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Ochmann L, Fuhrmann M, Gössl FJ, Makaveev A, Schreiner PR. All That metas─Synthesis of Dispersion Energy Donor-Substituted Benzenes. Org Lett 2022; 24:6968-6972. [DOI: 10.1021/acs.orglett.2c02780] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lukas Ochmann
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Michael Fuhrmann
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Felix J. Gössl
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Alexander Makaveev
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Peter R. Schreiner
- Institute of Organic Chemistry, Justus Liebig University, Heinrich-Buff-Ring 17, 35392 Giessen, Germany
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3
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Affiliation(s)
- Jiarong Shi
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, P. R. China, 400030
| | - Lianggui Li
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, P. R. China, 400030
| | - Yang Li
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, P. R. China, 400030
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4
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Kawamoto Y, Karube F, Kobayashi T, Ito H. Enantioselective Total Synthesis of Mollebenzylanol A. Org Lett 2020; 22:7609-7612. [PMID: 32924500 DOI: 10.1021/acs.orglett.0c02811] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Mollebenzylanol A is a tyrosine phosphatase 1B inhibitor isolated from the leaves of Rhododendron molle in 2018 that has a highly functionalized structure. The first enantioselective total synthesis of mollebenzylanol A was achieved in 13 steps from a known chiral starting material. An efficient and practical synthetic scheme was disclosed in a stereocontrolled manner, including stereo/regioselective epoxidation, Eschenmoser-Claisen rearrangement, and stereocontrolled dihydroxylation.
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Affiliation(s)
- Yuichiro Kawamoto
- School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Fuka Karube
- School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Toyoharu Kobayashi
- School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Hisanaka Ito
- School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan
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5
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Radhika S, Saranya S, Harry NA, Anilkumar G. Recent Advances and Prospects in the Chemistry of
o
‐Benzoquinones. ChemistrySelect 2019. [DOI: 10.1002/slct.201902637] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Sankaran Radhika
- School of Chemical SciencesMahatma Gandhi University, Priyadarsini Hills P.O., Kottayam Kerala 686560 India
| | - Salim Saranya
- School of Chemical SciencesMahatma Gandhi University, Priyadarsini Hills P.O., Kottayam Kerala 686560 India
| | - Nissy Ann Harry
- School of Chemical SciencesMahatma Gandhi University, Priyadarsini Hills P.O., Kottayam Kerala 686560 India
| | - Gopinathan Anilkumar
- School of Chemical SciencesMahatma Gandhi University, Priyadarsini Hills P.O., Kottayam Kerala 686560 India
- Advanced Molecular Materials Research Centre (AMMRC)Mahatma Gandhi University, Priyadarsini Hills P.O., Kottayam Kerala 686560 India
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6
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Chen S, Chen T, Liu G, Wang X, Zhu G, Liu Y, Fu S, Liu B. Total synthesis of (±)-epi-stemodan-13α,17-diol. Org Biomol Chem 2019; 17:4711-4714. [PMID: 31025696 DOI: 10.1039/c9ob00661c] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Stemodan-13α,17-diol is a natural stemodane-type diterpenoid isolated from Stemodia chilensis. Herein we report the total synthesis of its epimer, stemodan-13β,17-diol, by applying titanium-mediated polyene cyclization and iron-catalyzed [5 + 2] cycloaddition as the key transformations to expeditiously install the molecular scaffold.
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Affiliation(s)
- Song Chen
- Key Laboratory of Green Chemistry &Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, China.
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8
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Guo K, Liu YC, Liu Y, Luo SH, Li WY, Li XN, Li SH. Diversified abietane family diterpenoids from the leaves of Leucosceptrum canum and their cytotoxic activity. PHYTOCHEMISTRY 2019; 157:43-52. [PMID: 30366203 DOI: 10.1016/j.phytochem.2018.10.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 09/29/2018] [Accepted: 10/08/2018] [Indexed: 06/08/2023]
Abstract
Twenty-four diterpenoids of abietane family, including thirteen undescribed compounds and eleven known ones, were isolated from the leaves of Leucosceptrum canum. Their structures were elucidated by comprehensive spectroscopic analyses (including 1D and 2D-NMR and HRMS), and in the case of 15-hydroxy-abieta-8,11,13-trien-3-one by single-crystal X-ray diffraction. Their frameworks are highly diversified, involving normal abietane, 9,10-epoxy-9,10-seco-abietane, 18(4 → 3)-abeo-abietane, 3,4-seco-18(4 → 3)-abeo-abietane, and 16-nor-abietane. Selected compounds were evaluated for their cytotoxic activity against three human tumor cell lines, NCI-H1975, HepG2 and MCF-7. Among them, 3β-hydroxy-abieta-8,13-diene, 3β-hydroxy-abieta-8,11,13,15-tetraene, and 3β-hydroxy-9,10-epoxy-9,10-seco-abieta-8,11,13-triene exhibited moderate cytotoxicity against all three cell lines with IC50 values ranging from 8.11 to 50.73 μM, while 3α-hydroxy-abieta-8,11,13,15-tetraene, 3β-hydroxy-abieta-8,11,13,15-tetraen-7-one, and 15-hydroxy-18(4 → 3)-abeo-abieta-3,8,11,13-tetraene were selectively active with IC50 values ranging from 28.80 to 71.29 μM.
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Affiliation(s)
- Kai Guo
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, PR China; Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming, 650201, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Yan-Chun Liu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, PR China; Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming, 650201, PR China
| | - Yan Liu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, PR China; Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming, 650201, PR China
| | - Shi-Hong Luo
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, PR China; Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming, 650201, PR China
| | - Wen-Yuan Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, PR China; Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming, 650201, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Xiao-Nian Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, PR China; Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming, 650201, PR China
| | - Sheng-Hong Li
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, PR China; Yunnan Key Laboratory of Natural Medicinal Chemistry, Kunming, 650201, PR China.
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9
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Zhou J, Liu J, Dang T, Zhou H, Zhang H, Yao G. Mollebenzylanols A and B, Highly Modified and Functionalized Diterpenoids with a 9-Benzyl-8,10-dioxatricyclo[5.2.1.01,5]decane Core from Rhododendron molle. Org Lett 2018. [DOI: 10.1021/acs.orglett.8b00606] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Junfei Zhou
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Junjun Liu
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Ting Dang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Haofeng Zhou
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Hanqi Zhang
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
| | - Guangmin Yao
- Hubei Key Laboratory of Natural Medicinal Chemistry and Resource Evaluation, School of Pharmacy, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
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