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Wang DD, Zhang R, Tang LY, Long GQ, Yan H, Yang YC, Guo ZF, Zheng YY, Wang Y, Jia JM, Wang AH. (±)-Salvicatone A: A Pair of C 27-Meroterpenoid Enantiomers with Skeletons from the Roots and Rhizomes of Salvia castanea Diels f. tomentosa Stib. J Org Chem 2023. [PMID: 37976373 DOI: 10.1021/acs.joc.3c01664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
(±)-Salvicatone A (1), a C27-meroterpenoid featuring a unique 6/6/6/6/6-pentacyclic carbon skeleton with a 7,8,8a,9,10,10a-hexahydropyren-1 (6H)-one motif, was isolated from the roots and rhizomes of Salvia castanea Diels f. tomentosa Stib. Its structure was characterized by comprehensive spectroscopic analyses along with computer-assisted structure elucidation, including ACD/structure elucidator and quantum chemical calculations with 1H/13C NMR and electronic circular dichroism. Biogenetically, compound 1 was constructed from decarboxylation following [4 + 2] Diels-Alder cycloaddition reaction between caffeic acid and miltirone analogue. Bioassays showed that (-)-1 and (+)-1 inhibited nitric oxide production in lipopolysaccharide-induced RAW264.7 macrophage cells with an IC50 value of 6.48 ± 1.25 and 15.76 ± 5.55 μM, respectively. The structure-based virtual screening based on the pharmacophores in ePharmaLib, as well as the molecular docking and molecular dynamics simulations study, implied that (-)-1 and (+)-1 may potentially bind to retinoic acid receptor-related orphan receptor C to exert anti-inflammatory activities.
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Affiliation(s)
- Dong-Dong Wang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
| | - Rui Zhang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
| | - Lian-Yu Tang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
| | - Guo-Qing Long
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
| | - Hui Yan
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
| | - Yong-Cheng Yang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
| | - Zi-Feng Guo
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
| | - Ying-Ying Zheng
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
| | - Yong Wang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
| | - Jing-Ming Jia
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
| | - An-Hua Wang
- School of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang 110016, People's Republic of China
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Ren YJ, Cao YG, Zeng MN, Zhang QQ, Liu YL, He C, Chen X, Fan XL, Li XD, Zheng XK, Feng WS. Salviamilthone A-O, diterpenoid quinones from Salvia miltiorrhiza. PHYTOCHEMISTRY 2023; 215:113840. [PMID: 37648044 DOI: 10.1016/j.phytochem.2023.113840] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 08/26/2023] [Accepted: 08/27/2023] [Indexed: 09/01/2023]
Abstract
Fifteen undescribed diterpenoid quinones salviamilthone A-O (1-15), together with three known diterpenoid quinones (16-18), were isolated from the roots of Salvia miltiorrhiza Bunge. Their structures were elucidated using 1D and 2D NMR data, while the relative and absolute configurations were confirmed by NOESY correlations and comparison between experimental and calculated ECD spectra. In the evaluation of bioactivities, salviamilthone J (10), salviamone (18) (10 μM) significantly increased cell viability and decreased the expression of IL-1β in lipopolysaccharide-induced BEAS-2B cells. These data provide the molecular justification for the usage of Salvia miltiorrhiza in treating acute lung injury.
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Affiliation(s)
- Ying-Jie Ren
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China; Co-construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases By Henan & Education Ministry of PR China, PR China; Henan Provincial Key Laboratory for Clinical Pharmacy of Traditional Chinese Medicine, The First Affiliated Hospital of Henan University of Chinese Medicine, Zhengzhou 450003, PR China
| | - Yan-Gang Cao
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China; Co-construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases By Henan & Education Ministry of PR China, PR China
| | - Meng-Nan Zeng
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China; Co-construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases By Henan & Education Ministry of PR China, PR China
| | - Qin-Qin Zhang
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China; Co-construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases By Henan & Education Ministry of PR China, PR China
| | - Yan-Ling Liu
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China; Co-construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases By Henan & Education Ministry of PR China, PR China
| | - Chen He
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China; Co-construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases By Henan & Education Ministry of PR China, PR China
| | - Xu Chen
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China; Co-construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases By Henan & Education Ministry of PR China, PR China
| | - Xi-Ling Fan
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China; Co-construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases By Henan & Education Ministry of PR China, PR China
| | - Xiang-Da Li
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China; Co-construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases By Henan & Education Ministry of PR China, PR China
| | - Xiao-Ke Zheng
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China; Co-construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases By Henan & Education Ministry of PR China, PR China.
| | - Wei-Sheng Feng
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China; Co-construction Collaborative Innovation Center for Chinese Medicine and Respiratory Diseases By Henan & Education Ministry of PR China, PR China.
