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Zhu H, Cai Y, Ma S, Futamura Y, Li J, Zhong W, Zhang X, Osada H, Zou H. Privileged Biorenewable Secologanin-Based Diversity-Oriented Synthesis for Pseudo-Natural Alkaloids: Uncovering Novel Neuroprotective and Antimalarial Frameworks. CHEMSUSCHEM 2021; 14:5320-5327. [PMID: 34636473 DOI: 10.1002/cssc.202101868] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/11/2021] [Indexed: 06/13/2023]
Abstract
Bioprivileged molecules hold great promise for supplementing petrochemicals in sustainable organic synthesis of a diverse bioactive products library. Secologanin, a biorenewable monoterpenoid glucoside with unique structural elements, is the key precursor for thousands of natural monoterpenoid alkaloids. Inspired by its inherent highly congested functional groups, a secologanin-based diversity-oriented synthesis (DOS) strategy for novel pseudo-natural alkaloids was developed. All the reactive units of secologanin were involved in these operation simplicity protocols under mild reaction conditions, including the one-step enantioselective transformation of exocyclic C8, C8/C11, and C8/C9/C10 as well as the chemoenzymatic manipulation of endocyclic C2/C6 via the attack by various nucleophiles. A combinatory scenario of the aforementioned reactions further provided diverse polycyclic products with multiple chiral centers. Preliminary activity screening of these newly constructed molecules led to the discovery of antimalarial and highly potent neuroprotective skeletons. The application of green biorenewable secologanin in diversity-oriented pseudo-natural monoterpenoid alkaloid synthesis might encourage the pursuit of valuable bioactive frameworks.
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Affiliation(s)
- Huajian Zhu
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, P. R. China
| | - Yunrui Cai
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, P. R. China
| | - Shijia Ma
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, P. R. China
| | - Yushi Futamura
- Chemical Biology Research Group, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
| | - Jinbiao Li
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, P. R. China
| | - Wen Zhong
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, P. R. China
| | - Xiangnan Zhang
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, P. R. China
| | - Hiroyuki Osada
- Chemical Biology Research Group, RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
| | - Hongbin Zou
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, P. R. China
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Salim F, Yunus YM, Anouar EH, Awang K, Langat M, Cordell GA, Ahmad R. Absolute Configuration of Alkaloids from Uncaria longiflora through Experimental and Computational Approaches. JOURNAL OF NATURAL PRODUCTS 2019; 82:2933-2940. [PMID: 31686505 DOI: 10.1021/acs.jnatprod.8b00380] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The structure elucidation of three new alkaloids named isoformosaninol (1), formosaninol (2), and longiflorine (3), isolated from the leaves of Uncaria longiflora var. pteropoda (Miq.) Ridsdale, along with their biosynthetic pathways are discussed. Their absolute structures were determined through a combination of physical data interpretation and quantum chemical calculations using the time-dependent density functional theory (TDDFT) method.
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Affiliation(s)
- Fatimah Salim
- Atta-ur-Rahman Institute for Natural Product Discovery (AuRIns) , Universiti Teknologi MARA Selangor Branch , Puncak Alam Campus , 42300 Bandar Puncak Alam , Selangor , Malaysia
| | - Yusri Mohd Yunus
- Faculty of Applied Sciences , Universiti Teknologi MARA , 40450 Shah Alam , Selangor , Malaysia
| | - El Hassane Anouar
- Department of Chemistry, College of Sciences and Humanites , Prince Sattam bin Abdulaziz University , P.O. Box 83, 11942 , Al Kharj , Saudi Arabia
| | - Khalijah Awang
- Department of Chemistry, Faculty of Science , University Malaya , 50603 Kuala Lumpur , Malaysia
| | - Moses Langat
- Natural Product Research Group, Department of Chemistry, Faculty of Engineering and Physical Sciences , University of Surrey , Guildford GU2 7XH , United Kingdom
- Jodrell Laboratory, Natural Capital and Plant Health Department, Royal Botanic Gardens , Kew, Richmond, Surrey TW9 3DS , United Kingdom
| | - Geoffrey A Cordell
- Natural Products Inc. , Evanston , Illinois 60203 , United States
- College of Pharmacy , University of Florida , Gainesville , Florida 32610 , United States
| | - Rohaya Ahmad
- Faculty of Applied Sciences , Universiti Teknologi MARA , 40450 Shah Alam , Selangor , Malaysia
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Szabó LF. Rigorous biogenetic network for a group of indole alkaloids derived from strictosidine. Molecules 2008; 13:1875-96. [PMID: 18794791 PMCID: PMC6245392 DOI: 10.3390/molecules13081875] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2008] [Revised: 08/24/2008] [Accepted: 08/26/2008] [Indexed: 12/03/2022] Open
Abstract
Strictosidine, the precursor of more than 2,500 indole alkaloids, was isolated from four species of three plant families. By searching the Dictionary of Natural Products on DVD it was found that about 150 indole alkaloids were obtained from the same species (coalkaloids), which is a direct proof of their common origin. On the base of their three-dimensional structure, taxonomic properties and standard reaction mechanisms an extended network was established which involved the four fundamental skeletons, the three types of carbon framework in the secologanin subunit and all major groups of indole alkaloids derived from secologanin and tryptamine (except a few minor groups, in which only less then 10 alkaloids were known). The system was extended to the heterodimer indole alkaloids and the quinoindole alkaloids as well.
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Affiliation(s)
- László F Szabó
- Department of Organic Chemistry, Semmelweis University, Hogyes utca 7, H-1092 Budapest, Hungary.
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Szabó LF. Reaction mechanism and chemotaxonomy in the formation of the type I indole alkaloids derived from secologanin. J PHYS ORG CHEM 2006. [DOI: 10.1002/poc.1075] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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