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Jia Y, Wang M, Wu F, Wang Y, Chen X. A Synthetic Approach to Several C7-Carbasugars via a Key Intramolecular Morita-Baylis-Hillman Reaction. J Org Chem 2022; 87:14636-14645. [PMID: 36223290 DOI: 10.1021/acs.joc.2c01992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A new synthetic strategy for C7-carbasugars is developed via an intramolecular Morita-Baylis-Hillman reaction, in which a substituted dial precursor prepared from d-mannose cyclizes smoothly in the presence of DMAP to afford polyhydroxylated cyclohex-1-enecarbaldehyde with good yield. By employment of the cyclization products as key intermediates, the first syntheses of carbasugar ester 1 and epicorepoxydon A, as well as practical syntheses of epoxydines B and C, (-)-MK7607, (-)-streptol, and (-)-gabosine E are achieved.
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Affiliation(s)
- Yuanliang Jia
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, PR China
| | - Maolin Wang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, PR China
| | - Folei Wu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, PR China
| | - Yue Wang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, PR China
| | - Xiaochuan Chen
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, PR China
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2
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Rao BV, Surender B, Vinaykumar A, Bharathkumar H. Concise Synthesis of (1R,2S,3R,6R)-6-Ethoxy-4-(hydroxymethyl)cyclohex-4-ene-1,2,3-triol, a Key Intermediate for the Synthesis of Uvacalols I and J. Synlett 2022. [DOI: 10.1055/s-0041-1737965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
AbstractUvacalols are novel carbasugars isolated from the genera Uvaria. In this study, we report concise syntheses of (1R,2S,3R,6R)-6-ethoxy-4-(hydroxymethyl)cyclohex-4-ene-1,2,3-triol, a key intermediate for the synthesis of uvacalols I and J, and of its epimer (1R,2S,3S,6R)-6-ethoxy-4-(hydroxymethyl)cyclohex-4-ene-1,2,3-triol, starting from cheap and readily available methyl d-glucopyranoside.
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Zhu XL, Luo YQ, Wang L, Huang YK, He YG, Xie WJ, Liu SL, Shi XX. Novel Stereoselective Syntheses of (+)-Streptol and (-)-1 -epi-Streptol Starting from Naturally Abundant (-)-Shikimic Acid. ACS OMEGA 2021; 6:17103-17112. [PMID: 34250367 PMCID: PMC8264934 DOI: 10.1021/acsomega.1c02502] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 06/14/2021] [Indexed: 06/13/2023]
Abstract
Novel highly stereoselective syntheses of (+)-streptol and (-)-1-epi-streptol starting from naturally abundant (-)-shikimic acid were described in this article. (-)-Shikimic acid was first converted to the common key intermediate by 11 steps in 40% yield. It was then converted to (+)-streptol by three steps in 72% yield, and it was also converted to (-)-1-epi-streptol by one step in 90% yield. In summary, (+)-streptol and (-)-1-epi-streptol were synthesized from (-)-shikimic acid by 14 and 12 steps in 29 and 36% overall yields, respectively.
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Affiliation(s)
- Xing-Liang Zhu
- Engineering
Research Center of Pharmaceutical Process Chemistry of the Ministry
of Education, School of Pharmacy, East China
University of Science and Technology, 130 Mei-Long Road, Shanghai 200237, P. R. China
| | - Yong-Qiang Luo
- Engineering
Research Center of Pharmaceutical Process Chemistry of the Ministry
of Education, School of Pharmacy, East China
University of Science and Technology, 130 Mei-Long Road, Shanghai 200237, P. R. China
| | - Lei Wang
- Engineering
Research Center of Pharmaceutical Process Chemistry of the Ministry
of Education, School of Pharmacy, East China
University of Science and Technology, 130 Mei-Long Road, Shanghai 200237, P. R. China
| | - Yong-Kang Huang
- Engineering
Research Center of Pharmaceutical Process Chemistry of the Ministry
of Education, School of Pharmacy, East China
University of Science and Technology, 130 Mei-Long Road, Shanghai 200237, P. R. China
| | - Yun-Gang He
- Engineering
Research Center of Pharmaceutical Process Chemistry of the Ministry
of Education, School of Pharmacy, East China
University of Science and Technology, 130 Mei-Long Road, Shanghai 200237, P. R. China
| | - Wen-Jing Xie
- Engineering
Research Center of Pharmaceutical Process Chemistry of the Ministry
of Education, School of Pharmacy, East China
University of Science and Technology, 130 Mei-Long Road, Shanghai 200237, P. R. China
| | - Shi-Ling Liu
- Zhejiang
Arthur Pharmaceutical Co. Ltd., 3556 Linggongtang Road, Jiake Life Science Park Building 3, Daqiao Town, Nanhu District, Jiaxing, Zhejiang 314000, P. R. China
| | - Xiao-Xin Shi
- Engineering
Research Center of Pharmaceutical Process Chemistry of the Ministry
of Education, School of Pharmacy, East China