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Xia F, Lin LS, Ye YS, Yang L, Zhao JH, Xu G. 11,12-seco-Abietane-type diterpene lactones with potential antiplatelet activity from Salvia prattii. Bioorg Chem 2023; 140:106834. [PMID: 37677855 DOI: 10.1016/j.bioorg.2023.106834] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Revised: 08/22/2023] [Accepted: 08/31/2023] [Indexed: 09/09/2023]
Abstract
Eleven new abietane-type diterpene lactones, salpratlactones D-N (1-11), including five 11,12-seco-11-nor-abietane diterpenes (1-5), four 11,12-seco-abietane diterpenes (6-9), two 20(10 → 5)-abeo-4,5;11,12-bis-seco-abietane diterpenes (10-11), and two known analogues (12-13), were characterized from Salvia prattii. Notably, compounds 1-3 were characterized by a unique linear 6/6/6 tricyclic skeleton. The structures were established by spectroscopic data interpretation, calculated NMR-DP4+ and electronic circular dichroism analysis, as well as single-crystal X-ray diffraction. A bioactivity study showed that 1, 2, 5, 11, and 12 can potently inhibit platelet aggregation induced by arachidonic acid (AA), with IC50 values of 5.66-16.10 μg/ml, stronger than aspirin. In addition, the lactate dehydrogenase assay showed that they had no effect on platelet integrity. Structurally, the same 1,2-benzopyrone fragments of 1, 2, and 5 should be the important pharmacophore for antiplatelet activity.
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Affiliation(s)
- Fan Xia
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, People's Republic of China
| | - Li-Sha Lin
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, People's Republic of China
| | - Yan-Song Ye
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, People's Republic of China
| | - Lian Yang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, People's Republic of China
| | - Jin-Hua Zhao
- School of Pharmaceutical Sciences, South-Central University for Nationalities, Wuhan 430000, Hubei, People's Republic of China.
| | - Gang Xu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, People's Republic of China.
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4
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Jiang JS, Gu QC, Feng ZM, Yuan X, Zhang X, Zhang PC, Yang YN. The tanshinones from the plant of Salvia miltiorrhiza. PHYTOCHEMISTRY 2023; 210:113673. [PMID: 37030588 DOI: 10.1016/j.phytochem.2023.113673] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 04/04/2023] [Accepted: 04/04/2023] [Indexed: 06/19/2023]
Abstract
Six undescribed tanshinones, (+)-2-Cl-tanshindiol C (1), (-)-2-Cl-tanshindiol C (2), (+)-tanshinoic acid D (3), (-)-tanshinoic acid D (4), (-)-tanshinoic acid E (5), and (+)-tanshinoic acid E (6), were isolated from the rhizome of Salvia miltiorrhiza Bunge. Their structures were elucidated based on the spectroscopic data (UV, IR, HR-ESI-MS, and NMR). The bioactive assays of all these compounds for the antioxidant activities in cardiomyocytes upon hypoxia stimulation were evaluated. The results suggested that compounds 5 and 6 exhibited good antioxidant activities in cardiomyocytes and the cell survival rates were 46.3% and 57.9% (10-5 mol/L), respectively.
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Affiliation(s)
- Jian-Shuang Jiang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100050, China.
| | - Quan-Chang Gu
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100050, China
| | - Zi-Ming Feng
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100050, China
| | - Xiang Yuan
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100050, China
| | - Xu Zhang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100050, China
| | - Pei-Cheng Zhang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100050, China.
| | - Ya-Nan Yang
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100050, China.
