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Chen X, Wang H, Zeng J, Li Q, Zhang T, Yang Q, Tang P, Chen FE. Stereodivergent Total Synthesis of Tacaman Alkaloids. Angew Chem Int Ed Engl 2024:e202407149. [PMID: 38949229 DOI: 10.1002/anie.202407149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 06/30/2024] [Accepted: 07/01/2024] [Indexed: 07/02/2024]
Abstract
This paper describes a concise, asymmetric and stereodivergent total synthesis of tacaman alkaloids. A key step in this synthesis is the biocatalytic Baeyer-Villiger oxidation of cyclohexanone, which was developed to produce seven-membered lactones and establish the required stereochemistry at the C14 position (92 % yield, 99 % ee, 500 mg scale). Cis- and trans-tetracyclic indoloquinolizidine scaffolds were rapidly synthesized through an acid-triggered, tunable acyl-Pictet-Spengler type cyclization cascade, serving as the pivotal reaction for building the alkaloid skeleton. Computational results revealed that hydrogen bonding was crucial in stabilizing intermediates and inducing different addition reactions during the acyl-Pictet-Spengler cyclization cascade. By strategically using these two reactions and the late-stage diversification of the functionalized indoloquinolizidine core, the asymmetric total syntheses of eight tacaman alkaloids were achieved. This study may potentially advance research related to the medicinal chemistry of tacaman alkaloids.
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Affiliation(s)
- Xiangtao Chen
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Huijing Wang
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Jie Zeng
- Pharmaceutical Research Institute, Wuhan Institute of Technology, Wuhan, 430205, China
| | - Qiuhong Li
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Tonghui Zhang
- Pharmaceutical Research Institute, Wuhan Institute of Technology, Wuhan, 430205, China
| | - Qiaoyun Yang
- Pharmaceutical Research Institute, Wuhan Institute of Technology, Wuhan, 430205, China
| | - Pei Tang
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
| | - Fen-Er Chen
- Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu, 610041, China
- Engineering Center of Catalysis and Synthesis for Chiral Molecules, Department of Chemistry, Fudan University, Shanghai, 200433, China
- Shanghai Engineering Center of Industrial Asymmetric Catalysis for Chiral Drugs, Shanghai, 200433, China
- College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang, 330022, China
- Pharmaceutical Research Institute, Wuhan Institute of Technology, Wuhan, 430205, China
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Tolvanen A, Belle DD, Lounasmaa M. Aldehyde Intermediates in the Synthesis of Tacamine-Type Indole Alkaloids: Preparation of (±)-apotacamine. Helv Chim Acta 2004. [DOI: 10.1002/hlca.19940770314] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Kuehne ME, Bandarage UK, Hammach A, Li YL, Wang T. Application of Ferrocenylalkyl Chiral Auxiliaries to Syntheses of Indolenine Alkaloids: Enantioselective Syntheses of Vincadifformine, ψ- and 20-epi-ψ-Vincadifformines, Tabersonine, Ibophyllidine, and Mossambine. J Org Chem 1998. [DOI: 10.1021/jo971838g] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Din Belle D, Tolvanen A, Lounasmaa M. Total syntheses of tacamine-type indole alkaloids of Tabernaemontana eglandulosa. Tetrahedron 1996. [DOI: 10.1016/0040-4020(96)00663-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Lounasmaa M, Karinen K, Belle DD, Tolvanen A. Stereoselective synthesis of methyl 3α-ethyl-1,2,3,4,6,7,12,12bβ-octahydroindolo[2,3-a]quinolizine-1α-carboxylate: A key intermediate for the preparation of tacamine-type indole alkaloids. Tetrahedron Lett 1996. [DOI: 10.1016/0040-4039(96)00052-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Lounasmaa M, Din Belle D, Tolvanen A. Total synthesis of the indole alkaloid (±)-tacamine. Tetrahedron Lett 1994. [DOI: 10.1016/0040-4039(94)88102-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Chapter 1 Eburnamine—Vincamine Alkaloids. ACTA ACUST UNITED AC 1992. [DOI: 10.1016/s0099-9598(08)60059-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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Tamminen T, Jokela R, Tirkkonen B, Lounasmaa M. Indoloquinolizidine iminium species formed under the modified Polonovski reaction conditions. Tetrahedron 1989. [DOI: 10.1016/s0040-4020(01)80098-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Danieli B, Palmisano G. Chapter 1 Alkaloids from Tabernaemontana. ACTA ACUST UNITED AC 1986. [DOI: 10.1016/s0099-9598(08)60307-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
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Van Beek TA, Verpoorte R, Svendsen AB, Leeuwenberg AJ, Bisset NG. Tabernaemontana L. (Apocynaceae): a review of its taxonomy, phytochemistry, ethnobotany and pharmacology. JOURNAL OF ETHNOPHARMACOLOGY 1984; 10:1-156. [PMID: 6371388 DOI: 10.1016/0378-8741(84)90046-1] [Citation(s) in RCA: 131] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The taxonomy, phytochemistry, ethnobotany, and pharmacology of the genus Tabernaemontana L. (Apocynaceae) is reviewed. The genus is currently being revised taxonomically; most of the segregate genera are being reunited with it and the number of species that will ultimately be recognized will probably be about 100. All the names encountered in the chemical and ethnobotanical literature have been evaluated as far as possible, and a list is presented of the recognized species and their synonyms. The biogenesis and classification of the indole alkaloids found in Tabernaemontana species is set out and some problems in the determination of their stereochemistry are discussed. To facilitate access to the information, three lists have been compiled: the alkaloids in alphabetical order; the alkaloids in order of increasing molecular weight; and the alkaloids grouped according to their biogenetic classification, together with the species and plant part(s) in which they are known to occur. Biogenetic and chemotaxonomic aspects are briefly considered. A table of the non-alkaloidal constituents is also included. The ethnobotany of individual Tabernaemontana species is outlined and an overall assessment made. Likewise, information on the pharmacology of crude extracts and individual alkaloids from Tabernaemontana species has been assembled and appraised.
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