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Li W, Wu Z, Xia Y, Tan J, Zhao H, Chen S, Li Y, Tang H, Wang G, Zhang Y. Antiviral and Antioxidant Components from the Fruits of Illicium verum Hook.f. (Chinese Star Anise). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:3697-3707. [PMID: 35293738 DOI: 10.1021/acs.jafc.1c08376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Illicium verum Hook.f. (Chinese star anise), a known Chinese traditional spice, is commonly applied in Chinese cuisine and cooking in Southeast Asia. As a kind of medicinal and edible resource, the fruit of I. verum has attracted great attention for its chemical constituents and physiological activities. In this work, the phytochemical study of the fruits of I. verum led to the isolation and identification of 20 compounds, including 6 new lignans and phenylpropanoids (1-6) and 14 known ones (7-20). Their structures were characterized by extensive analysis of spectroscopic data (IR, UV, high-resolution electrospray ionization mass spectrometry (HR-ESI-MS), one-dimensional (1D) and two-dimensional (1D) NMR), electronic circular dichroism (ECD) calculation, and by comparison with literature data. Meanwhile, all compounds (1-20) were evaluated for their antiviral and antioxidant activities. Especially, compound 7 [(-)-bornyl p-coumarate] showed strong antiviral activities against influenza virus A/Puerto Rico/8/34 H1N1 (PR8) with an IC50 value of 1.74 ± 0.47 μM, which is much better than those of Tamiflu (IC50 = 10.01 ± 0.92 μM) and ribavirin (IC50 = 10.76 ± 1.60 μM). The antiviral activity against PR8 of compound 7 was reported for the first time, which was sufficiently confirmed by cell counting kit 8 (CCK-8), cytopathic effect (CPE) reduction, and immunofluorescence assays. In this study, the discovery of antiviral and antioxidant components from the fruits of I. verum could benefit the further development and utilization of this plant.
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Affiliation(s)
- Wen Li
- Department of Dermatology, Shunde Hospital, Southern Medical University (The First People's Hospital of Shunde), Foshan 528308, P. R. China
| | - Zhongnan Wu
- Institute of Traditional Chinese Medicine & Natural Products, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, P. R. China
- The First Affiliated Hospital, Jinan University, Guangzhou 510632, P. R. China
| | - Yiping Xia
- Institute of Traditional Chinese Medicine & Natural Products, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, P. R. China
| | - Jinlin Tan
- Institute of Traditional Chinese Medicine & Natural Products, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, P. R. China
| | - Haiyue Zhao
- Institute of Traditional Chinese Medicine & Natural Products, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, P. R. China
| | - Si Chen
- Institute of Traditional Chinese Medicine & Natural Products, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, P. R. China
| | - Yaolan Li
- Institute of Traditional Chinese Medicine & Natural Products, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, P. R. China
| | - Hongfeng Tang
- Department of Dermatology, Shunde Hospital, Southern Medical University (The First People's Hospital of Shunde), Foshan 528308, P. R. China
| | - Guocai Wang
- Institute of Traditional Chinese Medicine & Natural Products, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, P. R. China
| | - Yubo Zhang
- Institute of Traditional Chinese Medicine & Natural Products, Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou 510632, P. R. China
- Guangdong Clinical Translational Center for Targeted Drug, Department of Pharmacology, School of Medicine, Jinan University, Guangzhou 510632, P. R. China
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Singh B, Bankar SK, Ramasastry SSV. Pd-Catalyzed Nazarov-Type Cyclization: Application in the Total Synthesis of β-Diasarone and Other Complex Cyclopentanoids. Org Lett 2022; 24:1043-1048. [PMID: 35060746 DOI: 10.1021/acs.orglett.1c04243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We describe the palladium-catalyzed Nazarov-type cyclization of easily accessible (hetero)arylallyl acetates to pentannulated (hetero)arenes. This method provides ready access to various types of bi-, tri-, tetra-, and pentacyclic cyclopentanoids under neutral conditions. The synthetic utility is further demonstrated in the first total synthesis of β-diasarone and several other complex cyclopentanoids relevant to medicinal chemistry and materials science.