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5
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An Q, Wu M, Yang C, Feng Y, Xu X, Su H, Zhang G. Salviae miltiorrhiza against human lung cancer: A review of its mechanism (Review). Exp Ther Med 2023; 25:139. [PMID: 36845955 PMCID: PMC9947574 DOI: 10.3892/etm.2023.11838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 01/10/2023] [Indexed: 02/15/2023] Open
Abstract
Lung cancer is one of the commonest malignant tumors in the world today, causing millions of mortalities every year. New methods to treat lung cancer are urgently needed. Salviae miltiorrhiza Bunge is a common Chinese medicine, often used for promoting blood circulation. In the past 20 years, Salviae miltiorrhiza has made significant progress in the treatment of lung cancer and is considered to be one of the most promising methods to fight against the disease. A great amount of research has shown that the mechanism of Salviae miltiorrhiza against human lung cancer mainly includes inhibiting the proliferation of lung cancer cells, promoting lung cancer cell apoptosis, inducing cell autophagy, regulating immunity and resisting angiogenesis. Research has shown that Salviae miltiorrhiza has certain effects on the resistance to chemotherapy drugs. The present review discussed the status and prospects of Salviae miltiorrhiza against human lung cancer.
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Affiliation(s)
- Qingwen An
- School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, P.R. China,Key Laboratory of Blood-Stasis-Toxin Syndrome of Zhejiang Province, Hangzhou, Zhejiang 310053, P.R. China
| | - Mengting Wu
- School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, P.R. China,Key Laboratory of Blood-Stasis-Toxin Syndrome of Zhejiang Province, Hangzhou, Zhejiang 310053, P.R. China
| | - Chuqi Yang
- School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, P.R. China,Key Laboratory of Blood-Stasis-Toxin Syndrome of Zhejiang Province, Hangzhou, Zhejiang 310053, P.R. China
| | - Yewen Feng
- School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, P.R. China,Key Laboratory of Blood-Stasis-Toxin Syndrome of Zhejiang Province, Hangzhou, Zhejiang 310053, P.R. China
| | - Xuefei Xu
- School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, P.R. China,Key Laboratory of Blood-Stasis-Toxin Syndrome of Zhejiang Province, Hangzhou, Zhejiang 310053, P.R. China
| | - Hang Su
- School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, P.R. China,Key Laboratory of Blood-Stasis-Toxin Syndrome of Zhejiang Province, Hangzhou, Zhejiang 310053, P.R. China
| | - Guangji Zhang
- School of Basic Medical Sciences, Zhejiang Chinese Medical University, Hangzhou, Zhejiang 310053, P.R. China,Key Laboratory of Blood-Stasis-Toxin Syndrome of Zhejiang Province, Hangzhou, Zhejiang 310053, P.R. China,Traditional Chinese Medicine ‘Preventing Disease’ Wisdom Health Project Research Center of Zhejiang, Hangzhou, Zhejiang 310053, P.R. China,Correspondence to: Professor Guangji Zhang, School of Basic Medical Sciences, Zhejiang Chinese Medical University, 526 Binwen Road, Hangzhou, Zhejiang 310053, P.R. China
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6
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Yu Y, Shi M, Zhu S, Cao J. The two‐phase amphiphilic preconcentration based on surfactants to enrich phenolic compounds from diluted plant extracts and rat urine by micellar electrokinetic chromatography. Electrophoresis 2022; 43:1735-1745. [DOI: 10.1002/elps.202200044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 05/18/2022] [Accepted: 06/21/2022] [Indexed: 11/11/2022]
Affiliation(s)
- Ya‐Ling Yu
- College of Material Chemistry and Chemical Engineering Hangzhou Normal University Hangzhou P. R. China
| | - Min‐Zhen Shi
- College of Material Chemistry and Chemical Engineering Hangzhou Normal University Hangzhou P. R. China
| | - Si‐Chen Zhu
- College of Material Chemistry and Chemical Engineering Hangzhou Normal University Hangzhou P. R. China
| | - Jun Cao
- College of Material Chemistry and Chemical Engineering Hangzhou Normal University Hangzhou P. R. China
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Ren YJ, Cao YG, Zeng MN, Zhang QQ, Liu YL, He C, Chen X, Fan XL, Li XD, Zheng XK, Feng WS. Ten undescribed diterpenoid quinones derived from the Salvia miltiorrhiza. PHYTOCHEMISTRY 2022; 200:113224. [PMID: 35588867 DOI: 10.1016/j.phytochem.2022.113224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Revised: 04/03/2022] [Accepted: 04/30/2022] [Indexed: 06/15/2023]
Abstract
This study aimed to report the structure elucidation of the compounds isolated from Salvia miltiorrhiza, and their biological evaluations. Ten undescribed diterpenoid quinones and 10 known analogues were isolated from the dried roots of S. miltiorrhiza. Their structures were elucidated by extensive analysis, including nuclear magnetic resonance, high-resolution mass spectra, and ultraviolet and infrared spectra. Their absolute configurations were determined by comparing the experimental and calculated electronic circular dichroism spectra. In the evaluation of bioactivities, Salvianolactone acid I, epi-danshenspiroketallactone F, danshinspiroketallactone, grandifolia G, and 2H-Naphtho [1,8-bc]furan (10 μM) significantly increased cell viability and decreased the nuclear transport of p-P65 in lipopolysaccharide-induced bronchial epithelial cells. It was concluded that the diterpenoid quinones might belong to potent targeted lung-protective agents.
