutical Organic Chemistry, Osaka University of Pharmaceutical Sciences , 4-20-1 Nasahara, Takatsuki, Osaka 569-1094, Japan
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17
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Hill-Cousins JT, Salim SS, Bakar YM, Bellingham RK, Light ME, Brown RC. One-pot enyne ring-closing metathesis–Diels–Alder reactions for the synthesis of polycyclic sulfamides. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.04.014] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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18
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Babu DC, Rao CB, Venkatesham K, Selvam JJP, Venkateswarlu Y. Toward synthesis of carbasugars (+)-gabosine C, (+)-COTC, (+)-pericosine B, and (+)-pericosine C. Carbohydr Res 2013; 388:130-7. [PMID: 24637047 DOI: 10.1016/j.carres.2013.08.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2013] [Revised: 08/03/2013] [Accepted: 08/09/2013] [Indexed: 11/28/2022]
Abstract
Asymmetric total synthesis of (+)-gabosine C, (+)-pericosine B, and (+)-pericosine C has been reported from readily available d-(-)-isoascorbic acid and d-ribose involving Grubbs ring closing metathesis, Morita-Baylis-Hillman (MBH) reaction, and Luche reduction.
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Affiliation(s)
- D Chanti Babu
- Division of Natural Product Chemistry, Indian Institute of Chemical Technology, Hyderabad 500 007, India.
| | - Ch Bhujanga Rao
- Division of Natural Product Chemistry, Indian Institute of Chemical Technology, Hyderabad 500 007, India
| | - K Venkatesham
- Division of Natural Product Chemistry, Indian Institute of Chemical Technology, Hyderabad 500 007, India
| | - J Jon Paul Selvam
- Division of Natural Product Chemistry, Indian Institute of Chemical Technology, Hyderabad 500 007, India
| | - Y Venkateswarlu
- Division of Natural Product Chemistry, Indian Institute of Chemical Technology, Hyderabad 500 007, India
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