University of Science and Technology, 130 Mei-Long Road, Shanghai 200237, P. R. China
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Athiyarath V, Roy NJ, Vijil ATV, Sureshan KM. Synthesis of novel seven-membered carbasugars and evaluation of their glycosidase inhibition potentials. RSC Adv 2021; 11:9410-9420. [PMID: 35423467 PMCID: PMC8698521 DOI: 10.1039/d1ra00804h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Accepted: 02/23/2021] [Indexed: 12/15/2022] Open
Abstract
Here, we report the synthesis of five novel seven-membered carbasugar analogs. We adopted a chiral-pool strategy starting from the cheap and readily available d-mannitol to synthesize these ring-expanded carbasugars. Apart from several regioselective protecting group manipulations, these syntheses involved Wittig olefination and ring-closing metathesis as the key steps. We observed an unprecedented deoxygenation reaction of an allylic benzyl ether upon treatment with H2/Pd during the synthesis. Preliminary biological evaluation of the carbasugars revealed that these ring expanded carbasugars act as inhibitors of various glycosidases. This study highlights the importance of the synthesis of novel ring expanded carbasugars and their biological exploration. Here, we report the synthesis of five novel seven-membered carbasugar analogs.![]()
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Affiliation(s)
- Vignesh Athiyarath
- School of Chemistry
- Indian Institute of Science Education and Research Thiruvananthapuram
- India
| | - Naveen J. Roy
- School of Chemistry
- Indian Institute of Science Education and Research Thiruvananthapuram
- India
| | - A. T. V. Vijil
- School of Chemistry
- Indian Institute of Science Education and Research Thiruvananthapuram
- India
| | - Kana M. Sureshan
- School of Chemistry
- Indian Institute of Science Education and Research Thiruvananthapuram
- India
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5
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The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2015. Coord Chem Rev 2016. [DOI: 10.1016/j.ccr.2016.08.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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6
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Hongthong S, Kuhakarn C, Jaipetch T, Prabpai S, Kongsaeree P, Piyachaturawat P, Jariyawat S, Suksen K, Limthongkul J, Panthong A, Nuntasaen N, Reutrakul V. Polyoxygenated cyclohexene derivatives isolated from Dasymaschalon sootepense and their biological activities. Fitoterapia 2015; 106:158-66. [PMID: 26347951 DOI: 10.1016/j.fitote.2015.09.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2015] [Revised: 08/31/2015] [Accepted: 09/01/2015] [Indexed: 11/17/2022]
Abstract
Six new naturally occurring polyoxygenated cyclohexene derivatives together with eight related known derivatives, two known alkaloids, and two known flavonoid derivatives were isolated from bioassay-guided fractionation of the ethyl acetate extract of the leaves and twigs of Dasymaschalon sootepense. The structure elucidation and determination of absolute configurations were established by various spectroscopic methods, X-ray diffraction techniques as well as comparison with the literature data. Several isolated compounds were evaluated for their cytotoxic, anti-HIV-1 RT and anti-inflammatory activities.
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Affiliation(s)
- Sakchai Hongthong
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama 6 Road, Bangkok, Thailand
| | - Chutima Kuhakarn
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama 6 Road, Bangkok, Thailand.
| | - Thaworn Jaipetch
- Mahidol University, Center of Excellence for Innovation in Chemistry (PERCH-CIC), Kanchanaburi Campus, Saiyok, Kanchanaburi, Thailand
| | - Samran Prabpai
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama 6 Road, Bangkok, Thailand
| | - Palangpon Kongsaeree
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama 6 Road, Bangkok, Thailand
| | - Pawinee Piyachaturawat
- Department of Physiology, Faculty of Science, Mahidol University, Rama 6 Road, Bangkok, Thailand
| | - Surawat Jariyawat
- Department of Physiology, Faculty of Science, Mahidol University, Rama 6 Road, Bangkok, Thailand
| | - Kanoknetr Suksen
- Department of Physiology, Faculty of Science, Mahidol University, Rama 6 Road, Bangkok, Thailand
| | - Jitra Limthongkul
- Department of Microbiology, Faculty of Science, Mahidol University, Rama 6 Road, Bangkok, Thailand
| | - Ampai Panthong
- Department of Pharmacology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand
| | - Narong Nuntasaen
- The Forest Herbarium National Park, Wildlife and Plant Conservation Department, Ministry of Natural Resources and Environment, Thailand
| | - Vichai Reutrakul
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama 6 Road, Bangkok, Thailand
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