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Affiliation(s)
- Ying-Jie Ren
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China; The Engineering and Technology Center for Chinese Medicine Development of Henan Province, Zhengzhou, 450046, PR China
| | - Yan-Gang Cao
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China; The Engineering and Technology Center for Chinese Medicine Development of Henan Province, Zhengzhou, 450046, PR China
| | - Meng-Nan Zeng
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China; The Engineering and Technology Center for Chinese Medicine Development of Henan Province, Zhengzhou, 450046, PR China
| | - Qin-Qin Zhang
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China; The Engineering and Technology Center for Chinese Medicine Development of Henan Province, Zhengzhou, 450046, PR China
| | - Yan-Ling Liu
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China; The Engineering and Technology Center for Chinese Medicine Development of Henan Province, Zhengzhou, 450046, PR China
| | - Chen He
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China; The Engineering and Technology Center for Chinese Medicine Development of Henan Province, Zhengzhou, 450046, PR China
| | - Xu Chen
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China; The Engineering and Technology Center for Chinese Medicine Development of Henan Province, Zhengzhou, 450046, PR China
| | - Xi-Ling Fan
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China; The Engineering and Technology Center for Chinese Medicine Development of Henan Province, Zhengzhou, 450046, PR China
| | - Xiang-Da Li
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China; The Engineering and Technology Center for Chinese Medicine Development of Henan Province, Zhengzhou, 450046, PR China
| | - Xiao-Ke Zheng
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China; The Engineering and Technology Center for Chinese Medicine Development of Henan Province, Zhengzhou, 450046, PR China.
| | - Wei-Sheng Feng
- School of Pharmacy, Henan University of Chinese Medicine, Zhengzhou, 450046, PR China; The Engineering and Technology Center for Chinese Medicine Development of Henan Province, Zhengzhou, 450046, PR China.
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Huo M, Peng S, Li J, Cao Y, Chen Z, Zhang Y, Qiao Y. Comparison of the clinical effect features of Han-Ku-Gan and Wen-Xin-Gan based on the efficacy of promoting blood circulation and removing blood stasis. JOURNAL OF TRADITIONAL CHINESE MEDICAL SCIENCES 2022. [DOI: 10.1016/j.jtcms.2022.05.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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9
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Su X, Wu Y, Wu M, Lu J, Jia S, He X, Liu S, Zhou Y, Xing H, Xue Y. Regioisomers Salviprolin A and B, Unprecedented Rosmarinic Acid Conjugated Dinorditerpenoids from Salvia przewalskii Maxim. Molecules 2021; 26:6955. [PMID: 34834049 PMCID: PMC8618536 DOI: 10.3390/molecules26226955] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 11/07/2021] [Accepted: 11/11/2021] [Indexed: 11/16/2022] Open
Abstract
Salvia przewalskii Maxim is a perennial plant from the genus Salvia (family Lamiaceae). The roots of S. przewalskii were long used as a traditional herb to treat blood circulation related illnesses in China. As part of our continuing interest in polycyclic natural products from medicinal plants, two unprecedented adducts comprised of a dinor-diterpenoid and a 9'-nor-rosmarinic acid derivative, linked by a 1,4-benzodioxane motif (1 and 2), were isolated from the roots of S. przewalskii. Their structures were established by extensive spectroscopic approaches including 1D, 2D NMR, and HRFABMS. Their cytotoxic activities against five human tumor cell lines were evaluated.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Yongbo Xue
- School of Pharmaceutical Sciences (Shenzhen), Sun Yat-sen University, Shenzhen 518107, China; (X.S.); (Y.W.); (M.W.); (J.L.); (S.J.); (X.H.); (S.L.); (Y.Z.); (H.X.)
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