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Affiliation(s)
- Bara Singh
- Organic Synthesis and Catalysis Lab, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER)─Mohali, Sector 81, S A S Nagar, Manauli PO, Punjab 140306, India
| | - Siddheshwar K Bankar
- Organic Synthesis and Catalysis Lab, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER)─Mohali, Sector 81, S A S Nagar, Manauli PO, Punjab 140306, India
| | - S S V Ramasastry
- Organic Synthesis and Catalysis Lab, Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER)─Mohali, Sector 81, S A S Nagar, Manauli PO, Punjab 140306, India
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Arredondo V, Roa DE, Gutman ES, Huynh NO, Van Vranken DL. Total Synthesis of (±)-Brazilin Using [4 + 1] Palladium-Catalyzed Carbenylative Annulation. J Org Chem 2019; 84:14745-14759. [DOI: 10.1021/acs.joc.9b02343] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Vanessa Arredondo
- Department of Chemistry, University of California, Irvine, 1102 Natural Sciences II, Irvine, California 92697, United States
| | - Daniel E. Roa
- Department of Chemistry, University of California, Irvine, 1102 Natural Sciences II, Irvine, California 92697, United States
| | - Eugene S. Gutman
- Department of Chemistry, University of California, Irvine, 1102 Natural Sciences II, Irvine, California 92697, United States
| | - Nancy O. Huynh
- Department of Chemistry, University of California, Irvine, 1102 Natural Sciences II, Irvine, California 92697, United States
| | - David L. Van Vranken
- Department of Chemistry, University of California, Irvine, 1102 Natural Sciences II, Irvine, California 92697, United States
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Mateos J, Meneghini N, Bonchio M, Marino N, Carofiglio T, Companyó X, Dell'Amico L. Microfluidic light-driven synthesis of tetracyclic molecular architectures. Beilstein J Org Chem 2018; 14:2418-2424. [PMID: 30344766 PMCID: PMC6176812 DOI: 10.3762/bjoc.14.219] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 08/31/2018] [Indexed: 12/04/2022] Open
Abstract
Herein we report an effective synthetic method for the direct assembly of highly functionalized tetracyclic pharmacophoric cores. Coumarins and chromones undergo diastereoselective [4 + 2] cycloaddition reactions with light-generated photoenol intermediates. The reactions occur by aid of a microfluidic photoreactor (MFP) in high yield (up to >98%) and virtually complete diastereocontrol (>20:1 dr). The method is easily scaled-up to a parallel setup, furnishing 948 mg of product over a 14 h reaction time. Finally, a series of manipulations of the tetracyclic scaffold obtained gave access to valuable precursors of biologically active molecules.
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Affiliation(s)
- Javier Mateos
- Dipartimento di Scienze Chimiche and ITM-CNR UoS of Padova, Università di Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Nicholas Meneghini
- Dipartimento di Scienze Chimiche and ITM-CNR UoS of Padova, Università di Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Marcella Bonchio
- Dipartimento di Scienze Chimiche and ITM-CNR UoS of Padova, Università di Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Nadia Marino
- Dipartimento di Scienze Chimiche and ITM-CNR UoS of Padova, Università di Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Tommaso Carofiglio
- Dipartimento di Scienze Chimiche and ITM-CNR UoS of Padova, Università di Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Xavier Companyó
- Dipartimento di Scienze Chimiche and ITM-CNR UoS of Padova, Università di Padova, Via Marzolo 1, 35131 Padova, Italy
| | - Luca Dell'Amico
- Dipartimento di Scienze Chimiche and ITM-CNR UoS of Padova, Università di Padova, Via Marzolo 1, 35131 Padova, Italy
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