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Zhu XL, Wang L, Luo YQ, He YG, Li FL, Sun MM, Liu SL, Shi XX. Efficient and Highly Stereoselective Syntheses of (+)- proto-Quercitol and (-)- gala-Quercitol Starting from the Naturally Abundant (-)-Shikimic Acid. ACS OMEGA 2020; 5:1813-1821. [PMID: 32039317 PMCID: PMC7003206 DOI: 10.1021/acsomega.9b02986] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Accepted: 12/05/2019] [Indexed: 05/03/2023]
Abstract
Efficient and highly stereoselective syntheses of (+)-proto-quercitol and (-)-gala-quercitol starting from the naturally abundant (-)-shikimic acid were described in this article. (-)-Shikimic acid was first converted to the key intermediate by eight steps in 53% yield. It was then converted to (+)-proto-quercitol by three steps in 78% yield and was also converted to (-)-gala-quercitol by five steps in 63% yield. In summary, (+)-proto-quercitol and (-)-gala-quercitol were synthesized from (-)-shikimic acid by 11 and 13 steps in 41 and 33% overall yields, respectively.
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Affiliation(s)
- Xing-Liang Zhu
- Shanghai
Key Laboratory of Chemical Biology and Department of Pharmaceutical
Engineering, School of Pharmacy, East China
University of Science and Technology, 130 Mei-Long Road, Shanghai 200237, P. R. China
| | - Lei Wang
- Shanghai
Key Laboratory of Chemical Biology and Department of Pharmaceutical
Engineering, School of Pharmacy, East China
University of Science and Technology, 130 Mei-Long Road, Shanghai 200237, P. R. China
| | - Yong-Qiang Luo
- Shanghai
Key Laboratory of Chemical Biology and Department of Pharmaceutical
Engineering, School of Pharmacy, East China
University of Science and Technology, 130 Mei-Long Road, Shanghai 200237, P. R. China
| | - Yun-Gang He
- Shanghai
Key Laboratory of Chemical Biology and Department of Pharmaceutical
Engineering, School of Pharmacy, East China
University of Science and Technology, 130 Mei-Long Road, Shanghai 200237, P. R. China
| | - Feng-Lei Li
- Shanghai
Key Laboratory of Chemical Biology and Department of Pharmaceutical
Engineering, School of Pharmacy, East China
University of Science and Technology, 130 Mei-Long Road, Shanghai 200237, P. R. China
| | - Mian-Mian Sun
- Shanghai
Key Laboratory of Chemical Biology and Department of Pharmaceutical
Engineering, School of Pharmacy, East China
University of Science and Technology, 130 Mei-Long Road, Shanghai 200237, P. R. China
| | - Shi-Ling Liu
- Shanghai
Qingping Pharmaceutical Co. Ltd., 397 Zhaojiang Road, Baihe Town, Qingpu District, Shanghai 201710, P. R.
China
- E-mail: (S.-L.L.)
| | - Xiao-Xin Shi
- Shanghai
Key Laboratory of Chemical Biology and Department of Pharmaceutical
Engineering, School of Pharmacy, East China
University of Science and Technology, 130 Mei-Long Road, Shanghai 200237, P. R. China
- E-mail: (X.-X.S.)
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Panda SS, Girgis AS, Prakash A, Khanna L, Khanna P, Shalaby EM, Fawzy NG, Jain SC. Protective effects of Aporosa octandra bark extract against D-galactose induced cognitive impairment and oxidative stress in mice. Heliyon 2018; 4:e00951. [PMID: 30761365 PMCID: PMC6286303 DOI: 10.1016/j.heliyon.2018.e00951] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 09/20/2018] [Accepted: 11/15/2018] [Indexed: 11/17/2022] Open
Abstract
Aporosa octandra (Buch.-Ham. ex D.Don) Vickery is a native species of India. Different parts of the plant are used for the medicinal purpose by the tribal peoples of south-eastern part of India. However, the biological properties of A. octandra have not been studied well. The extracts obtained from the bark of A. octandra were evaluated to determine their protective effect on cognitive impairment and oxidative stress in mice induced by D-galactose using the standard protocol. Different dosages of extract AOE-4 (100, 200, and 300 mg/kg, p.o.) were administered to mice, which were previously treated for six weeks with D-galactose (100 mg/kg s.c.). The D-galactose-induced mice showed significantly impaired cognitive behavior, i.e., oxidative defense, compared to the sham group. Six weeks of treatment with A. octandra extract AOE-4 (100, 200 and 300 mg/kg, p.o.) considerably improved the cognitive behavior and oxidative impairment of mice compared to the control alone (D-galactose). For the phytochemical investigation, the bark of A. octandra was successively extracted with dichloromethane and methanol. The chemical constituents of A. octandra were isolated by multiple column chromatography and characterized by different spectral analyses. (R)-Coclaurine (AO-5), an alkaloid, was isolated along with two other compounds from the AOE-4 extract; three more compounds were also isolated from the AOE-1 extract of the bark of A. octandra. All the compounds were isolated for the first time from the bark of A. octandra, and their structures were established by detailed spectral studies. The structure of compound AO-5 was also investigated and confirmed by X-ray diffraction and DFT studies. This study highlights the protective effect of A. octandra bark extract against D-galactose-induced biochemically dysfunction in mice. (R)-Coclaurine (AO-5) was isolated as one of the major components of A. octandra bark from AOE-4 extract; this compound could be further evaluated for the development of new potential drug candidates.
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Affiliation(s)
- Siva S Panda
- Department of Chemistry and Physics, Augusta University, Augusta, GA 30912, USA.,Department of Chemistry, University of Delhi, Delhi 110007, India
| | - Adel S Girgis
- Department of Pesticide Chemistry, National Research Centre, Dokki, Giza 12622, Egypt
| | - Atish Prakash
- Division of Pediatric CNS Infectious Diseases, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Leena Khanna
- Department of Chemistry, University of Delhi, Delhi 110007, India.,Guru Gobind Singh Indraprastha University, Sector-16 C, Dwarka, New Delhi 110078, India
| | - Pankaj Khanna
- Department of Chemistry, University of Delhi, Delhi 110007, India.,Acharya Narendra Dev College, University of Delhi, Govindpuri, Kalkaji, New Delhi 110019, India
| | - ElSayed M Shalaby
- X-Ray Crystallography. Lab., Physics Division, National Research Centre, Dokki, Giza 12622, Egypt
| | - Nehmedo G Fawzy
- Department of Pesticide Chemistry, National Research Centre, Dokki, Giza 12622, Egypt
| | - Subhash C Jain
- Department of Chemistry, University of Delhi, Delhi 110007, India
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Cavalcanti AC, Melo IC, Medeiros AF, Neves MV, Pereira AN, Oliveira EJ. Studies with Cissampelos sympodialis: the search towards the scientific validation of a traditional Brazilian medicine used for the treatment of asthma. REVISTA BRASILEIRA DE FARMACOGNOSIA-BRAZILIAN JOURNAL OF PHARMACOGNOSY 2013. [DOI: 10.1590/s0102-695x2013005000029] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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